Merge branch 'feature/material-bulk-import' into dev

模板里填单位名称（如「千克」）时原本把名称原样存进 materials.unit，而单条新增
经 syncUnit 提交的是单位编码 kg。同一个单位按录入路径留下两种写法，库存页直接
显示该字段（Stock.vue 的 unit 列）会出现「千克」与「kg」并存。

- material_import.go：Unit 一律取匹配到的单位 Code
- 补回归用例：模板填名称、填编码两条路径都断言落库为 kg
- 同步计划文档的代码与测试片段、设计约定 4 的单位一行
- 订正 api.md 中 unit 字段「单位名称」的错误描述（单条新增提交的本就是编码）

docs/api.md

@@ -127,7 +127,7 @@
 
 ### 本文档覆盖范围
 
-本文档详述**物料、入库、出库、库存**四个资源域。以下分组已实现但未在本文档展开，需要时请直接查阅 `internal/handler/api.go` 的路由注册：
+本文档详述**物料、入库、出库、库存**四个资源域，物料批量导入（`/material-import`）已并入 §1。以下分组已实现但未在本文档展开，需要时请直接查阅 `internal/handler/api.go` 的路由注册：
 
 | 分组                    | 路径                                        | 权限   |
 |-------------------------|---------------------------------------------|--------|
@@ -143,6 +143,7 @@
 | 物料申请                | `/applications`、`/applications/my`         | 需登录 |
 | 操作日志                | `/logs`、`/logs/materials/:materialId`      | 需登录 |
 | 图片上传                | `POST /upload`                              | 需登录 |
+| 物料批量导入            | `GET /material-import/template`、`POST /material-import` | 需登录，见 §1 |
 
 ---
 
@@ -254,7 +255,7 @@
 | spec              | string  | 否   | 规格                                 |
 | manufacturer_model| string  | 否   | 厂家型号                             |
 | base_unit_id      | integer | 否   | 基本计量单位 ID                      |
-| unit              | string  | 否   | 单位名称（冗余展示字段）             |
+| unit              | string  | 否   | 单位编码（冗余展示字段）             |
 | material_image    | string  | 否   | 图片地址                             |
 | organization_id   | integer | 否   | 传入会被忽略，服务端取当前用户的组织 |
 
@@ -305,7 +306,7 @@
 | spec              | string  | 否   | 规格                     |
 | manufacturer_model| string  | 否   | 厂家型号                 |
 | base_unit_id      | integer | 否   | 基本计量单位 ID          |
-| unit              | string  | 否   | 单位名称                 |
+| unit              | string  | 否   | 单位编码                 |
 | material_image    | string  | 否   | 图片地址                 |
 | status            | string  | 否   | 物料状态                 |
 
@@ -388,6 +389,93 @@
 
 ---
 
+### GET /material-import/template
+
+下载批量导入用的 xlsx 模板。模板随代码实时生成、不落盘，所以下载到的列定义永远与当前校验规则一致。
+
+**请求：** 无参数。
+
+**响应：** xlsx 文件流，`Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet`，文件名为 `物料导入模板.xlsx`。
+
+模板含两张工作表，按以下顺序排列，打开时默认显示「填写说明」：
+
+| 工作表 | 内容 |
+|--------|------|
+| 填写说明 | 字段规则、填写与上传步骤、容量限制、整批校验、重复导入提醒和参考示例 |
+| 物料数据 | 第 1 行是冻结表头，从第 2 行填写；五列采用文本格式，数据页不放示例物料 |
+
+`物料数据` 的表头是 5 列：`物料名称`、`规格`、`单位`、`大类`、`小类`。解析时**按列名定位，不按列位置**：
+
+- 列顺序可以随意调整；表头允许带首尾空格和末尾的 `*` 必填标记；不认识的列忽略；
+- 必填列 `物料名称`、`大类`、`小类` 缺任何一列，判为模板不合法并返回「模板格式不正确，请重新下载最新模板」；
+- 选填列 `规格`、`单位` 可以整列删掉，取值按空处理。
+
+分类**按名称**填写；名称之外也接受**编码**和界面上的「编码 名称」写法（界面一律显示成 `A 机械结构类`，用户整段照抄进模板是常事）。后端按「大类 + 小类」在本公司内组合匹配（小类名在一个公司内会重名，例如多个大类下都有「其他」，所以必须两级组合）。名称、编码、「编码 名称」三种写法同名或同码时以**名称**优先。单位按名称匹配，同时兼容按编码匹配（如 `kg` 与 `千克`）。
+
+### POST /material-import
+
+上传填好的 xlsx，**校验通过即在同一个请求内入库**——没有「预览确认」环节，也没有暂存任务 ID。
+
+**请求：** `multipart/form-data`，文件字段名 `file`。仅支持 `.xlsx`，单文件不超过 1 MB，数据区不超过 10,000 行（不含表头）。
+
+服务端在 multipart 解析前限制请求体为 1 MiB + 64 KiB（表单开销），文件本身仍限制为 1 MiB；超大请求在读到上限时提前拒绝。Excel 使用逐行迭代读取，发现第 10,001 条非空数据时立即停止，表头和空行不计数；较大的工作表 XML 使用临时文件，避免将整张表的所有行缓存到内存。
+
+**逐行校验规则：**
+
+| 列 | 规则 |
+|----|------|
+| 物料名称 | 必填，去首尾空格后非空，≤ 200 字 |
+| 规格 | 选填，≤ 200 字 |
+| 单位 | 选填；留空时默认「个」。非空时必须在当前公司已启用单位中按名称或编码匹配到 |
+| 大类 | 必填，必须是当前公司已启用的顶层分类，按名称、编码或「编码 名称」匹配 |
+| 小类 | 必填，必须是该大类下已启用的小类，同样认名称、编码或「编码 名称」 |
+| 编码规则 | 该小类必须存在启用的编码规则（`code_rules.status = 'active'`） |
+
+物料编码由系统按小类编码规则生成，**不接受模板里的编码列**。单位落库统一写该单位的**编码**——模板里填名称（如「千克」）时也会转成编码，与单条新增保持一致。同一行可能产生多条原因，用中文分号连接。
+
+**成功响应 `201 Created`：**
+
+```json
+{
+  "code": 0,
+  "message": "成功导入 200 条物料",
+  "data": { "total_rows": 200, "success_rows": 200, "failed_rows": 0, "errors": [] }
+}
+```
+
+**校验失败响应 `400 Bad Request`**（HTTP 状态是 400，但 `data` 里带完整明细）：
+
+```json
+{
+  "code": 400,
+  "message": "有 3 行校验未通过，本次未导入任何数据",
+  "data": {
+    "total_rows": 200, "success_rows": 0, "failed_rows": 3,
+    "errors": [
+      { "row": 3, "data": { "name": "", "spec": "M8x30", "unit": "个", "major": "机械结构类", "minor": "标准件" }, "reason": "物料名称不能为空" }
+    ]
+  }
+}
+```
+
+`row` 是 **Excel 里的真实行号**（从 1 开始、含表头行），用户可以直接对着 Excel 定位；`data` 是该行的原始内容。
+
+**状态码：**
+
+- `201 Created` — 全部行通过并入库
+- `400 Bad Request` — 存在校验未通过的行（整批不入库）；模板不合法（「模板格式不正确，请重新下载最新模板」）、行数超限（「导入行数超过 10000 行上限」）、未选文件（「请选择要导入的 xlsx 文件」）、文件超过 1 MB（「文件超过 1MB 上限」）
+- `500 Internal Server Error` — 入库失败，事务已回滚，整批未落库
+
+**行为说明：**
+
+- **任意一行校验失败，整批不入库**，响应中返回全部逐行错误；重新上传前请先修正后重试。
+- 整批在**一个事务**内完成：按小类锁编码规则 → 分配编码 → 分批插入物料（每批 500 行）→ 写审计日志；任一步失败整体回滚。
+- **仅记录成功导入**：事务提交后写一条 `material_import_logs` 成功汇总，包含操作人、公司、时间、文件名、总行数和成功数，失败数为 0、状态为 `success`、失败原因为空；失败导入不保存历史记录。**逐行错误明细只随响应返回，不落库。** 成功新增的每件物料仍写 CREATE 日志及完整 `new_value` JSON 快照；现有日志页「查看详情」显示「批量导入创建：物料名称（物料编码）」，下方按行展示导入时的编码、名称、规格、分类、单位和状态；该详情是物料操作日志，不展示导入文件名或批次汇总。
+- 首版只支持**新增**物料：不做更新，也不自动创建分类或单位。
+- **不做重复检测**：同一份文件重复上传会真的导入两遍（生成不同的编码）。
+
+---
+
 ## 2. 入库接口
 
 入库是物料**进入库存视野**的唯一入口：物料的第一行库存记录和第一个预警阈值都在这里产生。入库成功后，服务端会通过 WebSocket 广播库存变更。

docs/回归测试用例.md

@@ -1,8 +1,8 @@
 # 物料管理系统回归测试用例
 
-更新时间：2026-10-09
+更新时间：2026-10-12
 
-本文用于版本发布前的人工回归检查。用例依据当前仓库已实现的入库、出库、库存、物料申请审批、物料主数据和组织隔离功能编写；权限功能暂不纳入本轮回归。测试时请使用隔离的测试环境和测试账号；涉及库存变更的用例应使用专用测试物料，执行前记录库存基线。
+本文用于版本发布前的人工回归检查。用例依据当前仓库已实现的入库、出库、库存、物料申请审批、物料主数据、物料批量导入和组织隔离功能编写；权限功能暂不纳入本轮回归。测试时请使用隔离的测试环境和测试账号；涉及库存变更的用例应使用专用测试物料，执行前记录库存基线。
 
 ## 通用测试准备
 
@@ -192,11 +192,11 @@
 
 **测试内容：** 验证物料分类、计量单位和编码规则能够配置，并被新增物料流程正确使用。
 
-**前置数据：** 使用可维护物料主数据的测试账号；准备尚未使用的分类编码、单位编码和编码前缀。
+**前置数据：** 使用可维护物料主数据的测试账号；准备尚未使用的大类和小类编码、单位编码。
 
-**操作步骤：** 在「物料主数据 → 基础配置」依次新增一个大类、其下的小类、一个计量单位，并为小类配置启用的编码规则（例如前缀 `RT`、流水号 4 位、下一流水号 1）；进入「物料」新增物料，选择该大类、小类和单位，保存后再次新增一件同分类物料。
+**操作步骤：** 在「物料主数据 → 基础配置」依次新增一个大类、其下的小类、一个计量单位，并为小类配置启用的编码规则（前缀按约定取该小类编码，如小类编码为 `A01` 时前缀填 `A01`；流水号 4 位、下一流水号 1）；进入「物料」新增物料，选择该大类、小类和单位，保存后再次新增一件同分类物料。
 
-**判断指标：** 配置项保存并在列表显示正确；新增物料可选到对应分类和单位；系统按规则生成编码（例如 `RT0001`、`RT0002`），编码不重复，物料详情显示所选分类和单位。
+**判断指标：** 配置项保存并在列表显示正确；新增物料可选到对应分类和单位；系统按规则生成编码，为小类编码加 4 位流水号（如小类 `A01` 时为 `A010001`、`A010002`），编码不重复，物料详情显示所选分类和单位。
 
 ### TC-19 供应商和客户资料维护
 
@@ -208,10 +208,84 @@
 
 **判断指标：** 两类资料均保存成功且字段显示正确；供应商分类筛选结果匹配；编辑后联系人信息更新；供应商资料显示在供应商页面，客户资料显示在客户页面，页面间无错误混列。
 
+## 物料批量导入专项回归（TC-20到TC-27）
+
+### 测试准备
+
+- 使用测试环境和可操作物料的账号，准备可切换的组织 A、B。
+- 在组织 A 准备启用的大类、小类、单位「个」及编码为 `kg` 的单位，为小类配置启用的编码规则；另准备停用分类、停用单位和未配置规则的小类。
+- 每个文件使用独立的测试物料名称，执行前记录物料列表和规则下一流水号。以下操作均通过页面和 Excel 手动完成，结果填写下方记录表。
+
+### TC-20 下载导入模板
+
+**测试内容：** 验证模板下载和填写说明。
+
+**操作步骤：** 进入「物料」页面，点击「下载模板」，用 Excel 打开下载文件，查看工作表、表头和填写说明。
+
+**判断指标：** 文件可正常打开，第一个工作表为「填写说明」且默认打开，第二个为「物料数据」。说明页包含字段规则、操作步骤、容量限制、整批失败和重复导入提醒及参考示例；数据页保持空白，第 1 行表头为「物料名称、规格、单位、大类、小类」，从第 2 行填写，滚动时表头保持可见。名称、大类、小类必填，规格和单位选填；单位留空默认「个」，物料编码由系统生成；五列按文本格式填写，前导零不会因数字格式被去掉。
+
+### TC-21 合法数据导入及编码生成
+
+**测试内容：** 验证物料新增、列表刷新及编码连续性。
+
+**前置数据：** 专用小类编码规则前缀按约定取该小类编码（含大类字母，如大类 `A` 下的小类 `A01`），流水号 4 位、下一流水号为 1，且无已占用编码。
+
+**操作步骤：** 在模板中填写两行不同名称的合法物料，保存后点击「批量导入」上传；查看提示、物料列表、详情和物料日志。刷新页面，再手动新增一件同小类物料，确认新编码与导入结果接续。
+
+**判断指标：** 提示成功导入 2 条，列表刷新，名称、规格、分类和单位正确；两条编码均按该小类规则生成，由小类编码加 4 位补零流水号组成（如小类 `A01` 时为 `A010001`、`A010002`），日志详情首行为「批量导入创建：物料名称（物料编码）」，下方按行显示导入时的物料编码、名称、规格、分类、单位和状态，同时保存新增内容快照及正确操作人；后续修改物料不应改变这条历史日志；随后单条新增编码为同小类编码加 `0003`（如 `A010003`），与导入的两条连续。导入结果刷新后仍可查询。
+
+### TC-22 分类写法与选填字段兼容
+
+**测试内容：** 验证分类、单位的不同填写方式及空行处理。
+
+**操作步骤：** 分别使用分类名称、分类编码和页面显示的「编码 名称」填写大类、小类，给分类文本加首尾空格；单位分别填名称、编码 `kg` 或留空，规格留空。在文件中插入全空行；另存一份删除规格和单位列、调整剩余列顺序的文件，分别上传。
+
+**判断指标：** 合法写法均能导入并匹配正确分类和单位；规格可为空，单位留空或删列时默认「个」；列顺序变化不导致字段错位，全空行不计入导入数量。
+
+### TC-23 错误数据校验与整批拒绝
+
+**测试内容：** 验证字段错误提示以及合法行不会被部分导入。
+
+**操作步骤：** 准备一份含合法行和错误行的文件，错误分别为名称/大类/小类为空、分类或单位不存在/停用、小类不属于所填大类、小类未配置启用规则、名称或规格超过 200 字。插入一个全空行后上传，检查错误明细，并按名称查询本次所有物料；对照编码规则的下一流水号。将超长字段改为 200 字且修正其余错误后重传。
+
+**判断指标：** 首次提示整批未导入，错误原因可定位，行号与 Excel 实际行号一致，空行不会压缩行号；一行多个错误只计一条错误行，合法行也不新增。编码规则的下一流水号不变；全部修正后可成功导入，200 字的名称和规格可接受。
+
+### TC-24 错误分页、导出与修正重传
+
+**测试内容：** 验证错误明细查看、保存和再次上传。
+
+**操作步骤：** 上传含 21 条错误行的文件，其中字段包含中文、逗号或双引号；切换错误表第二页，点击「导出错误明细」，用 Excel 打开 CSV。关闭弹窗，在原 `.xlsx` 中修正全部错误，再选择同一个文件上传。
+
+**判断指标：** 第一页显示 20 条、第二页 1 条；CSV 包含全部 21 条错误及行号、原始字段、失败原因，中文无乱码、字段不串列。关闭后无旧错误残留，同一文件能重新选择并提交，修正后成功导入 21 条。
+
+### TC-25 文件格式、模板及容量限制
+
+**测试内容：** 验证无效文件拦截和大小、行数限制。
+
+**操作步骤：** 分别尝试上传 `.xls`、`.csv`、超过 1 MiB（1024×1024 字节）的文件、损坏的 `.xlsx`、缺少「物料数据」工作表或必填表头的文件，并尝试取消文件选择。再分别上传 10000 行和 10001 行合法非空数据的 `.xlsx`，两份文件均不超过 1 MiB，记录耗时和结果。
+
+**判断指标：** 不支持的格式、超限大小和错误模板不能新增物料，并有可理解的提示；取消选择无新增。10000 行在允许范围内，应完整导入；10001 行被整批拒绝，表头和空行不计入数量。若出现超时，记录实际提示并刷新查询是否已导入，确认结果后再决定是否重传，避免重复新增。
+
+### TC-26 重复数据与重复上传
+
+**测试内容：** 验证当前重复导入的实际行为。
+
+**操作步骤：** 在同一文件中填写两条同名同规格的合法物料并上传；完成后再次选择同一个文件上传，查询物料及编码。
+
+**判断指标：** 按当前功能，两次均成功，每次新增两条，合计四条独立物料，编码互不重复；原有物料未被覆盖。当前不做重复检测，重复上传会再次新增。
+
+### TC-27 组织隔离与导入期间操作限制
+
+**测试内容：** 验证主数据归属和导入期间的操作限制。
+
+**操作步骤：** 在组织 A 上传使用 B 专属分类或单位的文件；随后在 A 上传较多行的合法文件，在导入请求尚未完成时尝试切换组织及再次点击「批量导入」。完成后切到 B 查询本次测试物料，再切回 A 查询。
+
+**判断指标：** B 专属分类或单位在 A 被判不存在，整批拒绝；请求进行中组织切换被阻止，再次点击不发起重复导入。完成后可正常切换；新物料仅在 A 可查，B 的物料和编码规则不受影响，切回 A 后结果正确。
+
 ## 执行结果记录
 
 | 用例编号 | 执行日期 | 执行人 | 结果（通过/失败/阻塞） | 缺陷单号或备注 |
-| --- | --- | --- | --- | --- |
+| ---- | ---- | --- | ------------ | ------- |
 |      |      |     |              |         |
 
