Android：发送没有回复的帖子

在我的应用程序中，我需要将各种 POST 请求发送到服务器 . 其中一些请求有回复，有些则没有 .

这是我用来发送请求的代码：

private static final String TAG = "Server";
private static final String PATH = "http://10.0.0.2:8001/data_connection";
private static HttpResponse response = null;
private static StringEntity se = null;
private static HttpClient client;
private static HttpPost post = null;
public static String actionKey = null;

public static JSONObject sendRequest(JSONObject req) {
    try {
        client = new DefaultHttpClient();

        actionKey = req.getString("actionKey");
        se = new StringEntity(req.toString());
        se.setContentEncoding(new BasicHeader(HTTP.CONTENT_ENCODING, "application/json"));
        se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
        post = new HttpPost(PATH);
        post.setEntity(se);

        Log.d(TAG, "http request is being sent");
        response = client.execute(post);
        Log.d(TAG, "http request was sent");

        if (response != null) {
            InputStream in = response.getEntity().getContent();
            String a = convertFromInputStream(in);
            in.close();
            return new JSONObject(a);
        }

    } catch (UnsupportedEncodingException e) {
        Log.d(TAG, "encoding request to String entity faild!");
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        Log.d(TAG, "executing the http POST didn't work");
        e.printStackTrace();
    } catch (IOException e) {
        Log.d(TAG, "executing the http POST didn't work");
        e.printStackTrace();
    } catch (JSONException e) {
        Log.d(TAG, "no ActionKey");
        e.printStackTrace();
    }
    return null;
}

private static String convertFromInputStream(InputStream in)
        throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(in));
    StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = br.readLine()) != null) {
        sb.append(line);
    }
    return (sb.toString());
}

这是发送请求的 AsyncTask 类的代码：

class ServerRequest extends AsyncTask<JSONObject, Void, JSONObject> {

    @Override
    protected JSONObject doInBackground(JSONObject... params) {
        JSONObject req = params[0];
        JSONObject response = Server.sendRequest(req);
        return response;
    }

    @Override
    protected void onPostExecute(JSONObject result) {
        // HANDLE RESULT
        super.onPostExecute(result);
    }
}

当服务器未返回响应时，我的问题就开始了 . 即使在完成工作后， AsyncTask 线程仍保持打开状态，因为 HTTPClient 永远不会关闭连接 .

有没有办法不等待回应？这肯定会给服务器增加很多开销，因为尝试连接它的所有Android应用程序都会使连接保持活动状态，并且可能会在应用程序本身造成很多问题 .

基本上，我正在寻找的是一种方法，它允许我发送到 POST 消息并在发送请求后立即终止连接，因为没有响应我的方式 .