java 发送网络请求

约定不等于承诺〃 2021-09-26 10:00 365阅读 0赞

# 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。 ##