HTTP客户端代码片段

 代码片段：

 public HttpURLConnection connection = null;

 设置connection属性
 URL url = new URL(urlPath);
 connection = (HttpURLConnection) url.openConnection();
 connection.setDoOutput(true);
 connection.setDoInput(true);
 connection.setRequestMethod("POST");
 connection.setUseCaches(false);
 connection.setInstanceFollowRedirects(true);
 connection.setRequestProperty("Content-type", "application/json");
 connection.setRequestProperty("Content-encoding", "GBK");
 //connection.setRequestProperty("Content-encoding", "UTF-8");
 connection.setRequestProperty("Accept", "application/json");
 connection.connect();

 发送请求
 output = connection.getOutputStream();
 output.write(request.getBytes());
 output.flush();

 接受响应
 reader = new BufferedReader(new InputStreamReader(
                 connection.getInputStream()));
 String st;
 StringBuffer stb = new StringBuffer();
 while (null != (st = reader.readLine())) {
 stb.append(st);
 }

 关闭connection
 if (null != connection) {
             connection.disconnect();
         }