feat(订单表单): 添加下载销售订单模板功能

src/components/order-form/material-detail-mixin.js

@@ -22,7 +22,7 @@ import {
   MaterialDetailDataSource
 } from '@/constants/order'
 import { MATERIAL_DETAIL_EVENTS, DIALOG_EVENTS } from './events'
-import { getMaterialFullList } from '@/api/order/sales-order'
+import { getMaterialFullList, downloadSalesOrderTemplate } from '@/api/order/sales-order'
 import { getBrandStockList } from '@/api/forecast/brand-stock'
 import {
   formatAmount,
@@ -180,7 +180,13 @@ export default {
        * 选中的行数据 - 用于批量操作
        * @type {MaterialDetailRecord[]}
        */
-      selectedRows: []
+      selectedRows: [],
+
+      /**
+       * 模板下载加载状态
+       * @type {boolean}
+       */
+      templateLoading: false
     }
   },
 
@@ -575,6 +581,43 @@ export default {
     },
 
     /**
+     * 下载销售订单模板
+     * @returns {Promise<void>}
+     * @this {MaterialDetailTableComponent & Vue}
+     */
+    async handleDownloadTemplate() {
+      try {
+        this.templateLoading = true
+
+        const res = await downloadSalesOrderTemplate()
+
+        const disposition = res?.headers?.['content-disposition'] || res?.headers?.['Content-Disposition']
+        let filename = '销售订单模板.xlsx'
+        if (disposition) {
+          const utf8Match = /filename\*=UTF-8''([^;\n]+)/i.exec(disposition)
+          const plainMatch = /filename="?([^;\n"]+)"?/i.exec(disposition)
+          const raw = utf8Match ? decodeURIComponent(utf8Match[1]) : (plainMatch ? plainMatch[1] : '')
+          if (raw) filename = raw
+        }
+
+        const blob = new Blob([res.data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' })
+        const url = window.URL.createObjectURL(blob)
+        const a = document.createElement('a')
+        a.href = url
+        a.download = filename
+        document.body.appendChild(a)
+        a.click()
+        document.body.removeChild(a)
+        window.URL.revokeObjectURL(url)
+      } catch (e) {
+        console.error('下载模板失败:', e)
+        this.$message && this.$message.error('下载模板失败，请稍后重试')
+      } finally {
+        this.templateLoading = false
+      }
+    },
+
+    /**
      * 准备物料明细数据
      * @description 将选中的物料数据转换为物料明细表所需的格式
      * @param {import('./types').MaterialOption} material - 物料数据（来自getMaterialFullList API）

src/components/order-form/material-detail-table.vue

@@ -50,6 +50,15 @@
             增加
           </el-button>
           <el-button
+            type="primary"
+            icon="el-icon-download"
+            size="small"
+            :loading="templateLoading"
+            @click="handleDownloadTemplate"
+          >
+            下载模板
+          </el-button>
+          <el-button
             v-if="editMode && selectedRows.length > 0"
             type="danger"
             icon="el-icon-delete"