获取IP地址

public class Demo {
    public static void main(String[] args) {
        try {
            InetAddress local = InetAddress.getLocalHost();//获取本地主机对象
            System.out.println("计算机名：" + local.getHostName());//本地主机名
            System.out.println("本地IP：" + local.getHostAddress());//本地主机IP地址
            InetAddress baidu = InetAddress.getByName("www.baidu.com");//获取百度服务器对象
            System.out.println("百度IP：" + baidu.getHostAddress());
            InetAddress[] baidus = InetAddress.getAllByName("www.baidu.com");
            for (InetAddress ad : baidus) {//大型网站有多个IP，减少宕机损失
                System.out.println("百度IP：" + ad.getHostAddress());//输出所有IP
            }
        } catch (UnknownHostException e1) {
            e1.printStackTrace();
        }
    }
}