android - Json POST Android の送信 - データが追加されていません

Question

post メソッドに問題があります。データがリクエストに追加されていないようです。私のjsonオブジェクト（以下のjObject）はあります{"FirstName":"John"}が、応答は{"FirstName":"Peter"}. このリクエストで POST が機能しないのはなぜですか?

   @Override
    protected Void doInBackground(Void... arg) {
          DefaultHttpClient httpClient = new DefaultHttpClient();
          HttpPost request = new HttpPost(someUrl);

          ResponseHandler <String> responseHandler = new BasicResponseHandler();
          request.setHeader("Content-type", "application/json");
          StringEntity se = new StringEntity(jObject.toString());
          se.setContentEncoding("UTF-8");
          se.setContentType("application/json");
          request.setEntity(se);

          String authorizationString = "Basic " + Base64.encodeToString(("username" + ":" + "password").getBytes(), Base64.NO_WRAP);
          request.addHeader("Authorization", authorizationString);

          String response = httpClient.execute(request, responseHandler);

編集：最初にデータを取得する方法

   // Initialize url and create connection
    URL url = new URL(urlSpec);
    HttpURLConnection connection = (HttpURLConnection)url.openConnection();
    byte[] auth = (email_login + ":" + password_login).getBytes();
        String basic = Base64.encodeToString(auth, Base64.NO_WRAP);
        httpConn.setRequestProperty("Authorization", "Basic " + basic);
    // Retrieve data
    try{
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        InputStream in = connection.getInputStream();

        if(connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return null;
        }

        int bytesRead = 0;
        byte[] buffer = new byte[1024];
        while ((bytesRead = in.read(buffer)) > 0) {
            out.write(buffer, 0, bytesRead);
        }
        out.close();
        return out.toByteArray();
    } finally {
        connection.disconnect();
    }