async handleCheckFile (row) {
    const fileUrl = row.fileUrl  // 这个文件url 浏览器可以直接打开的  不是文件流也不是返回文件流的接口
      const fileName = row.fileName; // 支持自定义的文件名

      try {
        const response = await axios.get(fileUrl, { responseType: 'blob' });
        const contentType = response.headers['content-type'];
        const blob = new Blob([response.data], { type: contentType });

        if (typeof window.navigator.msSaveBlob !== 'undefined') {
          // 兼容IE浏览器
          window.navigator.msSaveBlob(blob, fileName);
        } else {
          const url = window.URL.createObjectURL(blob);

          const link = document.createElement('a');
          link.href = url;
          link.setAttribute('download', fileName);
          link.style.display = 'none';

          document.body.appendChild(link);
          link.click();
          document.body.removeChild(link);

          window.URL.revokeObjectURL(url);
        }
      } catch (error) {
        console.error('Error downloading file:', error);
      }
    

    // this.detailFun(row);
  },