blob 下载获取后台错误信息

• this 在函数里面获取不到，所以要取出来

this.$api.getReliabilityReportWord(data).then((res) => {
  const _this = this;
  let fileReader = new FileReader();
  fileReader.onload = function () {
    try {
      let jsonData = JSON.parse(this.result); // 说明是普通对象数据，后台转换失败
      if (jsonData.code) {
        console.log(jsonData, "jsonData");
        _this.$message.error(jsonData.message);
      }
    } catch (err) {
      // 解析成对象失败，说明是正常的文件流
      let blob = new Blob([res]);
      let downloadElement = document.createElement("a");
      let href = window.URL.createObjectURL(blob);
      downloadElement.href = href;
      downloadElement.download = `可靠性文档计算书.docx`;
      document.body.appendChild(downloadElement);
      downloadElement.click();
      document.body.removeChild(downloadElement);
      window.URL.revokeObjectURL(href);
    }
  };
  fileReader.readAsText(res);
});

• 传送门：https://www.cnblogs.com/qilj/p/11950517.html