 ## 使用说明
@@ -219,4 +293,4 @@
 - 每次回归记录软件版本、测试环境、账号角色和执行结果；库存相关用例同时记录物料、组织及测试前后库存。
 - 失败时保留单据编号、申请编号、物料编码、操作时间和页面提示，便于定位。
 - 涉及修改或删除单据的用例，核对库存余额及库存流水与最终单据一致；库存流水不作为不可修改的审计日志。
-- 当前系统没有独立盘点、调拨、BOM或批量导入业务流程，本清单不将这些未接入功能作为现有功能验收项。
+- 当前系统没有独立盘点、调拨或 BOM 业务流程，本清单不将这些未接入功能作为现有功能验收项；物料批量导入已纳入 TC-20～TC-27（人工测试）。

frontend/src/api/materials.js

@@ -1,4 +1,16 @@
 import request from './index'
+import { getOrganizationId } from '../utils/organizationContext'
+
+// 下载接口绕开 axios，得自己带令牌与当前公司，否则 401 / 400。
+// 令牌沿用拦截器同款读法（localStorage），避免在 API 模块里依赖 Pinia 激活时序。
+function downloadHeaders() {
+  const token = localStorage.getItem('wmms_token')
+  const organizationId = getOrganizationId()
+  return {
+    ...(token ? { Authorization: `Bearer ${token}` } : {}),
+    ...(organizationId ? { 'X-Organization-ID': String(organizationId) } : {})
+  }
+}
 
 export const materialsApi = {
   getAll(params = {}) {
@@ -23,5 +35,18 @@ export const materialsApi = {
     return request.post('/upload', formData, {
       headers: { 'Content-Type': 'multipart/form-data' }
     })
+  },
+  importFile(formData) {
+    // silent：校验失败的明细要自己弹窗展示，不让拦截器先弹一句笼统提示
+    return request.post('/material-import', formData, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+      silent: true
+    })
+  },
+  downloadImportTemplate() {
+    // 下载走原生 fetch：响应是文件流，axios 拦截器只认 JSON 的 code 字段
+    return fetch('/api/material-import/template', {
+      headers: downloadHeaders()
+    })
   }
 }

frontend/src/components/business/MaterialImportResult.test.js

@@ -0,0 +1,63 @@
+import { mount } from '@vue/test-utils'
+import ElementPlus from 'element-plus'
+import { nextTick } from 'vue'
+import { describe, expect, test, vi } from 'vitest'
+import MaterialImportResult from './MaterialImportResult.vue'
+
+const failedResult = {
+  total_rows: 3,
+  success_rows: 0,
+  failed_rows: 2,
+  errors: [
+    { row: 2, data: { name: '', spec: 'M8x30', unit: '个', major: '机械结构类', minor: '标准件' }, reason: '物料名称不能为空' },
+    { row: 4, data: { name: '螺栓', spec: '', unit: '吨', major: '机械结构类', minor: '标准件' }, reason: '单位「吨」不存在或已停用' }
+  ]
+}
+
+// el-table 分两轮渲染：先注册列，下一轮才把单元格填上。只等一个 tick 的话
+// 拿到的是空 <tr>，断言文本会莫名其妙地失败（实测过一次），所以统一等两轮。
+async function mountResult(result, options = {}) {
+  const wrapper = mount(MaterialImportResult, {
+    props: { result },
+    global: { plugins: [ElementPlus], stubs: { teleport: true }, ...options }
+  })
+  await nextTick()
+  await nextTick()
+  return wrapper
+}
+
+describe('MaterialImportResult', () => {
+  test('失败时展示行数摘要与每行错误', async () => {
+    const wrapper = await mountResult(failedResult)
+
+    expect(wrapper.text()).toContain('共 3 行')
+    expect(wrapper.text()).toContain('2 行未通过')
+    const rows = wrapper.findAll('tbody tr')
+    expect(rows.length).toBe(2)
+    expect(rows[0].text()).toContain('2')
+    expect(rows[0].text()).toContain('物料名称不能为空')
+    wrapper.unmount()
+  })
+
+  test('导出错误明细时把行号与原因写进 CSV', async () => {
+    const download = vi.fn()
+    const wrapper = await mountResult(failedResult, { provide: { downloadCsv: download } })
+
+    await wrapper.find('[data-test="export-errors"]').trigger('click')
+
+    expect(download).toHaveBeenCalledTimes(1)
+    const [fileName, csv] = download.mock.calls[0]
+    expect(fileName).toContain('导入错误明细')
+    expect(csv).toContain('物料名称不能为空')
+    expect(csv).toContain('行号')
+    wrapper.unmount()
+  })
+
+  test('全部成功时只展示成功摘要，不显示错误表格', async () => {
+    const wrapper = await mountResult({ total_rows: 2, success_rows: 2, failed_rows: 0, errors: [] })
+
+    expect(wrapper.text()).toContain('成功导入 2 条')
+    expect(wrapper.find('[data-test="error-table"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+})

frontend/src/components/business/MaterialImportResult.vue

@@ -0,0 +1,117 @@
+<template>
+  <div class="import-result">
+    <el-alert
+      v-if="result.failed_rows === 0"
+      :title="`共 ${result.total_rows} 行，成功导入 ${result.success_rows} 条`"
+      type="success"
+      :closable="false"
+      show-icon
+    />
+    <el-alert
+      v-else
+      :title="`共 ${result.total_rows} 行，${result.failed_rows} 行未通过，本次未导入任何数据`"
+      type="error"
+      :closable="false"
+      show-icon
+    />
+
+    <template v-if="result.failed_rows > 0">
+      <div class="toolbar">
+        <el-button type="primary" plain data-test="export-errors" @click="exportErrors">导出错误明细</el-button>
+      </div>
+
+      <el-table
+        data-test="error-table"
+        :data="pagedErrors"
+        size="small"
+        border
+        max-height="320"
+      >
+        <el-table-column prop="row" label="行号" width="80" />
+        <el-table-column label="物料名称" width="140">
+          <template #default="{ row }">{{ row.data.name || '—' }}</template>
+        </el-table-column>
+        <el-table-column label="规格" width="120">
+          <template #default="{ row }">{{ row.data.spec || '—' }}</template>
+        </el-table-column>
+        <el-table-column label="单位" width="90">
+          <template #default="{ row }">{{ row.data.unit || '—' }}</template>
+        </el-table-column>
+        <el-table-column label="大类" width="140">
+          <template #default="{ row }">{{ row.data.major || '—' }}</template>
+        </el-table-column>
+        <el-table-column label="小类" width="120">
+          <template #default="{ row }">{{ row.data.minor || '—' }}</template>
+        </el-table-column>
+        <el-table-column prop="reason" label="失败原因" min-width="220" />
+      </el-table>
+
+      <BasePagination
+        :current-page="currentPage"
+        :page-size="pageSize"
+        :total="result.errors.length"
+        @change="handlePageChange"
+      />
+    </template>
+
+    <div class="footer">
+      <el-button @click="$emit('close')">关闭</el-button>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { computed, inject, ref } from 'vue'
+import BasePagination from './BasePagination.vue'
+import { buildCsv, downloadCsv as defaultDownloadCsv } from '../../utils/exportCsv'
+
+const props = defineProps({
+  result: { type: Object, required: true }
+})
+defineEmits(['close'])
+
+// 注入只用于测试替换下载动作，生产走默认实现。
+const downloadCsv = inject('downloadCsv', defaultDownloadCsv)
+
+const pageSize = 20
+const currentPage = ref(1)
+
+const pagedErrors = computed(() => {
+  const start = (currentPage.value - 1) * pageSize
+  return props.result.errors.slice(start, start + pageSize)
+})
+
+function handlePageChange(page) {
+  currentPage.value = page
+}
+
+function exportErrors() {
+  const rows = [['行号', '物料名称', '规格', '单位', '大类', '小类', '失败原因']]
+  for (const item of props.result.errors) {
+    rows.push([
+      item.row,
+      item.data?.name || '',
+      item.data?.spec || '',
+      item.data?.unit || '',
+      item.data?.major || '',
+      item.data?.minor || '',
+      item.reason
+    ])
+  }
+  downloadCsv(`导入错误明细_${timestampSuffix()}.csv`, buildCsv(rows))
+}
+
+// 文件名后缀用本地时间，不依赖 datetime.js 的展示格式
+function timestampSuffix() {
+  const now = new Date()
+  const pad = value => String(value).padStart(2, '0')
+  return `${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}`
+    + `-${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}`
+}
+</script>
+
+<style scoped>
+.import-result { display: flex; flex-direction: column; gap: 12px; }
+.toolbar { display: flex; justify-content: flex-end; }
+.footer { display: flex; justify-content: flex-end; }
+</style>

frontend/src/utils/exportCsv.js

@@ -0,0 +1,27 @@
+// 生成 CSV 文本。带 UTF-8 BOM（写成转义而不是内联零宽字符，源码里才看得见），
+// Excel 打开中文才不会乱码；字段里的逗号、引号、换行按 RFC 4180 用双引号包裹并转义。
+export function buildCsv(rows) {
+  const lines = rows.map(row => row.map(escapeCsvCell).join(','))
+  return '\uFEFF' + lines.map(line => line + '\r\n').join('')
+}
+
+function escapeCsvCell(value) {
+  const text = value === null || value === undefined ? '' : String(value)
+  if (/[",\r\n]/.test(text)) {
+    return `"${text.replace(/"/g, '""')}"`
+  }
+  return text
+}
+
+// 触发浏览器下载。用 Blob + a[download]，不依赖任何第三方库。
+export function downloadCsv(fileName, csv) {
+  const blob = new Blob([csv], { type: 'text/csv;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const link = document.createElement('a')
+  link.href = url
+  link.download = fileName
+  document.body.appendChild(link)
+  link.click()
+  document.body.removeChild(link)
+  URL.revokeObjectURL(url)
+}

frontend/src/utils/exportCsv.test.js

@@ -0,0 +1,21 @@
+import { describe, expect, test } from 'vitest'
+import { buildCsv } from './exportCsv'
+
+// BOM 用转义写，不内联那个零宽字符：内联的话看不见也改不动，
+// 一旦被编辑器或编码转换吃掉，测试就会以一个极难看懂的方式失败。
+const BOM = '\uFEFF'
+
+describe('buildCsv', () => {
+  test('用逗号分隔并在行尾换行', () => {
+    const csv = buildCsv([
+      ['行号', '失败原因'],
+      [3, '物料名称不能为空']
+    ])
+    expect(csv).toBe(BOM + '行号,失败原因\r\n3,物料名称不能为空\r\n')
+  })
+
+  test('包含逗号、引号、换行的字段用双引号包裹并转义', () => {
+    const csv = buildCsv([['规格', '备注'], ['M8,30', '含"引号"'], ['两\n行', '']])
+    expect(csv).toBe(BOM + '规格,备注\r\n"M8,30","含""引号"""\r\n"两\n行",\r\n')
+  })
+})

frontend/src/views/Logs.test.js

@@ -0,0 +1,45 @@
+import { flushPromises, mount } from '@vue/test-utils'
+import ElementPlus from 'element-plus'
+import { describe, expect, test, vi } from 'vitest'
+import Logs from './Logs.vue'
+
+vi.mock('../stores/logs', () => ({
+  useLogsStore: () => ({
+    logs: [], loading: false,
+    page: { currentPage: 1, pageSize: 20, total: 0 },
+    fetchLogs: vi.fn()
+  })
+}))
+vi.mock('../stores/materials', () => ({
+  useMaterialsStore: () => ({
+    historicalMaterialOptions: [],
+    fetchHistoricalMaterialOptions: vi.fn()
+  })
+}))
+
+describe('导入日志详情', () => {
+  test('显示导入时的字段详情并保留换行', async () => {
+    const description = '批量导入创建：螺栓（RTIMP0001）\n物料编码：RTIMP0001\n名称：螺栓\n规格：M8\n分类：机械结构类 / 标准件\n单位：个\n状态：启用'
+    const wrapper = mount(Logs, {
+      global: {
+        plugins: [ElementPlus],
+        stubs: { teleport: true, ElSelect: true, ElOption: true, ElDatePicker: true }
+      }
+    })
+    try {
+      wrapper.vm.$.setupState.showDetail({
+        material_id: 31, operation_type: 'CREATE', operator: 'tester',
+        created_at: '2026-10-12T10:00:00', description,
+        old_value: '', new_value: '{"name":"螺栓","material_code":"RTIMP0001"}'
+      })
+      await flushPromises()
+
+      const detail = wrapper.get('.log-description')
+      expect(detail.text()).toBe(description)
+      expect(detail.element.style.whiteSpace).toBe('pre-wrap')
+      expect(wrapper.find('.value-compare').text()).toContain('"material_code": "RTIMP0001"')
+    } finally {
+      wrapper.unmount()
+    }
+  })
+})

frontend/src/views/Logs.vue

@@ -72,7 +72,9 @@
         <el-descriptions-item label="操作类型" :span="2"><StatusBadge :status="currentRow.operation_type" /></el-descriptions-item>
         <el-descriptions-item label="操作人">{{ currentRow.operator }}</el-descriptions-item>
         <el-descriptions-item label="时间">{{ formatDate(currentRow.created_at) }}</el-descriptions-item>
-        <el-descriptions-item label="详情" :span="2">{{ currentRow.description }}</el-descriptions-item>
+        <el-descriptions-item label="详情" :span="2">
+          <span class="log-description" style="white-space: pre-wrap; overflow-wrap: anywhere">{{ currentRow.description }}</span>
+        </el-descriptions-item>
       </el-descriptions>
       <div v-if="currentRow?.old_value || currentRow?.new_value" class="value-compare">
         <h4>变更对比</h4>

frontend/src/views/Materials.test.js

@@ -20,6 +20,11 @@ const materialsStore = vi.hoisted(() => ({
   getCategoryDisplay: vi.fn(() => '-')
 }))
 
+const materialsApi = vi.hoisted(() => ({
+  importFile: vi.fn(),
+  downloadImportTemplate: vi.fn()
+}))
+
 vi.mock('../stores/materials', () => ({ useMaterialsStore: () => materialsStore }))
 vi.mock('../stores/auth', () => ({ useAuthStore: () => ({ isAdmin: true }) }))
 // 切换公司的未保存确认由组织 store 承载；这里只关心页面本身，替身掉守卫注册。
@@ -42,6 +47,7 @@ vi.mock('../api/masterData', () => ({
   unitsApi: { list: vi.fn() },
   codeRulesApi: { next: vi.fn() }
 }))
+vi.mock('../api/materials', () => ({ materialsApi }))
 
 // 真实的 ElSelect 在 jsdom 下会因自身更新报 "Maximum recursive updates exceeded"，
 // 这里用替身直接派发 change，模拟用户选中某个分类。
@@ -607,3 +613,118 @@ describe('物料图片上传的保存互斥', () => {
     wrapper.unmount()
   })
 })
+
+describe('批量导入', () => {
+  beforeEach(() => {
+    materialCategoriesApi.list.mockResolvedValue({ data: categories })
+    unitsApi.list.mockResolvedValue({ data: [] })
+    materialsApi.importFile.mockReset()
+    materialsApi.downloadImportTemplate.mockReset()
+    materialsStore.fetchMaterials.mockReset()
+    vi.spyOn(ElMessage, 'success').mockImplementation(() => {})
+    vi.spyOn(ElMessage, 'error').mockImplementation(() => {})
+    vi.spyOn(console, 'error').mockImplementation(() => {})
+  })
+
+  afterEach(() => {
+    vi.restoreAllMocks()
+  })
+
+  test('批量导入成功后提示成功并刷新列表', async () => {
+    materialsApi.importFile.mockResolvedValue({
+      data: { total_rows: 2, success_rows: 2, failed_rows: 0, errors: [] }
+    })
+
+    const wrapper = mountMaterials()
+    await flushPromises()
+    // 挂载时 onMounted 已经拉过一次列表，清掉才能断言“导入后又拉了一次”
+    materialsStore.fetchMaterials.mockClear()
+
+    await setupState(wrapper).handleImportFile({
+      target: { files: [new File(['x'], '物料.xlsx')], value: '物料.xlsx' }
+    })
+    await flushPromises()
+
+    expect(materialsApi.importFile).toHaveBeenCalled()
+    expect(materialsStore.fetchMaterials).toHaveBeenCalledWith(1, '', 'all')
+    expect(ElMessage.success).toHaveBeenCalledWith('成功导入 2 条物料')
+    wrapper.unmount()
+  })
+
+  test('批量导入失败时展示错误明细且不刷新列表', async () => {
+    const error = new Error('校验未通过')
+    error.response = {
+      data: {
+        code: 400,
+        message: '有 1 行校验未通过，本次未导入任何数据',
+        data: {
+          total_rows: 1, success_rows: 0, failed_rows: 1,
+          errors: [{ row: 2, data: { name: '', spec: '', unit: '', major: '', minor: '' }, reason: '物料名称不能为空' }]
+        }
+      }
+    }
+    materialsApi.importFile.mockRejectedValue(error)
+
+    const wrapper = mountMaterials()
+    await flushPromises()
+    materialsStore.fetchMaterials.mockClear()
+
+    await setupState(wrapper).handleImportFile({
+      target: { files: [new File(['x'], '物料.xlsx')], value: '物料.xlsx' }
+    })
+    await flushPromises()
+
+    expect(setupState(wrapper).importResult.failed_rows).toBe(1)
+    expect(ElMessage.error).not.toHaveBeenCalled()
+    expect(materialsStore.fetchMaterials).not.toHaveBeenCalled()
+    wrapper.unmount()
+  })
+
+  test.each([
+    [400, '模板格式不正确，请重新下载最新模板', '模板格式不正确，请重新下载最新模板'],
+    [400, '文件超过 1MB 上限', '文件超过 1MB 上限'],
+    [500, '物料编码已存在', '物料编码已存在'],
+    [500, 'Internal Server Error', '批量导入失败'],
+    [500, undefined, '批量导入失败']
+  ])('HTTP %s 导入错误无逐行明细时提示：%s', async (status, message, expected) => {
+    const error = new Error(`Request failed with status code ${status}`)
+    error.response = { status, data: { code: status, message } }
+    materialsApi.importFile.mockRejectedValue(error)
+
+    const wrapper = mountMaterials()
+    try {
+      await flushPromises()
+      materialsStore.fetchMaterials.mockClear()
+
+      await setupState(wrapper).handleImportFile({
+        target: { files: [new File(['x'], '物料.xlsx')], value: '物料.xlsx' }
+      })
+      await flushPromises()
+
+      expect(ElMessage.error).toHaveBeenCalledTimes(1)
+      expect(ElMessage.error).toHaveBeenCalledWith(expected)
+      expect(setupState(wrapper).importDialogVisible).toBe(false)
+      expect(setupState(wrapper).importing).toBe(false)
+      expect(materialsStore.fetchMaterials).not.toHaveBeenCalled()
+    } finally {
+      wrapper.unmount()
+    }
+  })
+
+  test('网络中断时仍提示导入失败并解除上传状态', async () => {
+    materialsApi.importFile.mockRejectedValue(new Error('Network Error'))
+    const wrapper = mountMaterials()
+    try {
+      await flushPromises()
+      await setupState(wrapper).handleImportFile({
+        target: { files: [new File(['x'], '物料.xlsx')], value: '物料.xlsx' }
+      })
+
+      expect(ElMessage.error).toHaveBeenCalledTimes(1)
+      expect(ElMessage.error).toHaveBeenCalledWith('批量导入失败')
+      expect(setupState(wrapper).importing).toBe(false)
+    } finally {
+      wrapper.unmount()
+    }
+  })
+})

frontend/src/views/Materials.vue

@@ -2,7 +2,18 @@
   <div class="materials-page">
     <div class="page-header">
       <h2>物料主数据</h2>
+      <div class="header-actions">
+        <el-button @click="handleDownloadTemplate">下载模板</el-button>
+        <el-button @click="triggerImport">批量导入</el-button>
         <el-button type="primary" @click="showAddModal">新增物料</el-button>
+        <input
+          ref="importInput"
+          type="file"
+          accept=".xlsx"
+          style="display: none"
+          @change="handleImportFile"
+        />
+      </div>
     </div>
 
