java 发送http json请求

public void getRemoteId(HttpServletRequest request,Model model){

		String name = request.getParameter("userName");

		String gender = request.getParameter("userGender");

		String birthDate = request.getParameter("birthDate");

		String birthHour = request.getParameter("birthHour");

		String birthMin = request.getParameter("birthMin");

		birthDate +=" "+birthHour+":"+birthMin;

		String addrId = request.getParameter("borough");

		String productId = request.getParameter("ProductId");

		String birthDateAccurate = request.getParameter("BirthAccurateSelect");

		String add_url = "http://test.com:8080/report.jo";

		String query = " {\"mainUser\":{\"name\":\""+name+"\",\"gender\":\""+gender+"\",\"birthDate\":\""+birthDate+"\",\"birthDateAccurate\":\""+birthDateAccurate+"\",\"addrId\":\""+addrId+"\"},\"productId\":\""+productId+"\"}";

		try {

			URL url = new URL(add_url);

			HttpURLConnection connection = (HttpURLConnection)url.openConnection();

			connection.setDoInput(true);

			connection.setDoOutput(true);

			connection.setRequestMethod("POST");

			connection.setUseCaches(false);

			connection.setInstanceFollowRedirects(true);

			connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

			connection.connect();

			DataOutputStream out = new DataOutputStream(connection.getOutputStream());

			JSONObject obj = new JSONObject();

			

			String token = "d5f224c9f83874da5b5025794c773e8e";

			obj.put("query", query);

			obj.put("token", token);

			out.writeBytes(obj.toString());

			out.flush();

			out.close();

			

			BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

			String lines;

			StringBuffer sbf = new StringBuffer();

			 while ((lines = reader.readLine()) != null) {

	                lines = new String(lines.getBytes(), "utf-8");

	                sbf.append(lines);

	            }

	            System.out.println(sbf);

	            reader.close();

	            // 断开连接

	            connection.disconnect();

		} catch (MalformedURLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}