问云对象存储,POST请求成功上传了文件,但返回响应体无内容,WHY？

RT...

状态码是默认的204

但是response的内容是空的.我需要帮助文档中提到的这个PostResponse

这是我现在返回的响应头,content-length为0

Access-Control-Allow-Methods: PUT,GET,POST,HEAD

Access-Control-Allow-Origin: *

Connection: keep-alive

Content-Length: 0

Content-Type: application/xml

Date: Sun, 26 Aug 2018 08:32:45 GMT

ETag: "274fc234a5fd09de59be59a7946b64df"

Location: http://xxxxxx.cos.ap-chengdu.myqcloud.com/upload/abc/2018-8-26/002.-9c0d5123-961a-4b0c-802b-bdfa294abf1e.png

Server: tencent-cos

x-cos-request-id: NWI4MjY1YWRfNGQ5ZTU4NjRfODc4Nl9jODc0NWI=