Android HttpURLConnection POST 没有数据正在发送

Question

我是运行本地主机上的 ASP.net JSON 服务。我正在从 Android 应用向服务器发送 JSON POST 请求。服务器正在接收连接，但没有 POST 数据（我通过设置一个断点来确认这一点，该断点在我从 Android 应用程序 POST 之后命中）。我得到的 HttpURLConnection 响应代码是 200 OK。但是，服务器未接收到数据。我不确定是否正在发送任何数据。我的 android 代码是（包装在 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();
        }

    }

C#/ASP.NET 服务契约。 Parent 的实例为空，但应包含 POST:

发送的数据

[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

也许你应该尝试在 out.write(postBody.getBytes("UTF-8")); 之后添加一个 out.flush();。

Answer 2

我通过一个简单的 PHP 脚本发现，出于某种原因，尽管设置了 setRequestMode("POST") 和 setDoOuput(true)，HttpURLConnection 却被发送为 GET POST 个。不知道为什么。

Android HttpURLConnection POST 没有数据正在发送

Android HttpURLConnection POST No data being sent

asp.net

post

android

json

httpurlconnection