错误405从Android向C＃Webservice发送HTTP Post请求

Question

我尝试将HTTP Post Request从Android应用程序发送到C＃RESTful Web服务。 出于某种原因，我会在连接后立即收到响应代码405。

如果我尝试使用我制作的C＃客户端发送POST请求，代码工作正常，我成功得到了响应。

来自Android的代码（在服务中运行）：

String url = "http://myurl.com/Service1.svc/login/2";
String postDataParams = "{"username":"Ryrud","password":"Pups"}";

//Connect
            httpcon = (HttpURLConnection) ((new URL(url).openConnection()));
            int responseCode = httpcon.getResponseCode();
            Log.d("zzz", "RCode: " + responseCode); // Getting in log: "RCode: 405"
            httpcon.setDoOutput(true);
            httpcon.setRequestMethod("POST");
            httpcon.setRequestProperty("Content-Type", "application/json");
            httpcon.connect();

//Post data
                DataOutputStream wr = new DataOutputStream(httpcon.getOutputStream());
                wr.writeBytes(postDataParams);
                wr.flush();
                wr.close();

RESTful Web服务代码：

[OperationContract]
       [WebInvoke(Method = "POST",
           ResponseFormat = WebMessageFormat.Json,
           RequestFormat = WebMessageFormat.Json,
           UriTemplate = "login/{id}")]
           login login(string id, login userpass);

Answer 1

在将数据写入输出流之前，不要询问响应代码。