java网络编程-- IP地址

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package cn.usts.edu.lesson01;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class TestInetAddress {
    public static void main(String[] args) {
        try {
            // 获取本机地址
            InetAddress inetAddress = InetAddress.getByName("127.0.0.1");
            System.out.println(inetAddress);

            InetAddress inetAddress02 = InetAddress.getByName("localhost");
            System.out.println(inetAddress02);

            InetAddress inetAddress03 = InetAddress.getLocalHost();
            System.out.println(inetAddress03);

            // 查询网络ip地址
            InetAddress inetAddress01 = InetAddress.getByName("www.baidu.com");
            System.out.println(inetAddress01);

            // 常用方法
            //System.out.println(inetAddress01.getAddress()); 不常用
            System.out.println(inetAddress01.getHostAddress());// ip地址
            System.out.println(inetAddress01.getCanonicalHostName()); // 规范名字
            System.out.println(inetAddress01.getHostName()); // 域名/主机名

        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

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