android - HTTP 上传返回 invalid put policy encoding 错误

Question

总的来说

1. 服务端使用七牛官方 Ruby SDK 生成的 uptoken
2. Android 客户端使用 Retrofit 构建上传，失败：invalid put policy encoding
3. 自己构建 Multipart 请求体，失败同上
4. 已自己检查 upload token，以 : 为分割的第一段确为 Access Key 的 base64 编码；第三段确为 put policy 的 json 的 base64 编码（如果这个都能错就是你们 Ruby SDK 的问题）

生成 upload token

def upload_token
  put_policy = Qiniu::Auth::PutPolicy.new 'xxxxxx'
  put_policy.fsize_limit = "20971520"
  put_policy.mime_limit = "image/*;video/*"
  token = Qiniu::Auth.generate_uptoken(put_policy)
  render json: {token: token}, status: :created
end

使用 Retrofit 请求

@Multipart
@POST("/")
void upload(@Part("file") CountingTypedStream stream,
            @Part("token") TypedString token,
            Callback<UploadResult> callback);

产生的请求体如下（省略 file part。SF 你又擅自着色我的代码了！）：

--667fdbb3-301f-4f25-ab8d-acc80ca14192
Content-Disposition: form-data; name="token"
Content-Type: text/plain; charset=UTF-8
Content-Length: 202
Content-Transfer-Encoding: binary
Y0这是我的AK无误t5:1o1Ic这里也没问题42UVEo=:eyJzY这一串也没问题KiJ9
--667fdbb3-301f-4f25-ab8d-acc80ca14192--

返回给我的东西（取自日志）：

07-24 22:59:43.266 D/Retrofit﹕ <--- HTTP 401 http://upload.qiniu.com/ (13126ms)
07-24 22:59:43.266 D/Retrofit﹕ : HTTP/1.1 401 Unauthorized
07-24 22:59:43.266 D/Retrofit﹕ Access-Control-Allow-Headers: X-File-Name, X-File-Type, X-File-Size
07-24 22:59:43.266 D/Retrofit﹕ Access-Control-Allow-Methods: OPTIONS, HEAD, POST
07-24 22:59:43.266 D/Retrofit﹕ Access-Control-Allow-Origin: *
07-24 22:59:43.266 D/Retrofit﹕ Cache-Control: no-store, no-cache, must-revalidate
07-24 22:59:43.266 D/Retrofit﹕ Connection: close
07-24 22:59:43.266 D/Retrofit﹕ Content-Length: 39
07-24 22:59:43.266 D/Retrofit﹕ Content-Type: application/json
07-24 22:59:43.266 D/Retrofit﹕ Date: Thu, 24 Jul 2014 14:59:43 GMT
07-24 22:59:43.266 D/Retrofit﹕ Pragma: no-cache
07-24 22:59:43.266 D/Retrofit﹕ Server: nginx/1.4.4
07-24 22:59:43.266 D/Retrofit﹕ X-Android-Received-Millis: 1406213983252
07-24 22:59:43.266 D/Retrofit﹕ X-Android-Response-Source: NETWORK 401
07-24 22:59:43.266 D/Retrofit﹕ X-Android-Selected-Transport: http/1.1
07-24 22:59:43.266 D/Retrofit﹕ X-Android-Sent-Millis: 1406213970562
07-24 22:59:43.266 D/Retrofit﹕ X-Content-Type-Options: nosniff
07-24 22:59:43.266 D/Retrofit﹕ X-Log: UP:17/401
07-24 22:59:43.266 D/Retrofit﹕ X-Reqid: JUAAAFZBtNkq4IMT
07-24 22:59:43.266 D/Retrofit﹕ X-Via: 1.1 gzqxg204:1 (Cdn Cache Server V2.0)
07-24 22:59:43.274 D/Retrofit﹕ {"error":"invalid put policy encoding"}
07-24 22:59:43.274 D/Retrofit﹕ <--- END HTTP (39-byte body)

自己手动拼接构建的请求体

--4da8f9b3-4e83-483b-b206-96faf1c4574d
Content-Disposition: form-data; name="token"

我是PutPolicy肯定没问题啦啦啦啦啦啦
--4da8f9b3-4e83-483b-b206-96faf1c4574d
Content-Disposition: form-data; name="file"; filename="stream_file"
Content-Type: application/octet-stream

文件内容
--4da8f9b3-4e83-483b-b206-96faf1c4574d--

完全按照 http://developer.qiniu.com/docs/v6/api/reference/up/upload.html 的格式构建，Header 不多不少。