     <div class="search-bar">
@@ -105,7 +116,7 @@
           </el-select>
         </el-form-item>
         <el-form-item label="单位">
-          <el-select v-model="form.base_unit_id" style="width: 100%" @change="syncUnit">
+          <el-select v-model="form.base_unit_id" placeholder="未选择单位时，默认使用“个”" style="width: 100%" @change="syncUnit">
             <el-option v-for="unit in units" :key="unit.id" :label="unit.code === unit.name ? unit.code : `${unit.code} - ${unit.name}`" :value="unit.id" />
           </el-select>
         </el-form-item>
@@ -162,6 +173,10 @@
       :on-confirm="confirmDelete"
     />
 
+    <el-dialog v-model="importDialogVisible" title="批量导入结果" width="900px" @closed="handleImportDialogClosed">
+      <MaterialImportResult v-if="importResult" :result="importResult" @close="importDialogVisible = false" />
+    </el-dialog>
+
     <AlertTip :message="alertMessage" :type="alertType" />
   </div>
 </template>
@@ -175,9 +190,11 @@ import { useSavingGuard } from '../composables/useSavingGuard'
 import BaseTable from '../components/business/BaseTable.vue'
 import DeleteConfirm from '../components/business/DeleteConfirm.vue'
 import AlertTip from '../components/business/AlertTip.vue'
+import MaterialImportResult from '../components/business/MaterialImportResult.vue'
 import { ElMessage, ElMessageBox } from 'element-plus'
 import { createMaterialForm, toMaterialPayload } from './materialForm'
 import { codeRulesApi, materialCategoriesApi, unitsApi } from '../api/masterData'
+import { materialsApi } from '../api/materials'
 import { getMajorCategories, getMinorCategories, resolveCategoryPath } from '../utils/materialCategories'
 import { searchMaterialOptions } from '../utils/materialSearch'
 import { errorText } from '../utils/errorText'
@@ -212,6 +229,10 @@ const alertMessage = ref('')
 const alertType = ref('success')
 const imagePreview = ref('')
 const imageInput = ref(null)
+const importInput = ref(null)
+const importDialogVisible = ref(false)
+const importResult = ref(null)
+const importing = ref(false)
 const categories = ref([])
 const units = ref([])
 // 用户是否手改过编码：没改过时切分类要按新规则重算，改过就以用户的值为准。
@@ -253,6 +274,79 @@ function handleImageUpload(e) {
   }
 }
 
+// 批量导入入口：上传期间再点不该重新弹选择框
+function triggerImport() {
+  if (importing.value) return
+  importInput.value?.click()
+}
+
+async function handleImportFile(event) {
+  const file = event.target.files?.[0]
+  // 清空 input，否则连续选同一个文件不会再触发 change
+  event.target.value = ''
+  if (!file) return
+  if (!file.name.toLowerCase().endsWith('.xlsx')) {
+    ElMessage.warning('只支持 .xlsx 文件')
+    return
+  }
+  if (file.size > 1 * 1024 * 1024) {
+    ElMessage.warning('文件不能超过 1MB')
+    return
+  }
+
+  const formData = new FormData()
+  formData.append('file', file)
+
+  importing.value = true
+  try {
+    // 导入是写请求：包进保存互斥，飞行期间禁止切换公司
+    const res = await runWithSaving(() => materialsApi.importFile(formData))
+    const result = res.data
+    await materialsStore.fetchMaterials(1, '', 'all')
+    searchKeyword.value = ''
+    ElMessage.success(`成功导入 ${result.success_rows} 条物料`)
+  } catch (e) {
+    // 校验失败时响应里带逐行明细，弹窗展示；其余错误走兜底提示
+    const detail = e?.response?.data?.data
+    if (detail && Array.isArray(detail.errors)) {
+      importResult.value = detail
+      importDialogVisible.value = true
+    } else {
+      // 导入请求关闭了全局提示，HTTP 错误和网络错误都由页面兜底。
+      console.error('批量导入失败:', e)
+      ElMessage.error(errorText(e, '批量导入失败'))
+    }
+  } finally {
+    importing.value = false
+  }
+}
+
+function handleImportDialogClosed() {
+  importResult.value = null
+}
+
+async function handleDownloadTemplate() {
+  try {
+    const res = await runWithSaving(() => materialsApi.downloadImportTemplate())
+    if (!res.ok) {
+      ElMessage.error('模板下载失败')
+      return
+    }
+    const blob = await res.blob()
+    const url = URL.createObjectURL(blob)
+    const link = document.createElement('a')
+    link.href = url
+    link.download = '物料导入模板.xlsx'
+    document.body.appendChild(link)
+    link.click()
+    document.body.removeChild(link)
+    URL.revokeObjectURL(url)
+  } catch (e) {
+    console.error('下载模板失败:', e)
+    ElMessage.error('模板下载失败')
+  }
+}
+
 const form = reactive(createMaterialForm())
 
 onMounted(async () => {
@@ -416,6 +510,14 @@ async function handleSave() {
     ElMessage.warning('请填写物料名称')
     return
   }
+  if (Array.from(form.name).length > 200) {
+    ElMessage.warning('物料名称过长，请小于200字')
+    return
+  }
+  if (Array.from(form.spec || '').length > 200) {
+    ElMessage.warning('物料规格过长，请小于200字')
+    return
+  }
   saveLoading.value = true
   try {
     const formData = toMaterialPayload(form)
@@ -507,6 +609,10 @@ useOrganizationSwitchGuard(() => hasUnsavedChanges.value)
   align-items: center;
   margin-bottom: 20px;
 }
+.header-actions {
+  display: flex;
+  gap: 8px;
+}
 .search-bar {
   display: flex;
   width: 100%;

frontend/src/views/materialForm.js

@@ -18,7 +18,7 @@ export function createMaterialForm(source = {}, categories = []) {
     name: source.name || '',
     spec: source.spec || '',
     category: source.category || '',
-    unit: source.unit || 'pcs',
+    unit: source.unit || '个',
     material_image: source.material_image || '',
     major_category_id: source.major_category_id ?? major?.id ?? null,
     category_id: source.category_id ?? null,
@@ -31,6 +31,6 @@ export function toMaterialPayload(source) {
   for (const key of materialKeys) {
     payload[key] = key.endsWith('_id') ? source[key] ?? null : source[key] || ''
   }
-  if (!payload.unit) payload.unit = 'pcs'
+  if (!payload.unit) payload.unit = '个'
   return payload
 }

frontend/src/views/materialForm.test.js

@@ -13,7 +13,7 @@ describe('material master-data form', () => {
       name: '',
       spec: '',
       category: '',
-      unit: 'pcs',
+      unit: '个',
       material_image: '',
       major_category_id: null,
       category_id: null,

go.mod

@@ -3,37 +3,42 @@ module github.com/wmms/wmms
 go 1.21
 
 require (
+	github.com/DATA-DOG/go-sqlmock v1.5.2
 	github.com/gin-gonic/gin v1.9.1
+	github.com/go-playground/validator/v10 v10.14.0
 	github.com/go-sql-driver/mysql v1.7.1
 	github.com/gorilla/websocket v1.5.0
-	golang.org/x/crypto v0.9.0
+	github.com/shopspring/decimal v1.4.0
+	github.com/xuri/excelize/v2 v2.8.1
+	golang.org/x/crypto v0.19.0
 )
 
 require (
-	github.com/DATA-DOG/go-sqlmock v1.5.2 // indirect
 	github.com/bytedance/sonic v1.9.1 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.14.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
-	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
 	github.com/leodido/go-urn v1.2.4 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
-	github.com/shopspring/decimal v1.4.0 // indirect
+	github.com/richardlehane/mscfb v1.0.4 // indirect
+	github.com/richardlehane/msoleps v1.0.3 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.11 // indirect
+	github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53 // indirect
+	github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05 // indirect
 	golang.org/x/arch v0.3.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/net v0.21.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -27,8 +27,6 @@ github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrt
 github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
-github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
-github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -50,10 +48,17 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 h1:RWengNIwukTxcDr9M+97sNutRR1RKhG96O6jWumTTnw=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
 github.com/pelletier/go-toml/v2 v2.0.8 h1:0ctb6s9mE31h0/lhu+J6OPmVeDxJn+kYnJc2jZR9tGQ=
 github.com/pelletier/go-toml/v2 v2.0.8/go.mod h1:vuYfssBdrU2XDZ9bYydBu6t+6a6PYNcZljzZR9VXg+4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/richardlehane/mscfb v1.0.4 h1:WULscsljNPConisD5hR0+OyZjwK46Pfyr6mPu5ZawpM=
+github.com/richardlehane/mscfb v1.0.4/go.mod h1:YzVpcZg9czvAuhk9T+a3avCpcFPMUWm7gK3DypaEsUk=
+github.com/richardlehane/msoleps v1.0.1/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
+github.com/richardlehane/msoleps v1.0.3 h1:aznSZzrwYRl3rLKRT3gUk9am7T/mLNSnJINvN0AQoVM=
+github.com/richardlehane/msoleps v1.0.3/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
 github.com/shopspring/decimal v1.4.0 h1:bxl37RwXBklmTi0C79JfXCEBD1cqqHt0bbgBAGFp81k=
 github.com/shopspring/decimal v1.4.0/go.mod h1:gawqmDU56v4yIKSwfBSFip1HdCCXN8/+DMd9qYNcwME=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -65,25 +70,34 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
 github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
 github.com/ugorji/go/codec v1.2.11/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
+github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53 h1:Chd9DkqERQQuHpXjR/HSV1jLZA6uaoiwwH3vSuF3IW0=
+github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53/go.mod h1:ybY/Jr0T0GTCnYjKqmdwxyxn2BQf2RcQIIvex5QldPI=
+github.com/xuri/excelize/v2 v2.8.1 h1:pZLMEwK8ep+CLIUWpWmvW8IWE/yxqG0I1xcN6cVMGuQ=
+github.com/xuri/excelize/v2 v2.8.1/go.mod h1:oli1E4C3Pa5RXg1TBXn4ENCXDV5JUMlBluUhG7c+CEE=
+github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05 h1:qhbILQo1K3mphbwKh1vNm4oGezE1eF9fQWmNiIpSfI4=
+github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05/go.mod h1:WwHg+CVyzlv/TX9xqBFXEZAuxOPxn2k1GNHwG41IIUQ=
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/arch v0.3.0 h1:02VY4/ZcO/gBOH6PUaoiptASxtXU10jazRCP865E97k=
 golang.org/x/arch v0.3.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
-golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
-golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
-golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/image v0.14.0 h1:tNgSxAFe3jC4uYqvZdTr84SZoM1KfwdC9SKIFrLjFn4=
+golang.org/x/image v0.14.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
-golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=

internal/handler/api.go

@@ -27,6 +27,7 @@ type Handler struct {
 	masterDataSvc     *service.MasterDataService
 	partnerSvc        *service.PartnerService
 	warehouseSvc      *service.WarehouseService
+	materialImportSvc *service.MaterialImportService
 }
 
 func userFacingServiceErrorMessage(err error) string {
@@ -49,6 +50,7 @@ func NewHandler() *Handler {
 		masterDataSvc:     service.NewMasterDataService(),
 		partnerSvc:        service.NewPartnerService(),
 		warehouseSvc:      service.NewWarehouseService(),
+		materialImportSvc: service.NewMaterialImportService(),
 	}
 }
 
@@ -93,6 +95,17 @@ func (h *Handler) RegisterRoutes(r *gin.Engine) {
 			materials.POST("/:id/restore", h.RestoreMaterial)
 		}
 
+		// 物料批量导入单独挂前缀。这不是 gin 的限制——实测 v1.9.1 允许静态段与
+		// :id 同层共存，把它放进上面的 materials 组并不会冲突；独立成前缀是因为
+		// 「导入」是含模板下载与上传入库的一条完整链路，两个端点归在一处，
+		// 也避免 /materials/import 被读成某个物料的 id。
+		materialImport := api.Group("/material-import")
+		materialImport.Use(middleware.AuthMiddleware(), middleware.OrganizationMiddleware())
+		{
+			materialImport.GET("/template", h.DownloadMaterialImportTemplate)
+			materialImport.POST("", h.ImportMaterials)
+		}
+
 		inbound := api.Group("/inbound")
 		inbound.Use(middleware.AuthMiddleware(), middleware.OrganizationMiddleware())
 		{
@@ -319,7 +332,7 @@ func (h *Handler) CreateMaterial(c *gin.Context) {
 
 	material, err := h.materialSvc.Create(&req, operator)
 	if err != nil {
-		if errors.Is(err, service.ErrInvalidMaterialCategory) || errors.Is(err, service.ErrInvalidMaterialUnit) {
+		if errors.Is(err, service.ErrInvalidMaterialCategory) || errors.Is(err, service.ErrInvalidMaterialUnit) || errors.Is(err, service.ErrMaterialNameTooLong) || errors.Is(err, service.ErrMaterialSpecTooLong) {
 			response.BadRequest(c, err.Error())
 			return
 		}
@@ -358,7 +371,7 @@ func (h *Handler) UpdateMaterial(c *gin.Context) {
 
 	material, err := h.materialSvc.Update(orgID, id, &req, operator)
 	if err != nil {
-		if errors.Is(err, service.ErrInvalidMaterialCategory) || errors.Is(err, service.ErrInvalidMaterialUnit) {
+		if errors.Is(err, service.ErrInvalidMaterialCategory) || errors.Is(err, service.ErrInvalidMaterialUnit) || errors.Is(err, service.ErrMaterialNameTooLong) || errors.Is(err, service.ErrMaterialSpecTooLong) {
 			response.BadRequest(c, err.Error())
 			return
 		}

internal/handler/material_import.go

@@ -0,0 +1,92 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+	"net/url"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"github.com/wmms/wmms/internal/middleware"
+	"github.com/wmms/wmms/internal/service"
+	"github.com/wmms/wmms/pkg/response"
+)
+
+// DownloadMaterialImportTemplate 返回物料导入模板文件。模板随代码生成，
+// 不落盘，保证下载到的永远和当前校验规则一致。
+func (h *Handler) DownloadMaterialImportTemplate(c *gin.Context) {
+	data, err := service.BuildMaterialImportTemplate()
+	if err != nil {
+		response.InternalError(c, "模板生成失败")
+		return
+	}
+	fileName := url.PathEscape("物料导入模板.xlsx")
+	c.Header("Content-Disposition", `attachment; filename="material-import-template.xlsx"; filename*=UTF-8''`+fileName)
+	c.Data(http.StatusOK, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", data)
+}
+
+// ImportMaterials 接收上传的 xlsx，校验通过即整批入库。
+// 校验失败返回 400 且 data 里带逐行错误明细。
+func (h *Handler) ImportMaterials(c *gin.Context) {
+	orgID, ok := organizationID(c)
+	if !ok {
+		return
+	}
+
+	// 在 multipart 解析前限制读取；文件限额之外仅给表单头部预留少量空间。
+	const maxRequestBytes = service.MaterialImportMaxBytes + (64 << 10)
+	if c.Request.ContentLength > maxRequestBytes {
+		response.BadRequest(c, "文件超过 1MB 上限或表单数据过大")
+		return
+	}
+	c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, maxRequestBytes)
+	defer c.Request.Body.Close()
+	defer func() {
+		if c.Request.MultipartForm != nil {
+			_ = c.Request.MultipartForm.RemoveAll()
+		}
+	}()
+
+	file, err := c.FormFile("file")
+	if err != nil {
+		var sizeErr *http.MaxBytesError
+		if errors.As(err, &sizeErr) {
+			response.BadRequest(c, "文件超过 1MB 上限或表单数据过大")
+			return
+		}
+		response.BadRequest(c, "请选择要导入的 xlsx 文件")
+		return
+	}
+	if file.Size > service.MaterialImportMaxBytes {
+		response.BadRequest(c, "文件超过 1MB 上限")
+		return
+	}
+
+	source, err := file.Open()
+	if err != nil {
+		response.BadRequest(c, "文件读取失败")
+		return
+	}
+	defer source.Close()
+
+	operator := middleware.GetCurrentUsername(c)
+	if operator == "" {
+		operator = "系统"
+	}
+
+	result, err := h.materialImportSvc.Import(orgID, operator, file.Filename, source)
+	if err != nil {
+		if errors.Is(err, service.ErrImportTemplateInvalid) || errors.Is(err, service.ErrImportTooManyRows) {
+			response.BadRequest(c, err.Error())
+			return
+		}
+		response.InternalError(c, err.Error())
+		return
+	}
+	if result.FailedRows > 0 {
+		response.ErrorWithData(c, http.StatusBadRequest,
+			"有 "+strconv.Itoa(result.FailedRows)+" 行校验未通过，本次未导入任何数据", result)
+		return
+	}
+	response.Created(c, "成功导入 "+strconv.Itoa(result.SuccessRows)+" 条物料", result)
+}

