Android网络请求，获取数据demo，几种网络请求的区别，JSON 与 XML 的区别、优劣势

    private void sendRequestWithHttpURLConnection() {

        new Thread(new Runnable() {
            @Override
            public void run() {
                HttpURLConnection connection = null;
                BufferedReader reader = null;
                try {
                    URL url = new URL("http://www.baidu.com");
                    connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod("GET");
                    connection.setReadTimeout(4000);
                    connection.setReadTimeout(4000);
                    InputStream inputStream = connection.getInputStream();
                    reader = new BufferedReader(new InputStreamReader(inputStream));
                    StringBuilder stringBuilder = new StringBuilder();
                    String line;
                    while ((line = reader.readLine()) != null) {