文件上传

<el-dropdown-item icon="Top" @click="handleImport"> 导入数据</el-dropdown-item>
<!-- 用户导入对话框 -->
    <el-dialog v-model="upload.open" :title="upload.title" width="400px" append-to-body>
      <el-upload
        ref="uploadRef"
        :limit="1"
        accept=".xlsx, .xls"
        :headers="upload.headers"
        :action="upload.url + '?updateSupport=' + upload.updateSupport"
        :disabled="upload.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :auto-upload="false"
        drag
      >
        <el-icon class="el-icon--upload">
          <i-ep-upload-filled />
        </el-icon>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <template #tip>
          <div class="text-center el-upload__tip">
            <div class="el-upload__tip"><el-checkbox v-model="upload.updateSupport" />是否更新已经存在的用户数据</div>
            <span>仅允许导入xls、xlsx格式文件。</span>
            <el-link type="primary" :underline="false" style="font-size: 12px; vertical-align: baseline" @click="importTemplate">下载模板</el-link>
          </div>
        </template>
      </el-upload>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitFileForm">确 定</el-button>
          <el-button @click="upload.open = false">取 消</el-button>
        </div>
      </template>
    </el-dialog>



import { globalHeaders } from '@/utils/request';

/*** 用户导入参数 */
const uploadRef = ref<ElUploadInstance>();
const upload = reactive<ImportOption>({
  // 是否显示弹出层（用户导入）
  open: false,
  // 弹出层标题（用户导入）
  title: '',
  // 是否禁用上传
  isUploading: false,
  // 是否更新已经存在的用户数据
  updateSupport: 0,
  // 设置上传的请求头部
  headers: globalHeaders(),
  // 上传的地址
  url: import.meta.env.VITE_APP_BASE_API + 'xxx/xxx/xxx'
});

// 导入
const handleImport = () => {
  upload.title = '用户导入';
  upload.open = true;
};
/**文件上传中处理 */
const handleFileUploadProgress = () => {
  upload.isUploading = true;
};
/** 文件上传成功处理 */
const handleFileSuccess = (response: any, file: UploadFile) => {
  upload.open = false;
  upload.isUploading = false;
  uploadRef.value?.handleRemove(file);
  ElMessageBox.alert("<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" + response.msg + '</div>', '导入结果', {
    dangerouslyUseHTMLString: true
  });
  getList();
};

/** 提交上传文件 */
function submitFileForm() {
  uploadRef.value?.submit();
}