java 发送网络请求

近日接触了微信号开发，调接口时要发送网络请求

下面是网络请求代码：

import net.sf.json.JSONObject;import java.io.InputStream;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.URL;public class test {private static final String https_url1 = "https://qyapi.xxx.qq.com/cgi-bin/user/xxx?access_token=ACCESS_TOKEN";    public static void getUserByUserTicket( String t,String token) {        String userTicket = t;//"J2bUGLuCNXGGEhpqITZ254LCQNsJxU_oedqDLy5k2KDr9WSLlp8jX9vXef3lHp1NsR4QwcXtTR6DTjHvGWjsqqCf3WJ4ezGmLz8WyukI03I";        String post_url = https_url1.replace("ACCESS_TOKEN", token);        String retMsg = "";        JSONObject obj = null;        JSONObject sendObj = new JSONObject();        sendObj.put("user_ticket",userTicket);        System.out.println("send:"+sendObj.toString());        try {            URL url = new URL(post_url);            HttpURLConnection conn = (HttpURLConnection) url.openConnection();            conn.setRequestMethod("POST");            conn.setConnectTimeout(5000);            conn.setReadTimeout(5000);            conn.setDoOutput(true);            conn.setDoInput(true);            // 设置文件类型:            conn.setRequestProperty("contentType", "application/json");            //传输开始            conn.connect();            OutputStream out = conn.getOutputStream();            // 写入请求的字符串            out.write((sendObj.toString()).getBytes());            out.flush();            out.close();            System.out.println("传输标识代码"+conn.getResponseCode());            InputStream sendStatus = conn.getInputStream();            int size = sendStatus.available();            byte[] jsonBytes = new byte[size];            sendStatus.read(jsonBytes);            retMsg = new String(jsonBytes, "UTF-8");            sendStatus.close();            conn.disconnect();            obj = JSONObject.fromObject(retMsg);        } catch (Exception e) {            e.printStackTrace();        }        System.out.println(obj.toString());    }    }

大概就是这样，发送请求时还发送json包。接收到的数据流也转换为了json对象。