public ResponseDTO<String> importUsers(MultipartFile file){
    List<UserImportForm> dataList;
    try{
        dataList = FastExcel.read(file.getInputStream()).head(UserImportForm.class)
                .sheet()
                .doReadSync();
        for(UserImportForm userImportForm:dataList){
            UserEntity userEntity = SmartBeanUtil.copy(userImportForm,UserEntity.class);
            userDao.insert(userEntity);
        }
    }catch(IOException e){
        log.error(e.getMessage(),e);
        throw new BusinessException("數(shù)據(jù)格式存在問題，無法讀取");
    }
    if(CollectionUtils.isEmpty(dataList)){
        return ResponseDTO.userErrorParam("數(shù)據(jù)為空");
    }
    return ResponseDTO.okMsg("成功導入"+dataList.size()+"條，具體數(shù)據(jù)為:"+ JSON.toJSONString(dataList));
}

<a-button @click="downloadExcel"> <download-outlined />第一步：下載模板</a-button>

function downloadExcel(){
  window.open('http://localhost:1024/user.xlsx');
}

<a-button @click="onImportUsers">
  <ImportOutlined />
  第三步：開始導入
</a-button>

async function onImportUsers(){
  const formData = new FormData();
  fileList.value.forEach((file)=>{
    formData.append('file',file.originFileObj);
  });
  SmartLoading.show();
  try{
    let res = await userApi.importUsers(formData);
    message.success(res.msg);
  }catch(e){
    smartSentry.captureError(e);
  }finally {
    SmartLoading.hide();
  }
}