internal/handler/material_import_test.go

@@ -0,0 +1,115 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/wmms/wmms/internal/service"
+	"github.com/wmms/wmms/pkg/response"
+)
+
+type countedImportBody struct {
+	io.Reader
+	read int64
+}
+
+func (body *countedImportBody) Read(p []byte) (int, error) {
+	n, err := body.Reader.Read(p)
+	body.read += int64(n)
+	return n, err
+}
+
+func (*countedImportBody) Close() error { return nil }
+
+func TestMaterialImportRejectsLargeBodyBeforeReadingItAll(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	var payload bytes.Buffer
+	writer := multipart.NewWriter(&payload)
+	part, err := writer.CreateFormFile("file", "物料.xlsx")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := part.Write(bytes.Repeat([]byte("x"), 8<<20)); err != nil {
+		t.Fatal(err)
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatal(err)
+	}
+	for _, contentLength := range []int64{int64(payload.Len()), -1} {
+		t.Run(fmt.Sprintf("content-length=%d", contentLength), func(t *testing.T) {
+			body := &countedImportBody{Reader: bytes.NewReader(payload.Bytes())}
+			recorder := httptest.NewRecorder()
+			c, _ := gin.CreateTestContext(recorder)
+			c.Set("organization_id", int64(1))
+			c.Request = httptest.NewRequest(http.MethodPost, "/material-import", nil)
+			c.Request.Body = body
+			c.Request.ContentLength = contentLength
+			c.Request.Header.Set("Content-Type", writer.FormDataContentType())
+			(&Handler{}).ImportMaterials(c)
+			if recorder.Code != http.StatusBadRequest || !strings.Contains(recorder.Body.String(), "1MB") {
+				t.Fatalf("status=%d, body=%s", recorder.Code, recorder.Body.String())
+			}
+			if body.read > service.MaterialImportMaxBytes+(64<<10)+1 {
+				t.Fatalf("超大请求已读取 %d 字节，应在解析前限制读取", body.read)
+			}
+		})
+	}
+}
+
+func TestMaterialImportFileSizeBoundaryAllowsMultipartOverhead(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	for _, size := range []int{service.MaterialImportMaxBytes, service.MaterialImportMaxBytes + 1} {
+		t.Run(fmt.Sprintf("file-size=%d", size), func(t *testing.T) {
+			var payload bytes.Buffer
+			writer := multipart.NewWriter(&payload)
+			part, err := writer.CreateFormFile("file", "物料.xlsx")
+			if err != nil {
+				t.Fatal(err)
+			}
+			if _, err := part.Write(bytes.Repeat([]byte("x"), size)); err != nil {
+				t.Fatal(err)
+			}
+			if err := writer.Close(); err != nil {
+				t.Fatal(err)
+			}
+			recorder := httptest.NewRecorder()
+			c, _ := gin.CreateTestContext(recorder)
+			c.Set("organization_id", int64(1))
+			c.Request = httptest.NewRequest(http.MethodPost, "/material-import", bytes.NewReader(payload.Bytes()))
+			c.Request.Header.Set("Content-Type", writer.FormDataContentType())
+			(&Handler{materialImportSvc: service.NewMaterialImportService()}).ImportMaterials(c)
+			want := "模板格式不正确"
+			if size > service.MaterialImportMaxBytes {
+				want = "文件超过 1MB 上限"
+			}
+			if recorder.Code != http.StatusBadRequest || !strings.Contains(recorder.Body.String(), want) {
+				t.Fatalf("status=%d, body=%s, want %s", recorder.Code, recorder.Body.String(), want)
+			}
+		})
+	}
+}
+
+func TestErrorWithDataKeepsPayload(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	recorder := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(recorder)
+
+	response.ErrorWithData(c, http.StatusBadRequest, "有 1 行校验未通过", map[string]interface{}{
+		"total_rows": 1, "failed_rows": 1,
+	})
+
+	if recorder.Code != http.StatusBadRequest {
+		t.Fatalf("status = %d, want 400", recorder.Code)
+	}
+	body := recorder.Body.String()
+	if !strings.Contains(body, "有 1 行校验未通过") || !strings.Contains(body, `"failed_rows":1`) {
+		t.Fatalf("body = %s", body)
+	}
+}

internal/handler/material_organization_test.go

@@ -150,12 +150,12 @@ func TestCreateMaterialUsesHeaderOrganizationInsteadOfBody(t *testing.T) {
 	mock.ExpectQuery(lockCodeRulePattern).WithArgs(int64(1), int64(12)).
 		WillReturnRows(materialRow([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}))
 	mock.ExpectExec(materialInsertPattern).
-		WithArgs(int64(1), "HDR-001", "轴承", nil, "", nil, int64(12), nil, "pcs", "active", 1).
+		WithArgs(int64(1), "HDR-001", "轴承", nil, "", nil, int64(12), nil, "个", "active", 1).
 		WillReturnResult(sqlmock.NewResult(7, 1))
 	mock.ExpectCommit()
 	mock.ExpectQuery(materialGetByIDPattern).WithArgs(int64(1), int64(7)).
 		WillReturnRows(materialRow(materialColumns(),
-			int64(7), int64(1), "HDR-001", "轴承", nil, "", nil, int64(12), nil, "pcs", "active", 1, time.Now(), time.Now()))
+			int64(7), int64(1), "HDR-001", "轴承", nil, "", nil, int64(12), nil, "个", "active", 1, time.Now(), time.Now()))
 	mock.ExpectExec(materialLogInsertPattern).
 		WithArgs("CREATE", int64(7), "", sqlmock.AnyArg(), "operator", sqlmock.AnyArg()).
 		WillReturnResult(sqlmock.NewResult(1, 1))

internal/handler/routes_test.go

@@ -31,6 +31,7 @@ func TestPhaseOneAndLegacyRoutesAreRegistered(t *testing.T) {
 		"POST /api/materials/:id/obsolete", "POST /api/materials/:id/restore",
 		"PUT /api/stock/:materialId/warning", "GET /api/stock/:materialId/details",
 		"POST /api/applications", "GET /api/logs",
+		"GET /api/material-import/template", "POST /api/material-import",
 	}
 	for _, route := range want {
 		if !registered[route] {

internal/model/material_import.go

@@ -0,0 +1,61 @@
+package model
+
+import "time"
+
+// MaterialImportRow 是解析后的一行原始数据。Row 保留 Excel 真实行号（从 1
+// 开始、含表头行），校验失败时用它定位，用户可直接对着 Excel 找。
+type MaterialImportRow struct {
+	Row       int
+	Name      string
+	Spec      string
+	Unit      string
+	MajorName string
+	MinorName string
+}
+
+// Data 返回该行的原始内容，用于错误明细里的"原始数据"。
+func (r MaterialImportRow) Data() map[string]string {
+	return map[string]string{
+		"name":  r.Name,
+		"spec":  r.Spec,
+		"unit":  r.Unit,
+		"major": r.MajorName,
+		"minor": r.MinorName,
+	}
+}
+
+// MaterialImportError 是一行的失败原因，Reason 可能包含多条，用中文分号连接。
+type MaterialImportError struct {
+	Row    int               `json:"row"`
+	Data   map[string]string `json:"data"`
+	Reason string            `json:"reason"`
+}
+
+// MaterialImportResult 是一次导入的返回值。校验失败时 SuccessRows 为 0、
+// Errors 非空；成功时 Errors 为空数组（不是 null）。
+type MaterialImportResult struct {
+	TotalRows   int                   `json:"total_rows"`
+	SuccessRows int                   `json:"success_rows"`
+	FailedRows  int                   `json:"failed_rows"`
+	Errors      []MaterialImportError `json:"errors"`
+}
+
+// MaterialImportLog 是一次成功导入的持久化汇总；失败不写记录。
+// 保留失败字段以兼容已有表结构和历史数据，新记录失败数为 0、失败原因为空。
+type MaterialImportLog struct {
+	ID             int64     `json:"id"`
+	OrganizationID int64     `json:"organization_id"`
+	Operator       string    `json:"operator"`
+	FileName       string    `json:"file_name"`
+	TotalRows      int       `json:"total_rows"`
+	SuccessRows    int       `json:"success_rows"`
+	FailedRows     int       `json:"failed_rows"`
+	Status         string    `json:"status"`
+	FailureReason  string    `json:"failure_reason"`
+	CreatedAt      time.Time `json:"created_at"`
+}
+
+const (
+	MaterialImportStatusSuccess = "success"
+	MaterialImportStatusFailed  = "failed"
+)

internal/repository/material.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"sort"
 	"strings"
 
 	"github.com/wmms/wmms/internal/model"
@@ -417,3 +418,180 @@ func (r *MaterialRepo) Restore(organizationID, id int64) error {
 func (r *MaterialRepo) RestoreTx(tx *sql.Tx, organizationID, id int64) error {
 	return restoreMaterialTx(tx, organizationID, id)
 }
+
+// materialImportBatchSize 是批量插入物料时的每批行数。编码已在内存里按小类
+// 顺序分配好，这里只负责把 INSERT 折叠成分批的多值语句，避免两万行逐条往返。
+const materialImportBatchSize = 500
+
+// ImportTx 在调用方事务内为整批物料分配编码并插入，任意一行失败都由调用方回滚。
+// 编码按小类分组生成：组内先对 code_rules 行加锁（按 category_id 升序加锁，
+// 避免两个导入事务以不同顺序持锁而死锁），再跳过库中已占用的号段。
+func (r *MaterialRepo) ImportTx(tx *sql.Tx, organizationID int64, materials []*model.Material) error {
+	if len(materials) == 0 {
+		return nil
+	}
+
+	// 1. 按 category_id 分组，并保证加锁顺序升序。
+	type group struct {
+		categoryID int64
+		items      []*model.Material
+	}
+	index := make(map[int64]int)
+	groups := make([]*group, 0)
+	for _, m := range materials {
+		var categoryID int64
+		if m.CategoryID != nil {
+			categoryID = *m.CategoryID
+		}
+		position, ok := index[categoryID]
+		if !ok {
+			position = len(groups)
+			index[categoryID] = position
+			groups = append(groups, &group{categoryID: categoryID})
+		}
+		groups[position].items = append(groups[position].items, m)
+	}
+	sort.Slice(groups, func(i, j int) bool { return groups[i].categoryID < groups[j].categoryID })
+
+	// 2. 逐组锁规则、分配编码。
+	for _, g := range groups {
+		rule, err := lockCodeRule(tx, organizationID, g.categoryID)
+		if err != nil {
+			return err
+		}
+		if rule == nil {
+			return fmt.Errorf("小类（ID %d）未配置启用的编码规则", g.categoryID)
+		}
+
+		taken, err := loadTakenMaterialCodes(tx, organizationID, rule.Prefix)
+		if err != nil {
+			return err
+		}
+		sequence := rule.NextSequence
+		for _, m := range g.items {
+			code, next, err := nextAvailableMaterialCode(rule, sequence, taken)
+			if err != nil {
+				return err
+			}
+			m.MaterialCode = code
+			taken[code] = struct{}{}
+			sequence = next
+		}
+		if _, err := tx.Exec(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`, sequence, rule.ID); err != nil {
+			return err
+		}
+	}
+
+	// 3. 分批多值插入，每批插入后按编码回查自增 ID。
+	//    多值 INSERT 只返回首个自增 ID 且不保证连续，拿不到逐行 ID，
+	//    而后面写审计日志需要它；按批回查则把 IN 列表控制在 500 项以内。
+	for start := 0; start < len(materials); start += materialImportBatchSize {
+		end := start + materialImportBatchSize
+		if end > len(materials) {
+			end = len(materials)
+		}
+		batch := materials[start:end]
+		query, args := buildMaterialInsertBatch(batch)
+		if _, err := tx.Exec(query, args...); err != nil {
+			if strings.Contains(err.Error(), "Duplicate entry") {
+				return ErrDuplicateMaterialCode
+			}
+			return err
+		}
+		if err := fillMaterialIDs(tx, organizationID, batch); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// loadTakenMaterialCodes 取出本公司该前缀下已存在的全部物料编码，供内存判重。
+// 前缀来自公司自己的编码规则配置，若它含 % 或 _ 只会让 LIKE 多匹配到无关编码，
+// 而那些编码的格式与本规则生成的编码不同、永远不会被 FormatCode 产出，
+// 因此多匹配不会漏判，无需额外转义。
+func loadTakenMaterialCodes(tx *sql.Tx, organizationID int64, prefix string) (map[string]struct{}, error) {
+	rows, err := tx.Query(
+		`SELECT material_code FROM materials WHERE organization_id = ? AND material_code LIKE ?`,
+		organizationID, prefix+"%")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	taken := make(map[string]struct{})
+	for rows.Next() {
+		var code string
+		if err := rows.Scan(&code); err != nil {
+			return nil, err
+		}
+		taken[code] = struct{}{}
+	}
+	return taken, rows.Err()
+}
+
+// nextAvailableMaterialCode 从 start 起找到第一个未占用的编码，返回编码与下一个
+// 待用序号。探测上限沿用单条新增的 probeLimit，防止规则被用尽时无限循环。
+func nextAvailableMaterialCode(rule *model.CodeRule, start int64, taken map[string]struct{}) (string, int64, error) {
+	for sequence := start; sequence < start+probeLimit; sequence++ {
+		code := rule.FormatCode(sequence)
+		if _, occupied := taken[code]; !occupied {
+			return code, sequence + 1, nil
+		}
+	}
+	return "", 0, fmt.Errorf("编码规则 %s 的可用流水号已用尽", rule.Prefix)
+}
+
+// buildMaterialInsertBatch 拼一条多值 INSERT，返回 SQL 与按顺序展开的参数。
+func buildMaterialInsertBatch(batch []*model.Material) (string, []interface{}) {
+	var builder strings.Builder
+	builder.WriteString(`INSERT INTO materials (organization_id, material_code, name, material_image, spec, manufacturer_model, category_id, base_unit_id, unit, status, version) VALUES `)
+	args := make([]interface{}, 0, len(batch)*11)
+	for i, m := range batch {
+		if i > 0 {
+			builder.WriteString(", ")
+		}
+		builder.WriteString("(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
+		args = append(args, m.OrganizationID, m.MaterialCode, m.Name, m.MaterialImage, m.Spec,
+			m.ManufacturerModel, m.CategoryID, m.BaseUnitID, m.Unit, m.Status, m.Version)
+	}
+	return builder.String(), args
+}
+
+// fillMaterialIDs 按物料编码回查自增 ID 并回填。多值插入拿不到逐行 ID，
+// 而后续写 material_logs 需要它。
+func fillMaterialIDs(tx *sql.Tx, organizationID int64, materials []*model.Material) error {
+	codes := make([]interface{}, 0, len(materials))
+	for _, m := range materials {
+		codes = append(codes, m.MaterialCode)
+	}
+	placeholders := strings.TrimSuffix(strings.Repeat("?,", len(codes)), ",")
+	query := `SELECT id, material_code FROM materials WHERE organization_id = ? AND material_code IN (` + placeholders + `)`
+	args := append([]interface{}{organizationID}, codes...)
+
+	rows, err := tx.Query(query, args...)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	ids := make(map[string]int64, len(materials))
+	for rows.Next() {
+		var id int64
+		var code string
+		if err := rows.Scan(&id, &code); err != nil {
+			return err
+		}
+		ids[code] = id
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	for _, m := range materials {
+		id, ok := ids[m.MaterialCode]
+		if !ok {
+			return fmt.Errorf("物料 %s 插入后未能回查到 ID", m.MaterialCode)
+		}
+		m.ID = id
+	}
+	return nil
+}

internal/repository/material_import.go

@@ -0,0 +1,29 @@
+package repository
+
+import (
+	"github.com/wmms/wmms/internal/model"
+	"github.com/wmms/wmms/pkg/database"
+)
+
+// MaterialImportLogRepo 负责 material_import_logs 的写入，表里存的是文件级批次汇总
+// （操作人、文件名、总行数、成功数）。
+//
+// 目前只写不读：没有查询接口也没有页面——逐条物料的溯源走日志页，成功导入的每件物料
+// 都有一条带操作人和「批量导入创建」详情的 CREATE 记录。这张表留作将来做「导入历史」
+// 入口时的数据源，暂时没有使用方。
+type MaterialImportLogRepo struct{}
+
+func NewMaterialImportLogRepo() *MaterialImportLogRepo { return &MaterialImportLogRepo{} }
+
+// Create 写一条成功导入汇总，由服务在事务提交成功后调用。
+// 失败导入不写记录，逐行错误明细只随接口响应返回，不落库。
+func (r *MaterialImportLogRepo) Create(log *model.MaterialImportLog) error {
+	result, err := database.DB.Exec(
+		`INSERT INTO material_import_logs (organization_id, operator, file_name, total_rows, success_rows, failed_rows, status, failure_reason) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+		log.OrganizationID, log.Operator, log.FileName, log.TotalRows, log.SuccessRows, log.FailedRows, log.Status, log.FailureReason)
+	if err != nil {
+		return err
+	}
+	log.ID, err = result.LastInsertId()
+	return err
+}

