使用java访问网络并返回连接状态码和HTTP响应消息

功能：测试某一网站是否能够正常访问

package com.star.networktest;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;

public class Access {
    public static void main(String[] args) {
 

        long begintime = System.currentTimeMillis();
        try{    
        URL url = new URL("http://my.tjut.edu.cn");
//        URL url =new URL("https://idp.tjut.edu.cn/idp/shibboleth");
        HttpURLConnection urlcon = (HttpURLConnection)url.openConnection();
        urlcon.connect();         //获取连接
        InputStream is = urlcon.getInputStream();
        System.out.println(urlcon.getResponseCode());    //获取连接状态码
        System.out.println(urlcon.getResponseMessage());    //获取HTTP响应消息

    }catch (IOException e) {
            System.out.println(e);    }
    
    }    
}