我正在使用Retrofit + Okhttp发出POST请求,我遇到了以下错误:
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ ---> HTTP POST http://10.0.0.4:3000/api/v1/users/1/posts
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ Accept: application/json
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ Content-Type: application/json; charset=UTF-8
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ Content-Length: 150
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ {"description":"test","image_url":"https://s3.amazonaws.com/bucket/xxx-4800-b0e0-fc206f95f158.jpeg","title":"test","price":0.0,"user_id":0}
02-05 04:45:13.981 15972-16249/com.myapp.android D/Retrofit﹕ ---> END HTTP (150-byte body)
02-05 04:45:14.001 15972-15972/com.myapp.android W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
02-05 04:45:14.017 15972-16249/com.myapp.android D/Retrofit﹕ ---- ERROR http://10.0.0.4:3000/api/v1/users/1/posts
02-05 04:45:14.017 15972-16249/com.myapp.android D/Retrofit﹕ java.net.ProtocolException: Unexpected status line: HTTP/1.1 422��Unprocessable Entity
at com.squareup.okhttp.internal.http.StatusLine.parse(StatusLine.java:73)
at com.squareup.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:187)
at com.squareup.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:80)
at com.squareup.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:791)
at com.squareup.okhttp.internal.http.HttpEngine.access$200(HttpEngine.java:90)
at com.squareup.okhttp.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:784)
at com.squareup.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:645)
at com.squareup.okhttp.Call.getResponse(Call.java:263)
at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:219)
at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:192)
at com.squareup.okhttp.Call.execute(Call.java:79)
at retrofit.client.OkClient.execute(OkClient.java:53)
at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:326)
at retrofit.RestAdapter$RestHandler.access$100(RestAdapter.java:220)
at retrofit.RestAdapter$RestHandler$1.invoke(RestAdapter.java:265)
at retrofit.RxSupport$2.run(RxSupport.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at retrofit.Platform$Android$2$1.run(Platform.java:142)
at java.lang.Thread.run(Thread.java:841)
02-05 04:45:14.017 15972-16249/com.myapp.android D/Retrofit﹕ ---- END ERROR
使用以下库:
compile 'com.squareup.retrofit:retrofit:1.9.0'
compile 'com.squareup.okhttp:okhttp-urlconnection:2.2.0'
compile 'com.squareup.okhttp:okhttp:2.2.0'
我期待以下内容回来(故意测试422错误):
{
"title": [
"is too short (minimum is 6 characters)"
]
}
通过Postman(https://chrome.google.com/webstore/detail/postman-rest-client/fdmmgilgnpjigdojojpjoooidkmcomcm?hl=en)
发送时,我得到了预期的结果修改 我在Rails中进行以下调用以返回422结果:
render json: @post.errors.to_json, status: :unprocessable_entity
另一个编辑:
以下是通过Wireshark发出的请求的屏幕截图。没有什么看起来与众不同,但我以前从未使用过该工具。
这是适当的十六进制。
答案 0 :(得分:7)
您的服务器似乎违反了HTTP规范。状态行定义如下:
响应消息的第一行是状态行,包含 协议版本,空间(SP),状态代码,另一个 space,一个描述状态代码的空文本短语, 并以CRLF结尾。
status-line = HTTP-version SP status-code SP reason-phrase CRLF
从例外情况看,非空格字符(或两个)位于状态代码和原因短语之间。
OkHttp正在寻找这些元素之间的ASCII空格(字符#32)。您可以使用WireShark或Charles等拦截网络流量并找出HTTP服务器正在使用的字符。