internal/repository/material_import_test.go

@@ -0,0 +1,201 @@
+package repository
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/wmms/wmms/internal/model"
+	"github.com/wmms/wmms/pkg/database"
+)
+
+const importLockRuleQuery = `SELECT id, organization_id, category_id, prefix, sequence_length, next_sequence FROM code_rules WHERE organization_id = ? AND category_id = ? AND status = 'active' FOR UPDATE`
+
+const insertMaterialBatchStmt = `INSERT INTO materials (organization_id, material_code, name, material_image, spec, manufacturer_model, category_id, base_unit_id, unit, status, version) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?), (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+
+func newImportMock(t *testing.T) (sqlmock.Sqlmock, func()) {
+	t.Helper()
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("open sql mock: %v", err)
+	}
+	previous := database.DB
+	database.DB = db
+	return mock, func() {
+		database.DB = previous
+		db.Close()
+	}
+}
+
+func materialCategoryPtr(id int64) *int64 { return &id }
+
+func TestMaterialRepoImportTxAllocatesCodesAndInsertsOneByOne(t *testing.T) {
+	mock, cleanup := newImportMock(t)
+	defer cleanup()
+
+	mock.ExpectBegin()
+	mock.ExpectQuery(regexp.QuoteMeta(importLockRuleQuery)).WithArgs(int64(1), int64(12)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}).
+			AddRow(5, 1, 12, "A01", 4, 201))
+	// 已占用编码探测：A010201 已被手工录入占用，应跳到 A010202
+	mock.ExpectQuery(regexp.QuoteMeta(`SELECT material_code FROM materials WHERE organization_id = ? AND material_code LIKE ?`)).
+		WithArgs(int64(1), "A01%").
+		WillReturnRows(sqlmock.NewRows([]string{"material_code"}).AddRow("A010201"))
+	mock.ExpectExec(regexp.QuoteMeta(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`)).
+		WithArgs(int64(204), int64(5)).WillReturnResult(sqlmock.NewResult(0, 1))
+	// 两行折叠成一条多值 INSERT
+	mock.ExpectExec(regexp.QuoteMeta(insertMaterialBatchStmt)).
+		WithArgs(
+			int64(1), "A010202", "螺栓", nil, "", nil, int64(12), nil, "个", "active", 1,
+			int64(1), "A010203", "螺母", nil, "", nil, int64(12), nil, "个", "active", 1,
+		).
+		WillReturnResult(sqlmock.NewResult(31, 2))
+	mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, material_code FROM materials WHERE organization_id = ? AND material_code IN (?,?)`)).
+		WithArgs(int64(1), "A010202", "A010203").
+		WillReturnRows(sqlmock.NewRows([]string{"id", "material_code"}).
+			AddRow(31, "A010202").AddRow(32, "A010203"))
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		t.Fatalf("begin: %v", err)
+	}
+	categoryID := int64(12)
+	materials := []*model.Material{
+		{OrganizationID: 1, Name: "螺栓", CategoryID: &categoryID, Unit: "个", Status: "active", Version: 1},
+		{OrganizationID: 1, Name: "螺母", CategoryID: &categoryID, Unit: "个", Status: "active", Version: 1},
+	}
+	if err := NewMaterialRepo().ImportTx(tx, 1, materials); err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if materials[0].MaterialCode != "A010202" || materials[0].ID != 31 {
+		t.Fatalf("first = %+v", materials[0])
+	}
+	if materials[1].MaterialCode != "A010203" || materials[1].ID != 32 {
+		t.Fatalf("second = %+v", materials[1])
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestMaterialRepoImportTxReportsMissingCodeRule(t *testing.T) {
+	mock, cleanup := newImportMock(t)
+	defer cleanup()
+
+	mock.ExpectBegin()
+	mock.ExpectQuery(regexp.QuoteMeta(importLockRuleQuery)).WithArgs(int64(1), int64(12)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}))
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		t.Fatalf("begin: %v", err)
+	}
+	materials := []*model.Material{
+		{OrganizationID: 1, Name: "螺栓", CategoryID: materialCategoryPtr(12), Unit: "个", Status: "active", Version: 1},
+	}
+	err = NewMaterialRepo().ImportTx(tx, 1, materials)
+	if err == nil || !strings.Contains(err.Error(), "编码规则") {
+		t.Fatalf("err = %v, want 编码规则错误", err)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestMaterialRepoImportTxBatchesInsertsOverFiveHundredRows(t *testing.T) {
+	// 501 行 → 两批插入（500 + 1）。插入语句与回查参数很长，这里用子串松匹配，
+	// 只断言"分了两批"以及编码序号按批连续。
+	mock, cleanup := newImportMock(t)
+	defer cleanup()
+
+	mock.ExpectBegin()
+	mock.ExpectQuery(regexp.QuoteMeta(importLockRuleQuery)).WithArgs(int64(1), int64(12)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}).
+			AddRow(5, 1, 12, "A01", 4, 1))
+	mock.ExpectQuery(`SELECT material_code FROM materials`).
+		WillReturnRows(sqlmock.NewRows([]string{"material_code"}))
+	mock.ExpectExec(`UPDATE code_rules SET next_sequence`).WillReturnResult(sqlmock.NewResult(0, 1))
+	mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(1000, 500))
+	mock.ExpectQuery(`SELECT id, material_code FROM materials`).WillReturnRows(idRowsFor(1, 500))
+	mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(1500, 1))
+	mock.ExpectQuery(`SELECT id, material_code FROM materials`).WillReturnRows(idRowsFor(501, 501))
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		t.Fatalf("begin: %v", err)
+	}
+	categoryID := int64(12)
+	materials := make([]*model.Material, 0, 501)
+	for i := 0; i < 501; i++ {
+		materials = append(materials, &model.Material{
+			OrganizationID: 1, Name: "物料", CategoryID: &categoryID, Unit: "个", Status: "active", Version: 1,
+		})
+	}
+	if err := NewMaterialRepo().ImportTx(tx, 1, materials); err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if materials[0].MaterialCode != "A010001" || materials[500].MaterialCode != "A010501" {
+		t.Fatalf("codes = %s ... %s", materials[0].MaterialCode, materials[500].MaterialCode)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// idRowsFor 造出回查语句的返回行：序号 [from, to] 对应的物料 ID 与编码。
+func idRowsFor(from, to int) *sqlmock.Rows {
+	rows := sqlmock.NewRows([]string{"id", "material_code"})
+	for i := from; i <= to; i++ {
+		rows.AddRow(int64(i), fmt.Sprintf("A01%04d", i))
+	}
+	return rows
+}
+
+func TestMaterialLogRepoCreateBatchTx(t *testing.T) {
+	mock, cleanup := newImportMock(t)
+	defer cleanup()
+
+	mock.ExpectBegin()
+	mock.ExpectExec(`INSERT INTO material_logs`).WillReturnResult(sqlmock.NewResult(1, 2))
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		t.Fatalf("begin: %v", err)
+	}
+	logs := []*model.MaterialLog{
+		{OperationType: "CREATE", MaterialID: 31, Operator: "tester", Description: "批量导入"},
+		{OperationType: "CREATE", MaterialID: 32, Operator: "tester", Description: "批量导入"},
+	}
+	if err := NewMaterialLogRepo().CreateBatchTx(tx, logs); err != nil {
+		t.Fatalf("create batch: %v", err)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestMaterialImportLogRepoCreate(t *testing.T) {
+	mock, cleanup := newImportMock(t)
+	defer cleanup()
+
+	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO material_import_logs (organization_id, operator, file_name, total_rows, success_rows, failed_rows, status, failure_reason) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`)).
+		WithArgs(int64(1), "tester", "物料.xlsx", 200, 0, 3, "failed", "共 3 行校验未通过").
+		WillReturnResult(sqlmock.NewResult(9, 1))
+
+	log := &model.MaterialImportLog{
+		OrganizationID: 1, Operator: "tester", FileName: "物料.xlsx",
+		TotalRows: 200, SuccessRows: 0, FailedRows: 3,
+		Status: "failed", FailureReason: "共 3 行校验未通过",
+	}
+	if err := NewMaterialImportLogRepo().Create(log); err != nil {
+		t.Fatalf("create: %v", err)
+	}
+	if log.ID != 9 {
+		t.Fatalf("id = %d, want 9", log.ID)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}

internal/repository/material_log.go

@@ -127,6 +127,26 @@ func (r *MaterialLogRepo) List(organizationID int64, operationType, materialId s
 	return logs, total, nil
 }
 
+// CreateBatchTx 在同一事务里批量写审计日志。导入场景一条物料一条 CREATE 日志，
+// 逐条往返太慢，这里折叠成多值 INSERT。
+func (r *MaterialLogRepo) CreateBatchTx(tx *sql.Tx, logs []*model.MaterialLog) error {
+	if len(logs) == 0 {
+		return nil
+	}
+	var builder strings.Builder
+	builder.WriteString(`INSERT INTO material_logs (operation_type, material_id, old_value, new_value, operator, description) VALUES `)
+	args := make([]interface{}, 0, len(logs)*6)
+	for i, log := range logs {
+		if i > 0 {
+			builder.WriteString(", ")
+		}
+		builder.WriteString("(?, ?, ?, ?, ?, ?)")
+		args = append(args, log.OperationType, log.MaterialID, log.OldValue, log.NewValue, log.Operator, log.Description)
+	}
+	_, err := tx.Exec(builder.String(), args...)
+	return err
+}
+
 // GetByMaterialID 只返回属于当前公司的该物料日志；物料不属于本公司时结果为空。
 func (r *MaterialLogRepo) GetByMaterialID(organizationID, materialID int64) ([]model.MaterialLog, error) {
 	query := `SELECT ml.id, ml.operation_type, ml.material_id, ml.old_value, ml.new_value, ml.operator, ml.description, ml.created_at

internal/service/material.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"errors"
 	"log"
+	"unicode/utf8"
 
 	"github.com/wmms/wmms/internal/model"
 	"github.com/wmms/wmms/internal/repository"
@@ -11,6 +12,12 @@ import (
 
 var ErrInvalidMaterialCategory = errors.New("请选择有效的小类类型")
 
+var ErrMaterialNameTooLong = errors.New("物料名称过长，请小于200字")
+var ErrMaterialSpecTooLong = errors.New("物料规格过长，请小于200字")
+
+const maxMaterialNameLength = 200
+const maxMaterialSpecLength = 200
+
 // ErrInvalidMaterialUnit 表示物料引用的基本单位无效：要么不属于当前公司，
 // 要么已停用。创建以及"改选"单位时都要求是本公司启用中的单位。
 var ErrInvalidMaterialUnit = errors.New("请选择有效的单位")
@@ -65,6 +72,12 @@ func (s *MaterialService) Create(req *model.CreateMaterialRequest, operator stri
 	if organizationID <= 0 {
 		return nil, ErrInvalidOrganizationID
 	}
+	if utf8.RuneCountInString(req.Name) > maxMaterialNameLength {
+		return nil, ErrMaterialNameTooLong
+	}
+	if utf8.RuneCountInString(req.Spec) > maxMaterialSpecLength {
+		return nil, ErrMaterialSpecTooLong
+	}
 	if err := s.validateCategory(req.CategoryID, organizationID); err != nil {
 		return nil, err
 	}
@@ -74,7 +87,7 @@ func (s *MaterialService) Create(req *model.CreateMaterialRequest, operator stri
 	}
 	unit := req.Unit
 	if unit == "" {
-		unit = "pcs"
+		unit = "个"
 	}
 
 	var materialImage *string
@@ -184,6 +197,12 @@ func (s *MaterialService) Update(organizationID, id int64, req *model.UpdateMate
 	if err != nil {
 		return nil, err
 	}
+	if utf8.RuneCountInString(req.Name) > maxMaterialNameLength {
+		return nil, ErrMaterialNameTooLong
+	}
+	if utf8.RuneCountInString(req.Spec) > maxMaterialSpecLength {
+		return nil, ErrMaterialSpecTooLong
+	}
 	if req.CategoryID == nil || *req.CategoryID <= 0 {
 		return nil, ErrInvalidMaterialCategory
 	}

internal/service/material_import.go

@@ -0,0 +1,320 @@
+package service
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/wmms/wmms/internal/model"
+	"github.com/wmms/wmms/internal/repository"
+)
+
+// MaterialImportService 负责一次物料批量导入：解析、逐行校验、事务入库、写记录。
+// 首版只支持新增；校验阶段不生成编码，编码在入库事务里按小类规则分配。
+type MaterialImportService struct {
+	materialRepo *repository.MaterialRepo
+	masterRepo   *repository.MasterDataRepository
+	logRepo      *repository.MaterialLogRepo
+	importRepo   *repository.MaterialImportLogRepo
+}
+
+// materialImportItem 保留导入时匹配到的分类、单位名称，供历史日志展示。
+type materialImportItem struct {
+	*model.Material
+	categoryLabel string
+	unitLabel     string
+}
+
+func NewMaterialImportService() *MaterialImportService {
+	return &MaterialImportService{
+		materialRepo: repository.NewMaterialRepo(),
+		masterRepo:   repository.NewMasterDataRepository(),
+		logRepo:      repository.NewMaterialLogRepo(),
+		importRepo:   repository.NewMaterialImportLogRepo(),
+	}
+}
+
+// Import 处理一次上传。返回值约定：
+//   - 校验未通过：返回 result（含逐行错误）与 nil error，前端按明细展示；
+//   - 模板或文件不合法：返回 nil 与错误，前端提示原因；
+//   - 入库失败：返回 nil 与错误，事务已回滚，整批未落库。
+//
+// 仅在事务提交成功后写一条成功导入记录，失败不保存历史记录。
+func (s *MaterialImportService) Import(organizationID int64, operator, fileName string, r io.Reader) (*model.MaterialImportResult, error) {
+	if organizationID <= 0 {
+		return nil, ErrInvalidOrganizationID
+	}
+
+	rows, err := ParseMaterialImportFile(r)
+	if err != nil {
+		return nil, err
+	}
+
+	materials, importErrors, err := s.validateRows(organizationID, rows)
+	if err != nil {
+		return nil, err
+	}
+	if len(importErrors) > 0 {
+		result := &model.MaterialImportResult{
+			TotalRows:   len(rows),
+			SuccessRows: 0,
+			FailedRows:  len(importErrors),
+			Errors:      importErrors,
+		}
+		return result, nil
+	}
+
+	if err := s.persist(organizationID, operator, materials); err != nil {
+		return nil, err
+	}
+
+	result := &model.MaterialImportResult{
+		TotalRows:   len(rows),
+		SuccessRows: len(materials),
+		FailedRows:  0,
+		Errors:      []model.MaterialImportError{},
+	}
+	s.recordSuccessfulImport(organizationID, operator, fileName, result.TotalRows, result.SuccessRows)
+	return result, nil
+}
+
+// validateRows 逐行校验并组装待插入物料。返回的错误是查询主数据失败这类系统级
+// 错误；逐行的问题以 importErrors 返回，两者互斥。
+func (s *MaterialImportService) validateRows(organizationID int64, rows []model.MaterialImportRow) ([]*materialImportItem, []model.MaterialImportError, error) {
+	categories, err := s.masterRepo.ListCategories(organizationID)
+	if err != nil {
+		return nil, nil, err
+	}
+	units, err := s.masterRepo.ListUnits(organizationID)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	majors := make(map[string]*model.MaterialCategory)
+	minors := make(map[string]*model.MaterialCategory) // key: 大类ID + "\x00" + 小类写法
+	for i := range categories {
+		category := &categories[i]
+		if category.Status != "active" {
+			continue
+		}
+		// 界面上分类一律显示成「编码 名称」（前端 categoryLabel 的拼法），用户整段
+		// 照抄进模板是常事，所以名称之外再登记编码与「编码 名称」两种写法。名称排
+		// 在最前、已有键不覆盖，与单位一样保证同名或同码时结果确定。
+		aliases := []string{category.Name, category.Code}
+		if category.Code != "" {
+			aliases = append(aliases, category.Code+" "+category.Name)
+		}
+		if category.ParentID == nil {
+			for _, alias := range aliases {
+				registerCategoryAlias(majors, normalizeWhitespace(alias), category)
+			}
+			continue
+		}
+		for _, alias := range aliases {
+			registerCategoryAlias(minors, minorCategoryKey(*category.ParentID, normalizeWhitespace(alias)), category)
+		}
+	}
+	unitByName := make(map[string]*model.Unit)
+	unitByCode := make(map[string]*model.Unit)
+	for i := range units {
+		unit := &units[i]
+		if unit.Status != "active" {
+			continue
+		}
+		// 名称和编码各自只认第一条，避免同名单位覆盖成不确定的结果
+		if _, exists := unitByName[unit.Name]; !exists {
+			unitByName[unit.Name] = unit
+		}
+		if _, exists := unitByCode[unit.Code]; !exists {
+			unitByCode[unit.Code] = unit
+		}
+	}
+
+	materials := make([]*materialImportItem, 0, len(rows))
+	importErrors := make([]model.MaterialImportError, 0)
+	// 同一小类的规则只查一次：两万行通常只落在少数几个小类上，
+	// 逐行去查会把一次导入放大成两万次往返。
+	ruleAvailable := make(map[int64]bool)
+
+	for _, row := range rows {
+		reasons := make([]string, 0, 3)
+
+		name := row.Name
+		if name == "" {
+			reasons = append(reasons, "物料名称不能为空")
+		} else if len([]rune(name)) > 200 {
+			reasons = append(reasons, "物料名称超过 200 字")
+		}
+		if len([]rune(row.Spec)) > 200 {
+			reasons = append(reasons, "规格超过 200 字")
+		}
+
+		majorName := normalizeWhitespace(row.MajorName)
+		major := majors[majorName]
+		if majorName == "" {
+			reasons = append(reasons, "大类不能为空")
+		} else if major == nil {
+			reasons = append(reasons, fmt.Sprintf("大类「%s」不存在或已停用，请核对分类名称或编码", row.MajorName))
+		}
+
+		minorName := normalizeWhitespace(row.MinorName)
+		var minor *model.MaterialCategory
+		if minorName == "" {
+			reasons = append(reasons, "小类不能为空")
+		} else if major == nil {
+			// 大类已经报错，小类无法定位，不重复报
+		} else {
+			minor = minors[minorCategoryKey(major.ID, minorName)]
+			if minor == nil {
+				reasons = append(reasons, fmt.Sprintf("小类「%s」在「%s」下不存在或已停用，请核对分类名称或编码", row.MinorName, row.MajorName))
+			}
+		}
+
+		// 单位留空时按单条新增的口径默认「个」；填了则先按名称、再按编码匹配，
+		// 因为像「kg」和「千克」这种编码与名称不一致的单位两种写法都合理。
+		unitName := row.Unit
+		if unitName == "" {
+			unitName = "个"
+		}
+		unit := unitByName[unitName]
+		if unit == nil {
+			unit = unitByCode[unitName]
+		}
+		if unit == nil {
+			if row.Unit == "" {
+				reasons = append(reasons, "本单位缺少默认单位「个」，请在模板中填写单位")
+			} else {
+				reasons = append(reasons, fmt.Sprintf("单位「%s」不存在或已停用", row.Unit))
+			}
+		}
+
+		if minor != nil {
+			available, checked := ruleAvailable[minor.ID]
+			if !checked {
+				rule, err := s.masterRepo.FindActiveCodeRule(organizationID, minor.ID)
+				if err != nil {
+					return nil, nil, err
+				}
+				available = rule != nil
+				ruleAvailable[minor.ID] = available
+			}
+			if !available {
+				reasons = append(reasons, fmt.Sprintf("小类「%s」未配置编码规则", row.MinorName))
+			}
+		}
+
+		if len(reasons) > 0 {
+			importErrors = append(importErrors, model.MaterialImportError{
+				Row:    row.Row,
+				Data:   row.Data(),
+				Reason: strings.Join(reasons, "；"),
+			})
+			continue
+		}
+
+		var baseUnitID *int64
+		if unit != nil {
+			id := unit.ID
+			baseUnitID = &id
+		}
+		categoryID := minor.ID
+		// 模板里填的是名称时也落编码：编码是单位表的唯一键，名称是可变的显示名，
+		// 物料表的 unit 只该有一种写法（与单条新增一致），否则库存页直接显示该
+		// 字段的地方会出现「千克」「kg」并存。
+		materials = append(materials, &materialImportItem{Material: &model.Material{
+			OrganizationID: organizationID,
+			Name:           name,
+			Spec:           row.Spec,
+			CategoryID:     &categoryID,
+			BaseUnitID:     baseUnitID,
+			Unit:           unit.Code,
+			Status:         "active",
+			Version:        1,
+		}, categoryLabel: major.Name + " / " + minor.Name, unitLabel: unit.Name})
+	}
+
+	return materials, importErrors, nil
+}
+
+// persist 在单个事务里插入物料并写审计日志，任一步失败整批回滚。
+func (s *MaterialImportService) persist(organizationID int64, operator string, materials []*materialImportItem) error {
+	tx, err := repository.BeginTx()
+	if err != nil {
+		return err
+	}
+	defer func() { _ = tx.Rollback() }()
+
+	materialRows := make([]*model.Material, 0, len(materials))
+	for _, item := range materials {
+		materialRows = append(materialRows, item.Material)
+	}
+	if err := s.materialRepo.ImportTx(tx, organizationID, materialRows); err != nil {
+		return err
+	}
+
+	logs := make([]*model.MaterialLog, 0, len(materials))
+	for _, material := range materials {
+		newValue, err := json.Marshal(material.Material)
+		if err != nil {
+			return err
+		}
+		spec := material.Spec
+		if spec == "" {
+			spec = "—"
+		}
+		logs = append(logs, &model.MaterialLog{
+			OperationType: "CREATE",
+			MaterialID:    material.ID,
+			NewValue:      string(newValue),
+			Operator:      operator,
+			Description: fmt.Sprintf("批量导入创建：%s（%s）\n物料编码：%s\n名称：%s\n规格：%s\n分类：%s\n单位：%s\n状态：%s",
+				material.Name, material.MaterialCode, material.MaterialCode, material.Name, spec,
+				material.categoryLabel, material.unitLabel, materialStatusLabel(material.Status)),
+		})
+	}
+	if err := s.logRepo.CreateBatchTx(tx, logs); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+// recordSuccessfulImport 仅写成功导入记录。记录失败只影响可追溯性，不应该让已经完成的导入
+// 变成失败，所以这里吞掉错误。
+func (s *MaterialImportService) recordSuccessfulImport(organizationID int64, operator, fileName string, total, success int) {
+	_ = s.importRepo.Create(&model.MaterialImportLog{
+		OrganizationID: organizationID,
+		Operator:       operator,
+		FileName:       fileName,
+		TotalRows:      total,
+		SuccessRows:    success,
+		FailedRows:     0,
+		Status:         model.MaterialImportStatusSuccess,
+		FailureReason:  "",
+	})
+}
+
+func minorCategoryKey(majorID int64, minorName string) string {
+	return fmt.Sprintf("%d\x00%s", majorID, minorName)
+}
+
+// normalizeWhitespace 把文本里的各种空白（半角空格、全角空格 U+3000、不换行空格
+// U+00A0、制表符等）统一压成单个半角空格，并去掉首尾。
+//
+// 界面上的分类显示名是前端拼出来的「编码 + 半角空格 + 名称」，用户照抄进模板时，
+// 那个空格在中文输入法全角模式下会变成 U+3000、从网页复制偶尔带 U+00A0——两串肉眼
+// 一模一样、码点不同，不归一化就成了「浏览器复制的能导入、自己手写的报不存在」。
+func normalizeWhitespace(text string) string {
+	return strings.Join(strings.Fields(text), " ")
+}
+
+// registerCategoryAlias 把一个写法登记进分类索引。空写法忽略；键已被别的分类占用
+// 时不覆盖，保证结果不随分类的遍历顺序变化。
+func registerCategoryAlias(index map[string]*model.MaterialCategory, key string, category *model.MaterialCategory) {
+	if key == "" {
+		return
+	}
+	if _, exists := index[key]; !exists {
+		index[key] = category
+	}
+}

