设置动态代理链接

public static void main(String[] args){
        //用于创建一个代理的链接
        SocketAddress sa = new InetSocketAddress("IP",端口号);
        //生成一个代理对象...  代理模式为Proxy.Type.HTTP
        Proxy proxy = new Proxy(Proxy.Type.HTTP, sa);
        try {
            //创建一个URL对象
            URL url = new URL("www.baidu.com");
            //通过创建的代理用于打开指定的网址
            HttpURLConnection con = (HttpURLConnection) url.openConnection(proxy);
            //设置编码信息获取到的信息用utf-8编码
            con.setRequestProperty("Charsert", "UTF-8");
            BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
            String str = br.readLine();
            System.out.println(str);
        } catch (UnsupportedEncodingException e) {
             System.out.println("编码格式异常");
        } catch (IOException e) {
            System.out.println("超时");
        }
    }