自带的查看器显示异常，表头全部显示成一样的数字，还没有另存为的按钮

  wx.downloadFile({
        url: host + '/group/group/exportGroupDetail?groupId=' + _this.data.id,
        // url: 'http://127.0.0.1:5500/1653895017317.xlsx',
        // url: 'http://127.0.0.1:5500/%E7%96%AB%E6%83%85%E6%9C%9F%E9%97%B4%E8%A1%8C%E7%A8%8B%E7%99%BB%E8%AE%B0%E8%A1%A81.xlsx',
        header: {
          'Authorization': getToken(),
          'Content-Type': 'application/vnd.ms-excel; charset=utf-8'
        },
        success(res) {
          if (res.statusCode === 200) {
            wx.openDocument({
              filePath: res.tempFilePath,
              showMenu: true,
              success: function () {
                console.log('打开文档成功')
              },
              fail: function () {
                console.log('打开失败');
              }
            })


          } else {
            reject()
          }
          wx.hideLoading()
        },
        fail() {
          wx.hideLoading()
          reject()
        }
      })
    })