internal/service/material_import_excel.go

@@ -0,0 +1,315 @@
+package service
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/wmms/wmms/internal/model"
+	"github.com/xuri/excelize/v2"
+)
+
+const (
+	// MaterialImportSheetData 是填写数据的表名，「物料数据」。
+	MaterialImportSheetData = "物料数据"
+	// MaterialImportSheetGuide 是填写说明的表名。
+	MaterialImportSheetGuide = "填写说明"
+	// MaterialImportMaxRows 是数据区最大行数（不含表头）。
+	MaterialImportMaxRows = 10000
+	// MaterialImportMaxBytes 是上传文件大小上限。
+	MaterialImportMaxBytes = 1 << 20
+)
+
+var (
+	// ErrImportTemplateInvalid 表示上传的文件不是本功能的模板。
+	ErrImportTemplateInvalid = errors.New("模板格式不正确，请重新下载最新模板")
+	// ErrImportTooManyRows 表示数据行数超出上限。
+	ErrImportTooManyRows = fmt.Errorf("导入行数超过 %d 行上限", MaterialImportMaxRows)
+)
+
+// materialImportHeaders 是生成模板时的列顺序（含选填列）。
+var materialImportHeaders = []string{"物料名称", "规格", "单位", "大类", "小类"}
+
+// materialImportRequiredHeaders 是表头里必须存在的列；缺任何一列都判定为
+// 模板不合法。规格和单位是选填，用户删掉这两个空列是合理操作，不拦。
+var materialImportRequiredHeaders = []string{"物料名称", "大类", "小类"}
+
+// BuildMaterialImportTemplate 生成说明在前、空白数据表在后的导入模板。
+func BuildMaterialImportTemplate() ([]byte, error) {
+	f := excelize.NewFile()
+	defer f.Close()
+	if err := f.SetSheetName("Sheet1", MaterialImportSheetGuide); err != nil {
+		return nil, err
+	}
+	if _, err := f.NewSheet(MaterialImportSheetData); err != nil {
+		return nil, err
+	}
+	f.SetActiveSheet(0)
+
+	rules := [][]string{
+		{"物料名称", "必填", "内六角螺栓", "不超过 200 字，不可留空。"},
+		{"规格", "选填", "M8×30", "不超过 200 字，可留空；含前导零的规格按文本填写。"},
+		{"单位", "选填", "个 / kg", "填写当前组织已启用的单位名称或编码；留空默认「个」。"},
+		{"大类", "必填", "机械结构类", "填写当前组织已启用的大类名称、编码或「编码 名称」。"},
+		{"小类", "必填", "标准件", "填写所选大类下的小类名称、编码或「编码 名称」；小类须配置启用的编码规则。"},
+	}
+	sections := map[int]string{1: "物料批量导入 · 填写说明", 4: "一、字段填写规则", 12: "二、填写与上传步骤", 18: "三、导入注意事项", 25: "四、填写示例（仅供参考）"}
+	notes := map[int]string{
+		2:  "先阅读本页，再切换到第二个工作表「物料数据」填写。",
+		13: "1. 确认页面当前组织，核对该组织的分类、单位及小类编码规则。",
+		14: "2. 在「物料数据」从第 2 行开始填写；第 1 行表头及工作表名称请保留。",
+		15: "3. 保存为 .xlsx 文件，回到「物料」页面点击「批量导入」并选择文件。",
+		16: "4. 有错误时查看行号和原因，可导出错误明细；修正原 .xlsx 后重新上传。",
+		19: "文件限制：仅支持 .xlsx，大小不超过 1MB；非空数据最多 10000 行，表头和全空行不计数。",
+		20: "整批校验：任意一行校验失败，本次所有物料均不导入；请全部修正后重传。",
+		21: "编码与库存：物料编码由系统生成，无需填写；仅新增物料，不增加库存，也不更新已有物料。",
+		22: "重复导入：同名同规格不会自动去重；成功后重复上传同一文件，会再次新增物料。",
+		23: "默认单位：单位留空时使用「个」；当前组织未启用「个」时，请填写其他有效单位。",
+		30: "示例只展示写法，请替换为当前组织实际启用的分类与单位；示例不在数据页，不会自动导入。",
+	}
+	for row, text := range sections {
+		if err := f.MergeCell(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), fmt.Sprintf("E%d", row)); err != nil {
+			return nil, err
+		}
+		if err := f.SetCellValue(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), text); err != nil {
+			return nil, err
+		}
+	}
+	for row, text := range notes {
+		if err := f.MergeCell(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), fmt.Sprintf("E%d", row)); err != nil {
+			return nil, err
+		}
+		if err := f.SetCellValue(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), text); err != nil {
+			return nil, err
+		}
+	}
+	guideRows := append([][]string{{"字段", "是否必填", "示例", "填写规则"}}, rules...)
+	for i, row := range guideRows {
+		for j, text := range row {
+			cell, _ := excelize.CoordinatesToCellName(j+1, i+5)
+			if err := f.SetCellValue(MaterialImportSheetGuide, cell, text); err != nil {
+				return nil, err
+			}
+		}
+		if err := f.MergeCell(MaterialImportSheetGuide, fmt.Sprintf("D%d", i+5), fmt.Sprintf("E%d", i+5)); err != nil {
+			return nil, err
+		}
+	}
+	sampleRows := [][]string{materialImportHeaders, {"内六角螺栓", "M8×30", "个", "机械结构类", "标准件"}, {"六角螺母", "M8", "个", "机械结构类", "标准件"}}
+	for i, row := range sampleRows {
+		for j, text := range row {
+			cell, _ := excelize.CoordinatesToCellName(j+1, i+26)
+			if err := f.SetCellValue(MaterialImportSheetGuide, cell, text); err != nil {
+				return nil, err
+			}
+		}
+	}
+	for i, header := range materialImportHeaders {
+		cell, _ := excelize.CoordinatesToCellName(i+1, 1)
+		if err := f.SetCellValue(MaterialImportSheetData, cell, header); err != nil {
+			return nil, err
+		}
+	}
+	if err := styleMaterialImportTemplate(f); err != nil {
+		return nil, err
+	}
+	buf, err := f.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+func styleMaterialImportTemplate(f *excelize.File) error {
+	styles := []excelize.Style{
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Color: "334155"}, Alignment: &excelize.Alignment{Vertical: "center", WrapText: true}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 20, Bold: true, Color: "FFFFFF"}, Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"17365D"}}, Alignment: &excelize.Alignment{Vertical: "center"}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 12, Bold: true, Color: "17365D"}, Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E8EFF7"}}, Alignment: &excelize.Alignment{Vertical: "center"}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Bold: true, Color: "FFFFFF"}, Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"345D87"}}, Alignment: &excelize.Alignment{Vertical: "center", Horizontal: "left", WrapText: true}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Color: "1D4ED8"}, NumFmt: 49, Alignment: &excelize.Alignment{Vertical: "center", Horizontal: "left", WrapText: true}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Bold: true, Italic: true, Color: "334155"}, Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"FFC000"}}, Alignment: &excelize.Alignment{Vertical: "center", WrapText: true}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Bold: true, Color: "334155"}, Alignment: &excelize.Alignment{Vertical: "center", WrapText: true}},
+		{Font: &excelize.Font{Family: "Microsoft YaHei", Size: 11, Bold: true, Color: "FF0000"}, Alignment: &excelize.Alignment{Vertical: "center", WrapText: true}},
+	}
+	ids := make([]int, len(styles))
+	for i := range styles {
+		id, err := f.NewStyle(&styles[i])
+		if err != nil {
+			return err
+		}
+		ids[i] = id
+	}
+	if err := f.SetCellStyle(MaterialImportSheetGuide, "A1", "E30", ids[0]); err != nil {
+		return err
+	}
+	if err := f.SetCellStyle(MaterialImportSheetGuide, "A2", "E2", ids[5]); err != nil {
+		return err
+	}
+	if err := f.SetCellStyle(MaterialImportSheetGuide, "A1", "E1", ids[1]); err != nil {
+		return err
+	}
+	for _, row := range []int{4, 12, 18, 25} {
+		if err := f.SetCellStyle(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), fmt.Sprintf("E%d", row), ids[2]); err != nil {
+			return err
+		}
+	}
+	for _, row := range []int{5, 26} {
+		if err := f.SetCellStyle(MaterialImportSheetGuide, fmt.Sprintf("A%d", row), fmt.Sprintf("E%d", row), ids[3]); err != nil {
+			return err
+		}
+	}
+	if err := f.SetCellStyle(MaterialImportSheetGuide, "A6", "A10", ids[6]); err != nil {
+		return err
+	}
+	for _, cell := range []string{"B6", "B9", "B10"} {
+		if err := f.SetCellStyle(MaterialImportSheetGuide, cell, cell, ids[7]); err != nil {
+			return err
+		}
+	}
+	for i, width := range []float64{20, 12, 24, 34} {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := f.SetColWidth(MaterialImportSheetGuide, col, col, width); err != nil {
+			return err
+		}
+	}
+	for row := 1; row <= 30; row++ {
+		height := 30.0
+		if row == 1 {
+			height = 42
+		}
+		if row >= 6 && row <= 10 {
+			height = 54
+		}
+		if row >= 19 && row <= 23 || row == 30 {
+			height = 42
+		}
+		if err := f.SetRowHeight(MaterialImportSheetGuide, row, height); err != nil {
+			return err
+		}
+	}
+	if err := f.SetColStyle(MaterialImportSheetData, "A:E", ids[4]); err != nil {
+		return err
+	}
+	if err := f.SetCellStyle(MaterialImportSheetData, "A1", "E1", ids[3]); err != nil {
+		return err
+	}
+	if err := f.SetRowHeight(MaterialImportSheetData, 1, 32); err != nil {
+		return err
+	}
+	for i, width := range []float64{34, 28, 16, 26} {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := f.SetColWidth(MaterialImportSheetData, col, col, width); err != nil {
+			return err
+		}
+	}
+	if err := f.SetColWidth(MaterialImportSheetData, "E", "E", 13); err != nil {
+		return err
+	}
+	return f.SetPanes(MaterialImportSheetData, &excelize.Panes{Freeze: true, YSplit: 1, TopLeftCell: "A2", ActivePane: "bottomLeft"})
+}
+
+// ParseMaterialImportFile 解析上传的 xlsx，返回带 Excel 行号的数据行。
+// 列按表头名定位：列顺序可调、选填列可整列删掉、多余列忽略；只有缺少必填列
+// 或缺少「物料数据」表时才判定模板不合法。
+// 整行为空的行会被跳过；只要任一列有内容就保留，交给后续校验报错。
+func ParseMaterialImportFile(r io.Reader) ([]model.MaterialImportRow, error) {
+	// 较大的工作表 XML 使用临时文件，避免压缩后很小的工作簿整表驻留内存。
+	f, err := excelize.OpenReader(r, excelize.Options{UnzipXMLSizeLimit: 1 << 20})
+	if err != nil {
+		if f != nil {
+			_ = f.Close()
+		}
+		return nil, ErrImportTemplateInvalid
+	}
+	defer f.Close()
+
+	idx, err := f.GetSheetIndex(MaterialImportSheetData)
+	if err != nil || idx < 0 {
+		return nil, ErrImportTemplateInvalid
+	}
+
+	iterator, err := f.Rows(MaterialImportSheetData)
+	if err != nil {
+		return nil, err
+	}
+	defer iterator.Close()
+	if !iterator.Next() {
+		return nil, ErrImportTemplateInvalid
+	}
+	header, err := iterator.Columns()
+	if err != nil {
+		return nil, err
+	}
+	columns := materialImportColumnIndex(header)
+	for _, required := range materialImportRequiredHeaders {
+		if _, ok := columns[required]; !ok {
+			return nil, ErrImportTemplateInvalid
+		}
+	}
+
+	rows := make([]model.MaterialImportRow, 0, 256)
+	rowNumber := 1
+	for iterator.Next() {
+		rowNumber++
+		raw, err := iterator.Columns()
+		if err != nil {
+			return nil, err
+		}
+		row := model.MaterialImportRow{
+			Row:       rowNumber, // 包含被跳过的空行，保留真实 Excel 行号。
+			Name:      materialImportColumnValue(raw, columns, "物料名称"),
+			Spec:      materialImportColumnValue(raw, columns, "规格"),
+			Unit:      materialImportColumnValue(raw, columns, "单位"),
+			MajorName: materialImportColumnValue(raw, columns, "大类"),
+			MinorName: materialImportColumnValue(raw, columns, "小类"),
+		}
+		if row.Name == "" && row.Spec == "" && row.Unit == "" && row.MajorName == "" && row.MinorName == "" {
+			continue
+		}
+		if len(rows) == MaterialImportMaxRows {
+			return nil, ErrImportTooManyRows
+		}
+		rows = append(rows, row)
+	}
+
+	if err := iterator.Error(); err != nil {
+		return nil, err
+	}
+	if err := iterator.Close(); err != nil {
+		return nil, err
+	}
+	return rows, nil
+}
+
+// materialImportColumnIndex 把表头行转成「列名 → 列号」。允许用户在表头里加
+// 首尾空格、末尾加 * 标记必填；不认识的列忽略，重复列名取第一列。
+func materialImportColumnIndex(header []string) map[string]int {
+	index := make(map[string]int, len(header))
+	for i, cell := range header {
+		name := strings.TrimSpace(strings.TrimSuffix(strings.TrimSpace(cell), "*"))
+		if name == "" {
+			continue
+		}
+		if _, exists := index[name]; !exists {
+			index[name] = i
+		}
+	}
+	return index
+}
+
+// materialImportColumnValue 按列名取值；选填列被整列删掉时返回空串。
+func materialImportColumnValue(row []string, columns map[string]int, name string) string {
+	index, ok := columns[name]
+	if !ok {
+		return ""
+	}
+	return materialImportCell(row, index)
+}
+
+func materialImportCell(row []string, index int) string {
+	if index >= len(row) {
+		return ""
+	}
+	return strings.TrimSpace(row[index])
+}

