Android HttpURLConnection POST没有数据被发送

Question

我正在localhost上运行ASP.netJSON服务。我正在从Android应用程序向服务器发送JSON POST请求。服务器正在接收连接，但没有POST数据（我通过设置断点来确认这一点，断点在我从Android应用程序发布后命中）。我得到的HttpURLConnection响应代码是200 OK。但是，服务器没有收到数据。我不确定是否正在发送任何数据。我的android代码是（包裹在AsyncTask中）：

public void makeHttpRequest(String verb, String serverAddr, String postBody)
    {
        HttpURLConnection urlConnection = null;
        OutputStream out = null;
        try {
            serverAddr = "http://10.0.2.2:4617/parent/dummy";
            URL url = new URL(serverAddr);
            urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setDoOutput(true);
            urlConnection.setChunkedStreamingMode(0);
            urlConnection.setRequestProperty("Transfer-Encoding","chunked");
            urlConnection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");

            urlConnection.connect();

            out = new BufferedOutputStream(urlConnection.getOutputStream());
            out.write(postBody.getBytes("UTF-8"));

            int responseCode = urlConnection.getResponseCode();
            System.out.println("HTTP Response Code: " + responseCode + " | " + urlConnection.getResponseMessage());
        }
        catch (MalformedURLException mal) {
            //
        }
        catch (IOException ioe) {
            //
        }
        finally {
            if (out != null) {
                try {
                    out.close();
                } catch(IOException e) {

                }
            }

            if (urlConnection != null)
                urlConnection.disconnect();
        }

    }

该C#/ASP.NET服务契约。实例的家长是空的，但应包含数据发送的POST：

[ServiceContract]
    public interface IRestServiceParent
    {

        [WebInvoke(UriTemplate = "{dummy}", Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
        Parent PostParent(string dummy, Parent instance);
    }

public Parent PostParent(string dummy, Parent instance)
        {
            var result = MasterStorageStore.Instance.PostParent(instance);
            if (result == null) return emptyParent;

            return NewCopy(result);
        }

Answer 1

我通过一个简单的PHP脚本发现，由于某种原因，尽管设置了< code > setRequestMode(" POST ")和< code>setDoOuput(true)，但< code>HttpURLConnection是作为< code>GET而不是< code>POST发送的。我不知道为什么。

Answer 2

也许你应该尝试添加一个< code > out . flush()；在< code > out . write(postbody . getbytes(" UTF-8 "))之后；。