EasyPoi導入數據后，導出發生錯誤的數據報[object Object]

后台輸出流到前端

//有錯誤信息，就導出文件
            if (errorList != null && errorList.size() > 0) {
                String title = "導入國產葯數據的異常數據";
                ExcelUtils.exportExcel(errorList, title, title, StandardCode.class, title, response);
                return null;
            }

在響應攔截器中加以下代碼：

if (headers['content-type'].toLowerCase() === 'application/vnd.ms-excel;charset=utf-8') {
          return response
      }

如果不加這段代碼會報錯：

No converter for [class com.ljxx.entity.Result] with preset Content-Type 'application/vnd.ms-excel;charset=UTF-8'

由於上述代碼返回的是response，故使用filedownload下載的時候應該為response.data

handleUploadChange1(file) {
      if (file.name.lastIndexOf('.') < 0) {
        this.$message.error('上傳文件只能是xls、xlsx格式!')
        return
      }
      const testMsg = file.name.substring(file.name.lastIndexOf('.') + 1).toLowerCase()
      const extensionXLS = testMsg == 'xls'
      const extensionXLSX = testMsg == 'xlsx'
      if (!extensionXLS && !extensionXLSX) {
        this.$message.error('上傳文件只能是xls、xlsx格式!')
        return
      }
      const isLt2M = file.size / 1024 / 1024 < 2
      if (!isLt2M) {
        this.$message.error('上傳文件不能超過 2MB!')
        return
      }
      console.log('import continue')
      this.importLoading = true
      this.importDisabled = true
      const data = new FormData()
      data.append('file', file.raw)
      standardCode.importDomesticExcel(data).then(response => {
        console.log(response)
        if (response.success) {
          this.open2(response.msg)
          this.importLoading = false
          this.importDisabled = false
          this.getList()
        } else {
          this.$message.success("部分數據導入失敗，數據已下載到本地，請查看！")
          fileDownload(response.data, '導入數據中的異常數據.xlsx')
          // this.open2(response.msg)
          this.importLoading = false
          this.importDisabled = false
        }
      }).catch(() => {
        this.open2('抱歉，導入失敗')
        this.importLoading = false
        this.importDisabled = false
      })
    },

 如果報錯文件打不開，如下：

 

 

 是因為responseType值應為arraybuffer,而不能是arraybuffer;charset=utf-8

importDomesticExcel(data) {
    return request({
      url: '/standardCode/import',
      method: 'post',
      data: data,
      responseType: 'arraybuffer',
      headers: {
        'Content-Type': 'multipart/form-data'
      }
    })
  },