internal/service/material_import_excel_test.go

@@ -0,0 +1,275 @@
+package service
+
+import (
+	"archive/zip"
+	"bytes"
+	"errors"
+	"io"
+	"strings"
+	"testing"
+
+	"github.com/xuri/excelize/v2"
+)
+
+func TestParseMaterialImportFileStopsBeforeRowsBeyondLimit(t *testing.T) {
+	dataRows := make([][]string, MaterialImportMaxRows+1)
+	for i := range dataRows {
+		dataRows[i] = []string{"物料", "", "", "机械结构类", "标准件"}
+	}
+	data := buildTestWorkbook(t, dataRows)
+	reader, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	var changed bytes.Buffer
+	writer := zip.NewWriter(&changed)
+	for _, entry := range reader.File {
+		source, err := entry.Open()
+		if err != nil {
+			t.Fatal(err)
+		}
+		content, err := io.ReadAll(source)
+		source.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if entry.Name == "xl/worksheets/sheet1.xml" {
+			// 超限行之后故意放非法 XML，证明解析器不会再读取后续行。
+			content = bytes.Replace(content, []byte("</sheetData>"),
+				[]byte(`<row r="20003"><c></row></sheetData>`), 1)
+		}
+		target, err := writer.Create(entry.Name)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := target.Write(content); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatal(err)
+	}
+	rows, err := ParseMaterialImportFile(bytes.NewReader(changed.Bytes()))
+	if !errors.Is(err, ErrImportTooManyRows) || rows != nil {
+		t.Fatalf("rows=%d, err=%v, want immediate ErrImportTooManyRows", len(rows), err)
+	}
+}
+
+func TestParseMaterialImportFileAcceptsRowLimit(t *testing.T) {
+	dataRows := make([][]string, MaterialImportMaxRows)
+	for i := range dataRows {
+		dataRows[i] = []string{"物料", "", "", "机械结构类", "标准件"}
+	}
+	rows, err := ParseMaterialImportFile(bytes.NewReader(buildTestWorkbook(t, dataRows)))
+	if err != nil || len(rows) != MaterialImportMaxRows {
+		t.Fatalf("rows=%d, err=%v", len(rows), err)
+	}
+}
+
+func TestParseMaterialImportFileReadsRowsWithExcelRowNumbers(t *testing.T) {
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "机械结构类", "标准件"},
+		{"", "", "", "", ""}, // 整行空，应被跳过
+		{"急停按钮", "XB2", "个", "电气元器件类", "成品件"},
+	})
+
+	rows, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(rows) != 2 {
+		t.Fatalf("rows = %d, want 2", len(rows))
+	}
+	if rows[0].Row != 2 || rows[0].Name != "内六角螺栓" || rows[0].MinorName != "标准件" {
+		t.Fatalf("first row = %+v", rows[0])
+	}
+	// 第 3 行是空行被跳过，所以第二条数据是 Excel 第 4 行
+	if rows[1].Row != 4 || rows[1].Name != "急停按钮" {
+		t.Fatalf("second row = %+v", rows[1])
+	}
+}
+
+func TestParseMaterialImportFileKeepsRowsWithAnyContent(t *testing.T) {
+	// 名称填了、其余为空：不是空行，必须保留交给校验去报错
+	data := buildTestWorkbook(t, [][]string{
+		{"只有名称", "", "", "", ""},
+	})
+	rows, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(rows) != 1 || rows[0].Name != "只有名称" {
+		t.Fatalf("rows = %+v", rows)
+	}
+}
+
+func TestParseMaterialImportFileRejectsMissingRequiredColumn(t *testing.T) {
+	// 只有「物料名称」和「规格」，缺必填的大类、小类
+	data := buildTestWorkbookWithHeaders(t, []string{"物料名称", "规格"}, [][]string{
+		{"内六角螺栓", "M8x30"},
+	})
+
+	_, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if !errors.Is(err, ErrImportTemplateInvalid) {
+		t.Fatalf("err = %v, want ErrImportTemplateInvalid", err)
+	}
+}
+
+func TestParseMaterialImportFileAcceptsMissingOptionalColumnsAndReorderedColumns(t *testing.T) {
+	// 删掉「规格」，并把「单位」挪到「物料名称」前面
+	headers := []string{"单位", "物料名称", "大类", "小类"}
+	data := buildTestWorkbookWithHeaders(t, headers, [][]string{
+		{"个", "内六角螺栓", "机械结构类", "标准件"},
+	})
+
+	rows, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("rows = %d, want 1", len(rows))
+	}
+	if rows[0].Name != "内六角螺栓" || rows[0].Unit != "个" || rows[0].MinorName != "标准件" {
+		t.Fatalf("row = %+v", rows[0])
+	}
+	if rows[0].Spec != "" {
+		t.Fatalf("缺失的规格列应解析为空，得到 %q", rows[0].Spec)
+	}
+}
+
+func TestParseMaterialImportFileIgnoresUnknownColumns(t *testing.T) {
+	headers := []string{"物料名称", "备注", "大类", "小类"}
+	data := buildTestWorkbookWithHeaders(t, headers, [][]string{
+		{"内六角螺栓", "与导入无关", "机械结构类", "标准件"},
+	})
+
+	rows, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(rows) != 1 || rows[0].Name != "内六角螺栓" {
+		t.Fatalf("rows = %+v", rows)
+	}
+}
+
+func TestParseMaterialImportFileRejectsTooManyRows(t *testing.T) {
+	rows := make([][]string, 0, MaterialImportMaxRows+1)
+	for i := 0; i < MaterialImportMaxRows+1; i++ {
+		rows = append(rows, []string{"物料", "", "", "机械结构类", "标准件"})
+	}
+	data := buildTestWorkbook(t, rows)
+
+	_, err := ParseMaterialImportFile(bytes.NewReader(data))
+	if !errors.Is(err, ErrImportTooManyRows) {
+		t.Fatalf("err = %v, want ErrImportTooManyRows", err)
+	}
+}
+
+func TestBuildMaterialImportTemplateRoundTrips(t *testing.T) {
+	data, err := BuildMaterialImportTemplate()
+	if err != nil {
+		t.Fatalf("build template: %v", err)
+	}
+	f, err := excelize.OpenReader(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("open template: %v", err)
+	}
+	defer f.Close()
+	sheets := f.GetSheetList()
+	if len(sheets) != 2 || sheets[0] != MaterialImportSheetGuide || sheets[1] != MaterialImportSheetData {
+		t.Fatalf("工作表顺序 = %v，期望先说明后填表", sheets)
+	}
+	if f.GetActiveSheetIndex() != 0 {
+		t.Fatal("打开模板时应先显示填写说明")
+	}
+	guide, err := f.GetRows(MaterialImportSheetGuide)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var guideText strings.Builder
+	for _, row := range guide {
+		guideText.WriteString(strings.Join(row, " "))
+	}
+	for _, rule := range []string{"编码 名称", "1MB", "10000", "整批", "重复", "库存", "第 2 行"} {
+		if !strings.Contains(guideText.String(), rule) {
+			t.Fatalf("填写说明缺少规则：%s", rule)
+		}
+	}
+	styleAt := func(sheet, cell string) *excelize.Style {
+		t.Helper()
+		styleID, err := f.GetCellStyle(sheet, cell)
+		if err != nil {
+			t.Fatalf("读取 %s!%s 样式: %v", sheet, cell, err)
+		}
+		style, err := f.GetStyle(styleID)
+		if err != nil {
+			t.Fatalf("解析 %s!%s 样式: %v", sheet, cell, err)
+		}
+		return style
+	}
+	intro := styleAt(MaterialImportSheetGuide, "A2")
+	if intro.Font == nil || !intro.Font.Bold || !intro.Font.Italic || intro.Fill.Color[0] != "FFC000" || intro.Alignment == nil || intro.Alignment.Horizontal != "" || intro.Alignment.Vertical != "center" {
+		t.Fatalf("说明提示样式不匹配附件模板: %+v", intro)
+	}
+	field := styleAt(MaterialImportSheetGuide, "A6")
+	if field.Font == nil || !field.Font.Bold {
+		t.Fatalf("字段名应加粗: %+v", field)
+	}
+	required := styleAt(MaterialImportSheetGuide, "B6")
+	if required.Font == nil || !required.Font.Bold || required.Font.Color != "FF0000" {
+		t.Fatalf("必填标记应为红色粗体: %+v", required)
+	}
+	lastColumnWidth, err := f.GetColWidth(MaterialImportSheetData, "E")
+	if err != nil || lastColumnWidth != 13 {
+		t.Fatalf("物料数据 E 列宽 = %v, err = %v, want 13", lastColumnWidth, err)
+	}
+
+	if idx, _ := f.GetSheetIndex(MaterialImportSheetData); idx < 0 {
+		t.Fatal("模板缺少「物料数据」工作表")
+	}
+	if idx, _ := f.GetSheetIndex(MaterialImportSheetGuide); idx < 0 {
+		t.Fatal("模板缺少「填写说明」工作表")
+	}
+	headers, err := f.GetRows(MaterialImportSheetData)
+	if err != nil {
+		t.Fatalf("read rows: %v", err)
+	}
+	if len(headers) == 0 || headers[0][0] != "物料名称" || headers[0][4] != "小类" {
+		t.Fatalf("表头 = %v", headers)
+	}
+	// 模板必须能被自己的解析器接受（表头一致）
+	if rows, err := ParseMaterialImportFile(bytes.NewReader(data)); err != nil {
+		t.Fatalf("模板无法被解析器接受: %v", err)
+	} else if len(rows) != 0 {
+		t.Fatal("数据页不应包含会被实际导入的示例物料")
+	}
+}
+
+// buildTestWorkbook 用标准表头 + 给定数据行构造一个 xlsx 字节流。
+func buildTestWorkbook(t *testing.T, dataRows [][]string) []byte {
+	t.Helper()
+	return buildTestWorkbookWithHeaders(t, materialImportHeaders, dataRows)
+}
+
+// buildTestWorkbookWithHeaders 允许指定表头，用来覆盖缺列、乱序、多余列的解析分支。
+func buildTestWorkbookWithHeaders(t *testing.T, headers []string, dataRows [][]string) []byte {
+	t.Helper()
+	f := excelize.NewFile()
+	defer f.Close()
+	f.SetSheetName("Sheet1", MaterialImportSheetData)
+	for i, header := range headers {
+		cell, _ := excelize.CoordinatesToCellName(i+1, 1)
+		f.SetCellValue(MaterialImportSheetData, cell, header)
+	}
+	for r, row := range dataRows {
+		for c, value := range row {
+			cell, _ := excelize.CoordinatesToCellName(c+1, r+2)
+			f.SetCellValue(MaterialImportSheetData, cell, value)
+		}
+	}
+	buf, err := f.WriteToBuffer()
+	if err != nil {
+		t.Fatalf("write workbook: %v", err)
+	}
+	return buf.Bytes()
+}

internal/service/material_import_test.go

@@ -0,0 +1,421 @@
+package service
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"regexp"
+	"strings"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/wmms/wmms/internal/model"
+	"github.com/wmms/wmms/pkg/database"
+)
+
+const importCategoryQuery = `SELECT id, organization_id, code, name, description, parent_id, status FROM material_categories WHERE organization_id = ? ORDER BY code`
+const importUnitQuery = `SELECT id, organization_id, code, name, precision_scale, status FROM units WHERE organization_id = ? ORDER BY code`
+const importRuleQuery = `SELECT id, organization_id, category_id, prefix, sequence_length, next_sequence, status FROM code_rules WHERE organization_id = ? AND category_id = ? AND status = 'active'`
+
+func newImportServiceMock(t *testing.T) (sqlmock.Sqlmock, func()) {
+	t.Helper()
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("open sql mock: %v", err)
+	}
+	previous := database.DB
+	database.DB = db
+	return mock, func() {
+		database.DB = previous
+		db.Close()
+	}
+}
+
+func expectImportMasterData(mock sqlmock.Sqlmock, withRule bool) {
+	mock.ExpectQuery(regexp.QuoteMeta(importCategoryQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "description", "parent_id", "status"}).
+			AddRow(3, 1, "A", "机械结构类", "", nil, "active").
+			AddRow(12, 1, "A01", "标准件", "", 3, "active"))
+	mock.ExpectQuery(regexp.QuoteMeta(importUnitQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "precision_scale", "status"}).
+			AddRow(1, 1, "个", "个", 0, "active"))
+	if withRule {
+		mock.ExpectQuery(regexp.QuoteMeta(importRuleQuery)).WithArgs(int64(1), int64(12)).
+			WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence", "status"}).
+				AddRow(5, 1, 12, "A01", 4, 201, "active"))
+	} else {
+		mock.ExpectQuery(regexp.QuoteMeta(importRuleQuery)).WithArgs(int64(1), int64(12)).
+			WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}))
+	}
+}
+
+// expectImportLog 校验成功导入的汇总记录。
+func expectImportLog(mock sqlmock.Sqlmock, fileName, status string, total, success, failed int, reason interface{}) {
+	// 行数显式转 int64：database/sql 会把实参归一成 driver.Value（int→int64），
+	// sqlmock 按类型比对，传 Go int 匹配不上。
+	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO material_import_logs (organization_id, operator, file_name, total_rows, success_rows, failed_rows, status, failure_reason) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`)).
+		WithArgs(int64(1), "tester", fileName, int64(total), int64(success), int64(failed), status, reason).
+		WillReturnResult(sqlmock.NewResult(9, 1))
+}
+
+// 记录写入错误会被服务吞掉，单纯不设置 SQL 期望无法证明没有尝试写入。
+// 设一个最后的写入期望，并确认只有它未被消费，且前面的业务期望全部完成。
+func expectNoImportLog(t *testing.T, mock sqlmock.Sqlmock) func() {
+	t.Helper()
+	unexpected := mock.ExpectExec(`INSERT INTO material_import_logs`).WillReturnResult(sqlmock.NewResult(9, 1))
+	return func() {
+		t.Helper()
+		err := mock.ExpectationsWereMet()
+		if err == nil {
+			t.Fatal("失败导入不应写入历史记录")
+		}
+		want := "there is a remaining expectation which was not matched: " + unexpected.String()
+		if err.Error() != want {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestMaterialImportServiceDoesNotRecordMasterDataFailure(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+	queryErr := errors.New("主数据查询失败")
+	mock.ExpectQuery(regexp.QuoteMeta(importCategoryQuery)).WithArgs(int64(1)).WillReturnError(queryErr)
+	defer expectNoImportLog(t, mock)()
+	data := buildTestWorkbook(t, [][]string{
+		{"螺栓", "", "个", "机械结构类", "标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if !errors.Is(err, queryErr) || result != nil {
+		t.Fatalf("result = %+v, err = %v", result, err)
+	}
+}
+
+func TestMaterialImportServiceReportsRowErrorsWithoutWritingMaterials(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, true)
+	defer expectNoImportLog(t, mock)()
+
+	data := buildTestWorkbook(t, [][]string{
+		{"", "", "", "机械结构类", "标准件"},    // 名称缺失
+		{"螺栓", "", "吨", "不存在的类", "标准件"}, // 大类不存在
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if result.SuccessRows != 0 || result.FailedRows != 2 || len(result.Errors) != 2 {
+		t.Fatalf("result = %+v", result)
+	}
+	if result.Errors[0].Row != 2 || !strings.Contains(result.Errors[0].Reason, "物料名称") {
+		t.Fatalf("first error = %+v", result.Errors[0])
+	}
+	if result.Errors[1].Row != 3 || !strings.Contains(result.Errors[1].Reason, "大类") {
+		t.Fatalf("second error = %+v", result.Errors[1])
+	}
+}
+
+func TestMaterialImportServiceReportsMissingCodeRule(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, false)
+	defer expectNoImportLog(t, mock)()
+
+	data := buildTestWorkbook(t, [][]string{
+		{"螺栓", "", "个", "机械结构类", "标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if result.FailedRows != 1 || !strings.Contains(result.Errors[0].Reason, "编码规则") {
+		t.Fatalf("result = %+v", result)
+	}
+}
+
+func TestMaterialImportServiceRejectsInvalidTemplate(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	defer expectNoImportLog(t, mock)()
+
+	result, err := NewMaterialImportService().Import(1, "tester", "错的.xlsx", strings.NewReader("not an xlsx"))
+	if err == nil {
+		t.Fatal("期望返回模板错误")
+	}
+	if result != nil {
+		t.Fatalf("result = %+v, want nil", result)
+	}
+}
+
+func TestMaterialImportServiceImportsWhenAllRowsValid(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, true)
+	// 事务内：锁规则 → 取已占用编码 → 推进序号 → 插入 → 回查 ID
+	// ImportTx 先把整批编码分配完并推进 code_rules，再分批插入。
+	expectImportPersist(mock, "A010201")
+	expectImportLog(mock, "物料.xlsx", "success", 1, 1, 0, "")
+
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "机械结构类", "标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if result.SuccessRows != 1 || result.FailedRows != 0 || len(result.Errors) != 0 {
+		t.Fatalf("result = %+v", result)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestMaterialImportServiceRollsBackWhenInsertFails(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, true)
+	mock.ExpectBegin()
+	mock.ExpectQuery(`FOR UPDATE`).WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}).
+		AddRow(5, 1, 12, "A01", 4, 201))
+	mock.ExpectQuery(`SELECT material_code FROM materials`).WillReturnRows(sqlmock.NewRows([]string{"material_code"}))
+	mock.ExpectExec(regexp.QuoteMeta(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`)).WillReturnResult(sqlmock.NewResult(0, 1))
+	mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(0, 0))
+	// 插入后回查不到 ID（模拟插入未真正落库），persist 据此报错并回滚
+	mock.ExpectQuery(`SELECT id, material_code FROM materials`).WillReturnRows(sqlmock.NewRows([]string{"id", "material_code"}))
+	mock.ExpectRollback()
+	defer expectNoImportLog(t, mock)()
+
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "机械结构类", "标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err == nil {
+		t.Fatal("期望入库失败")
+	}
+	if result != nil {
+		t.Fatalf("result = %+v, want nil", result)
+	}
+}
+
+// expectImportPersist 描述一次成功入库的事务序列：锁规则 → 取已占用编码 → 推进序号
+// → 插入 → 回查 ID → 写审计日志 → 提交。code 是本次分配给物料的编码。
+type importSnapshot struct {
+	code string
+}
+
+func (expected importSnapshot) Match(value driver.Value) bool {
+	text, ok := value.(string)
+	if !ok {
+		return false
+	}
+	var snapshot struct {
+		ID             int64  `json:"id"`
+		OrganizationID int64  `json:"organization_id"`
+		MaterialCode   string `json:"material_code"`
+		Name           string `json:"name"`
+		Spec           string `json:"spec"`
+		CategoryID     int64  `json:"category_id"`
+		BaseUnitID     int64  `json:"base_unit_id"`
+		Unit           string `json:"unit"`
+		Status         string `json:"status"`
+		Version        int    `json:"version"`
+	}
+	return json.Unmarshal([]byte(text), &snapshot) == nil &&
+		snapshot.ID == 31 && snapshot.OrganizationID == 1 &&
+		snapshot.MaterialCode == expected.code && snapshot.Name == "内六角螺栓" &&
+		snapshot.Spec == "M8x30" && snapshot.CategoryID == 12 && snapshot.BaseUnitID == 1 &&
+		snapshot.Unit == "个" && snapshot.Status == "active" && snapshot.Version == 1
+}
+
+func expectImportPersist(mock sqlmock.Sqlmock, code string) {
+	mock.ExpectBegin()
+	mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, organization_id, category_id, prefix, sequence_length, next_sequence FROM code_rules WHERE organization_id = ? AND category_id = ? AND status = 'active' FOR UPDATE`)).
+		WithArgs(int64(1), int64(12)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}).
+			AddRow(5, 1, 12, "A01", 4, 201))
+	mock.ExpectQuery(`SELECT material_code FROM materials WHERE organization_id = \? AND material_code LIKE \?`).
+		WithArgs(int64(1), "A01%").
+		WillReturnRows(sqlmock.NewRows([]string{"material_code"}))
+	mock.ExpectExec(regexp.QuoteMeta(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`)).
+		WithArgs(int64(202), int64(5)).WillReturnResult(sqlmock.NewResult(0, 1))
+	mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(31, 1))
+	mock.ExpectQuery(`SELECT id, material_code FROM materials WHERE organization_id = \? AND material_code IN \(\?\)`).
+		WithArgs(int64(1), code).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "material_code"}).AddRow(31, code))
+	description := "批量导入创建：内六角螺栓（" + code + "）\n物料编码：" + code +
+		"\n名称：内六角螺栓\n规格：M8x30\n分类：机械结构类 / 标准件\n单位：个\n状态：启用"
+	mock.ExpectExec(`INSERT INTO material_logs`).
+		WithArgs("CREATE", int64(31), "", importSnapshot{code: code}, "tester", description).
+		WillReturnResult(sqlmock.NewResult(1, 1))
+	mock.ExpectCommit()
+}
+
+// 界面上分类一律显示成「编码 名称」（Materials.vue 的 categoryLabel），用户整段照抄
+// 进模板是常事；导入校验得认这种写法，否则分类明明存在也会报「不存在或已停用」。
+func TestMaterialImportServiceAcceptsCategoryDisplayLabels(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, true)
+	expectImportPersist(mock, "A010201")
+	expectImportLog(mock, "物料.xlsx", "success", 1, 1, 0, "")
+
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "A 机械结构类", "A01 标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if result.SuccessRows != 1 || result.FailedRows != 0 || len(result.Errors) != 0 {
+		t.Fatalf("result = %+v", result)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// 只填编码也认：模板说明写的是名称，但用户对着物料分类页抄编码同样应该通过。
+func TestMaterialImportServiceAcceptsCategoryCodes(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	expectImportMasterData(mock, true)
+	expectImportPersist(mock, "A010201")
+	expectImportLog(mock, "物料.xlsx", "success", 1, 1, 0, "")
+
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "A", "A01"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	if result.SuccessRows != 1 || result.FailedRows != 0 || len(result.Errors) != 0 {
+		t.Fatalf("result = %+v", result)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// 放宽的只是写法，不是启用状态：停用分类用「编码 名称」引用同样要挡下来。
+func TestMaterialImportServiceRejectsDisabledCategoryAliases(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	mock.ExpectQuery(regexp.QuoteMeta(importCategoryQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "description", "parent_id", "status"}).
+			AddRow(3, 1, "A", "机械结构类", "", nil, "active").
+			AddRow(12, 1, "A01", "标准件", "", 3, "active").
+			AddRow(20, 1, "B", "旧大类", "", nil, "inactive"))
+	mock.ExpectQuery(regexp.QuoteMeta(importUnitQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "precision_scale", "status"}).
+			AddRow(1, 1, "个", "个", 0, "active"))
+	// 大类查不到，小类不再定位，也就不会去查编码规则
+
+	defer expectNoImportLog(t, mock)()
+
+	data := buildTestWorkbook(t, [][]string{
+		{"内六角螺栓", "M8x30", "个", "B 旧大类", "标准件"},
+	})
+	result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("import: %v", err)
+	}
+	// 断言必须点到「大类本身不存在」：小类的报错里也带着「B 旧大类」这几个字，
+	// 只判 Contains("大类") 会被这层巧合放过。
+	if result.FailedRows != 1 || !strings.Contains(result.Errors[0].Reason, "大类「B 旧大类」") {
+		t.Fatalf("result = %+v", result)
+	}
+}
+
+// 界面上的显示名是「编码 + 半角空格 + 名称」，而中文输入法全角模式下敲出来的空格是
+// U+3000、从网页复制有时带 U+00A0。两串肉眼完全一样、码点不同，不归一化就会变成
+// 「从浏览器复制的能导入、自己手写的报不存在」。
+func TestMaterialImportServiceAcceptsWhitespaceVariantsInCategoryNames(t *testing.T) {
+	cases := []struct {
+		name  string
+		major string
+		minor string
+	}{
+		{"全角空格 U+3000", "A　机械结构类", "A01　标准件"},
+		{"不换行空格 U+00A0", "A 机械结构类", "A01 标准件"},
+		{"连续半角空格", "A  机械结构类", "A01  标准件"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			mock, cleanup := newImportServiceMock(t)
+			defer cleanup()
+
+			expectImportMasterData(mock, true)
+			expectImportPersist(mock, "A010201")
+			expectImportLog(mock, "物料.xlsx", "success", 1, 1, 0, "")
+
+			data := buildTestWorkbook(t, [][]string{
+				{"内六角螺栓", "M8x30", "个", tc.major, tc.minor},
+			})
+			result, err := NewMaterialImportService().Import(1, "tester", "物料.xlsx", bytes.NewReader(data))
+			if err != nil {
+				t.Fatalf("import: %v", err)
+			}
+			if result.SuccessRows != 1 || result.FailedRows != 0 || len(result.Errors) != 0 {
+				t.Fatalf("result = %+v", result)
+			}
+			if err := mock.ExpectationsWereMet(); err != nil {
+				t.Fatal(err)
+			}
+		})
+	}
+}
+
+// 物料表的 unit 只存一种写法：单位编码。模板里填名称（界面显示的是「千克」这类
+// 显示名）时也得落成 kg，否则同一单位会按录入路径留下两种值——库存页直接显示该
+// 字段（Stock.vue 的 unit 列），会同时出现「千克」和「kg」。
+func TestMaterialImportServiceStoresUnitCodeWhenTemplateUsesUnitName(t *testing.T) {
+	mock, cleanup := newImportServiceMock(t)
+	defer cleanup()
+
+	mock.ExpectQuery(regexp.QuoteMeta(importCategoryQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "description", "parent_id", "status"}).
+			AddRow(3, 1, "A", "机械结构类", "", nil, "active").
+			AddRow(12, 1, "A01", "标准件", "", 3, "active"))
+	// 计量类单位：编码 kg、名称千克（计数类单位 code 与 name 相同，测不出差异）
+	mock.ExpectQuery(regexp.QuoteMeta(importUnitQuery)).WithArgs(int64(1)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "precision_scale", "status"}).
+			AddRow(7, 1, "kg", "千克", 3, "active"))
+	mock.ExpectQuery(regexp.QuoteMeta(importRuleQuery)).WithArgs(int64(1), int64(12)).
+		WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence", "status"}).
+			AddRow(5, 1, 12, "A01", 4, 201, "active"))
+
+	rows := []model.MaterialImportRow{
+		{Row: 2, Name: "内六角螺栓", Spec: "M8x30", Unit: "千克", MajorName: "机械结构类", MinorName: "标准件"},
+		{Row: 3, Name: "垫圈", Spec: "M8", Unit: "kg", MajorName: "机械结构类", MinorName: "标准件"},
+	}
+	items, importErrors, err := NewMaterialImportService().validateRows(1, rows)
+	if err != nil {
+		t.Fatalf("validateRows: %v", err)
+	}
+	if len(importErrors) != 0 || len(items) != 2 {
+		t.Fatalf("items = %d, importErrors = %+v", len(items), importErrors)
+	}
+	for i, item := range items {
+		if item.Unit != "kg" {
+			t.Fatalf("items[%d].Unit = %q, want 单位编码 %q", i, item.Unit, "kg")
+		}
+	}
+	if items[0].BaseUnitID == nil || *items[0].BaseUnitID != 7 {
+		t.Fatalf("baseUnitID = %v, want 7", items[0].BaseUnitID)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}

