HarmonyOS 使用 @ohos.request 进行图片上传，如何能接受到自定义的 response

在 APP 中需要上传肖像，上传成功后，后台会给出上传后的信息，如下所示：

{
  "code": 200,
  "msg": "成功",
  "data": {
    "result": {
      "number": 1,
      "url": "https://xxx.jpg"
    },
  "message": "文件上传成功",
  "status": 1
  }
}
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而在request.uploadFile的 then 方法中，只能拿到 uploadTask 或 TaskState的数据：

// 将本地应用文件上传至网络服务器
try {
  request.uploadFile(context, uploadConfig)
    .then((uploadTask: request.UploadTask) => {
      uploadTask.on('complete', (taskStates: Array<request.TaskState>) => {
        for (let i = 0; i < taskStates.length; i++) {
          console.info(`upload complete taskState: ${JSON.stringify(taskStates[i])}`);
        }
      });
    })
    .catch((err: BusinessError) => {
      console.error(`Invoke uploadFile failed, code is ${err.code}, message is ${err.message}`);
    })
} catch (error) {
  let err: BusinessError = error as BusinessError;
  console.error(`Invoke uploadFile failed, code is ${err.code}, message is ${err.message}`);
}
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我怎么才能拿到后台返给我的数据呢？