java使用代理访问https://

import java.io.IOException;
import java.io.InputStream;
import java.net.*;


public class NetProxy {
    public static void main(String[] args) throws IOException {
        //设置请求访问的地址
        URL url = new URL("https://www.baidu.com/");
        
        //设置代理 , 端口是你自己使用软件代理的本地出口,socks和http代理的端口
        InetSocketAddress address = new InetSocketAddress("127.0.0.1",1080);
        Proxy proxy = new Proxy(Proxy.Type.HTTP, address); // http 代理
        URLConnection connection = url.openConnection(proxy);
        //此处是浏览器的请求头. 一般是为了防止对面设置的反爬
        connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36)");
        connection.connect();

        //连接获取数据流
        InputStream inputStream = connection.getInputStream();
        
        //转化数据流变数据本
        StringBuilder sb1 = new StringBuilder();
            byte[] buffer = new byte[1024];
            int len;
            while((len = inputStream.read(buffer)) != -1) {
                sb1.append(new String(buffer, 0, len, "UTF-8"));
            }
        //输出文本至屏幕    
        System.out.println(sb1);
        }
}

　我是设置的系统代理, 而非直接访问的远程代理,这点注意一下 .其实就相当于端口转发而已. 　

 

Chrome获取 User-Agent 步骤:

1. 打开 百度首页 , 按F12 

2.在控制台 ,  输入  javascript:alert(navigator.userAgent)