internal/service/material_test.go

@@ -156,7 +156,7 @@ func expectCodeTaken(mock sqlmock.Sqlmock, code string, taken bool) {
 
 func expectMaterialInsert(mock sqlmock.Sqlmock, code string) {
 	mock.ExpectExec(regexp.QuoteMeta(insertMaterialStmt)).
-		WithArgs(int64(1), code, "轴承", nil, "", nil, int64(12), nil, "pcs", "active", 1).
+		WithArgs(int64(1), code, "轴承", nil, "", nil, int64(12), nil, "个", "active", 1).
 		WillReturnResult(sqlmock.NewResult(7, 1))
 }
 
@@ -164,7 +164,7 @@ func expectCreatedMaterial(mock sqlmock.Sqlmock, code string) {
 	now := time.Date(2026, 9, 20, 9, 0, 0, 0, time.UTC)
 	mock.ExpectQuery(regexp.QuoteMeta(getMaterialQuery)).WithArgs(int64(1), int64(7)).WillReturnRows(
 		sqlmock.NewRows([]string{"id", "organization_id", "material_code", "name", "material_image", "spec", "manufacturer_model", "category_id", "base_unit_id", "unit", "status", "version", "created_at", "updated_at"}).
-			AddRow(7, 1, code, "轴承", nil, "", nil, 12, nil, "pcs", "active", 1, now, now),
+			AddRow(7, 1, code, "轴承", nil, "", nil, 12, nil, "个", "active", 1, now, now),
 	)
 	mock.ExpectExec(regexp.QuoteMeta(materialLogStmt)).
 		WithArgs("CREATE", int64(7), "", sqlmock.AnyArg(), "tester", sqlmock.AnyArg()).
@@ -289,7 +289,7 @@ func TestMaterialServiceReportsDuplicateManuallyEditedCode(t *testing.T) {
 	expectActiveSubcategory(mock)
 	expectLockedCodeRule(mock, &next)
 	mock.ExpectExec(regexp.QuoteMeta(insertMaterialStmt)).
-		WithArgs(int64(1), "CUSTOM-001", "轴承", nil, "", nil, int64(12), nil, "pcs", "active", 1).
+		WithArgs(int64(1), "CUSTOM-001", "轴承", nil, "", nil, int64(12), nil, "个", "active", 1).
 		WillReturnError(errors.New("Error 1062: Duplicate entry 'CUSTOM-001' for key 'uk_materials_org_code'"))
 	mock.ExpectRollback()
 

pkg/response/response.go

@@ -65,6 +65,16 @@ func Error(c *gin.Context, httpStatus int, message string) {
 	})
 }
 
+// ErrorWithData 返回带业务数据的错误响应。批量导入校验失败时需要把逐行错误
+// 一起带回去，不能只给一句话。
+func ErrorWithData(c *gin.Context, httpStatus int, message string, data interface{}) {
+	c.JSON(httpStatus, Response{
+		Code:    httpStatus,
+		Message: message,
+		Data:    data,
+	})
+}
+
 func BadRequest(c *gin.Context, message string) {
 	Error(c, 400, message)
 }

scripts/init.sql

@@ -18,6 +18,7 @@ CREATE TABLE material_categories (id BIGINT AUTO_INCREMENT PRIMARY KEY, organiza
 CREATE TABLE units (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, code VARCHAR(50) NOT NULL, name VARCHAR(100) NOT NULL, precision_scale TINYINT NOT NULL DEFAULT 0, status VARCHAR(20) NOT NULL DEFAULT 'active', UNIQUE KEY uk_units_org_code(organization_id,code), FOREIGN KEY(organization_id) REFERENCES organizations(id) ON DELETE RESTRICT) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 CREATE TABLE materials (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, material_code VARCHAR(50) NOT NULL, name VARCHAR(200) NOT NULL, material_image VARCHAR(500), spec VARCHAR(200), manufacturer_model VARCHAR(200), material_type_id BIGINT, category_id BIGINT NOT NULL, base_unit_id BIGINT, unit VARCHAR(20), status VARCHAR(20) NOT NULL DEFAULT 'active', version INT NOT NULL DEFAULT 1, created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, UNIQUE KEY uk_materials_org_code(organization_id,material_code), KEY idx_materials_category(category_id), FOREIGN KEY(organization_id) REFERENCES organizations(id) ON DELETE RESTRICT, FOREIGN KEY(material_type_id) REFERENCES material_types(id) ON DELETE RESTRICT, FOREIGN KEY(category_id) REFERENCES material_categories(id) ON DELETE RESTRICT, FOREIGN KEY(base_unit_id) REFERENCES units(id) ON DELETE RESTRICT) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 CREATE TABLE code_rules (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, category_id BIGINT NOT NULL, prefix VARCHAR(30) NOT NULL, sequence_length TINYINT NOT NULL, next_sequence BIGINT NOT NULL DEFAULT 1, status VARCHAR(20) NOT NULL DEFAULT 'active', UNIQUE KEY uk_code_rules_org_category(organization_id,category_id), FOREIGN KEY(organization_id) REFERENCES organizations(id), FOREIGN KEY(category_id) REFERENCES material_categories(id)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+CREATE TABLE material_import_logs (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, operator VARCHAR(100) NOT NULL, file_name VARCHAR(255) NOT NULL, total_rows INT NOT NULL DEFAULT 0, success_rows INT NOT NULL DEFAULT 0, failed_rows INT NOT NULL DEFAULT 0, status VARCHAR(20) NOT NULL, failure_reason VARCHAR(1000) NOT NULL DEFAULT '', created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, KEY idx_material_import_logs_org_created(organization_id,created_at), FOREIGN KEY(organization_id) REFERENCES organizations(id)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 CREATE TABLE material_unit_conversions (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, material_id BIGINT NOT NULL, from_unit_id BIGINT NOT NULL, to_unit_id BIGINT NOT NULL, conversion_rate DECIMAL(20,6) NOT NULL, effective_from DATE NOT NULL, effective_to DATE NULL, KEY idx_material_unit_conversions_material(organization_id,material_id), FOREIGN KEY(organization_id) REFERENCES organizations(id), FOREIGN KEY(material_id) REFERENCES materials(id), FOREIGN KEY(from_unit_id) REFERENCES units(id), FOREIGN KEY(to_unit_id) REFERENCES units(id)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 CREATE TABLE tags (id BIGINT AUTO_INCREMENT PRIMARY KEY, material_id BIGINT NOT NULL, tag_code VARCHAR(100) NOT NULL UNIQUE, created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, KEY idx_tags_material(material_id), FOREIGN KEY(material_id) REFERENCES materials(id) ON DELETE CASCADE) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 CREATE TABLE business_partners (id BIGINT AUTO_INCREMENT PRIMARY KEY, legal_name VARCHAR(200) NOT NULL, unified_credit_code VARCHAR(50) UNIQUE, contact_name VARCHAR(100), contact_phone VARCHAR(50), address VARCHAR(500), created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
@@ -61,6 +62,38 @@ CREATE TABLE IF NOT EXISTS schema_migration_reconciliations (
 INSERT INTO schema_migrations(version,status,completed_at,details) VALUES('2026-10-08-company-master-data-isolation','completed',NOW(),JSON_OBJECT('version','2026-10-08-company-master-data-isolation','source','fresh-init'));
 
 INSERT INTO organizations (id,code,name,status) VALUES (1,'DEFAULT','默认公司组织','active');
+-- 常用计量单位归属默认公司；计数、包装使用整数，重量、容量、长度、面积保留 3 位小数。
+INSERT INTO units (organization_id,code,name,precision_scale,status) VALUES
+  (1,'个','个',0,'active'),
+  (1,'件','件',0,'active'),
+  (1,'只','只',0,'active'),
+  (1,'支','支',0,'active'),
+  (1,'根','根',0,'active'),
+  (1,'条','条',0,'active'),
+  (1,'片','片',0,'active'),
+  (1,'张','张',0,'active'),
+  (1,'套','套',0,'active'),
+  (1,'台','台',0,'active'),
+  (1,'对','对',0,'active'),
+  (1,'双','双',0,'active'),
+  (1,'包','包',0,'active'),
+  (1,'袋','袋',0,'active'),
+  (1,'盒','盒',0,'active'),
+  (1,'箱','箱',0,'active'),
+  (1,'瓶','瓶',0,'active'),
+  (1,'罐','罐',0,'active'),
+  (1,'桶','桶',0,'active'),
+  (1,'卷','卷',0,'active'),
+  (1,'g','克',3,'active'),
+  (1,'kg','千克',3,'active'),
+  (1,'t','吨',3,'active'),
+  (1,'mL','毫升',3,'active'),
+  (1,'L','升',3,'active'),
+  (1,'m³','立方米',3,'active'),
+  (1,'mm','毫米',3,'active'),
+  (1,'cm','厘米',3,'active'),
+  (1,'m','米',3,'active'),
+  (1,'m²','平方米',3,'active');
 INSERT INTO roles (code,name) VALUES ('super_admin','超级管理员'),('warehouse_admin','仓库管理员'),('purchaser','采购人员'),('technician','技术人员'),('production','生产人员'),('sales','销售人员');
 INSERT INTO permissions (code,name) VALUES ('master.material.read','查看物料'),('master.material.write','维护物料'),('master.config.write','维护物料基础配置'),('organization.read','查看公司组织'),('organization.write','维护公司组织'),('organization.user.write','维护用户'),('organization.role.write','维护角色与权限'),('partner.supplier.read','查看供应商'),('partner.supplier.write','维护供应商'),('partner.customer.read','查看客户'),('partner.customer.write','维护客户'),('inventory.stock.read','查看库存'),('inventory.warning.write','维护库存预警'),('inventory.inbound.write','维护入库'),('inventory.outbound.write','维护出库');
 INSERT INTO role_permissions (role_id,permission_id) SELECT r.id,p.id FROM roles r CROSS JOIN permissions p WHERE r.code='super_admin';

scripts/upgrades/2026-10-10-material-bulk-import.sql

@@ -0,0 +1,4 @@
+-- 物料批量导入：新增导入记录表。仅在已部署的库上执行一次；本地开发库走 init.sql 重建。
+SET NAMES utf8mb4;
+CREATE TABLE material_import_logs (id BIGINT AUTO_INCREMENT PRIMARY KEY, organization_id BIGINT NOT NULL, operator VARCHAR(100) NOT NULL, file_name VARCHAR(255) NOT NULL, total_rows INT NOT NULL DEFAULT 0, success_rows INT NOT NULL DEFAULT 0, failed_rows INT NOT NULL DEFAULT 0, status VARCHAR(20) NOT NULL, failure_reason VARCHAR(1000) NOT NULL DEFAULT '', created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, KEY idx_material_import_logs_org_created(organization_id,created_at), FOREIGN KEY(organization_id) REFERENCES organizations(id)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+INSERT INTO schema_migrations(version,status,completed_at,details) VALUES('2026-10-10-material-bulk-import','completed',NOW(),JSON_OBJECT('version','2026-10-10-material-bulk-import','source','upgrade'));

启动项目.bat

@@ -3,9 +3,19 @@ title Warehouse Management System Launcher
 
 cd /d "%~dp0"
 
+echo Building backend...
+rem Rebuild on every launch so the executable can never be a stale one.
+go build -o server.exe ./cmd/server
+if errorlevel 1 (
+  echo.
+  echo Backend build failed. Fix the errors above and run this launcher again.
+  pause
+  exit /b 1
+)
+
 echo Starting backend (8082)...
-rem Run the current source so local testing never uses an outdated server.exe.
-start "Warehouse MMS - Backend" /D "%~dp0" cmd /k "go run ./cmd/server"
+rem Work dir must stay at the project root: frontend/dist and uploads are relative paths.
+start "Warehouse MMS - Backend" /D "%~dp0" cmd /k "server.exe"
 
 echo Starting frontend (8083)...
 start "Warehouse MMS - Frontend" /D "%~dp0frontend" cmd /k "npm run dev"