wx.uploadFile({
                url: ``,
                filePath: res.tempFilePath,
                name: 'file',
                responseType: 'arraybuffer',
                header: {
                  'content-type': "multipart/form-data",
                  'accept': 'application/json',
                  'Authorization': 'Bearer ' + wx.getStorageSync('userIds').token,
                },
                formData: {},
                success(res) {
                  console.log('res',res)
                  if (res.statusCode === 200) {
                    const fileManager = wx.getFileSystemManager();
                    const FilePath = wx.env.USER_DATA_PATH + "/" + "志愿报告.pdf";
                    fileManager.writeFile({
                      filePath: FilePath,
                      data: res.data,
                      encoding: "binary", //编码方式 
                      success: res => {
                        wx.openDocument({ //我这里成功之后直接打开
                          filePath: FilePath, 
                          showMenu: true,
                          fileType: "pdf",
                          success: result => {
                            wx.hideLoading();
                          },
                          fail: err => {
                            wx.hideLoading();
                            wx.showToast({
                              title: '打开文档失败!',
                              icon: 'none', //默认值是success,就算没有icon这个值，就算有其他值最终也显示success
                              duration: 2000, //停留时间
                            })
                          }
                        });
                      },
                      fail: res => {
                        wx.hideLoading();
                        wx.showToast({
                          title: '导出失败!',
                          icon: 'none', //默认值是success,就算没有icon这个值，就算有其他值最终也显示success
                          duration: 2000, //停留时间
                        })
                      }
                    })
                  } else {
                    wx.hideLoading();
                    wx.showToast({
                      title: '生成失败!',
                      icon: 'none', //默认值是success,就算没有icon这个值，就算有其他值最终也显示success
                      duration: 2000, //停留时间
                    })
                  }


                },
                fail(err) {
                  wx.hideLoading();
                  wx.showToast({
                    title: err,
                    icon: 'none', //默认值是success,就算没有icon这个值，就算有其他值最终也显示success
                    duration: 2000, //停留时间
                  })
                }
              });