简单总结一下InetAddress对象产生的几种方式
代码
package com.demo;import java.net.InetAddress;import java.net.UnknownHostException;/** * ?* @author Lynn * 1、getByName()和getByAddress()方法的使用； * 2、getLocalHost()方法； * 3、getLoopbackAddress()方法； * 4、注意第三种方式和第四种方式； * */public class Demo01 { ???public static void main(String[] args) throws UnknownHostException { ???????System.out.println("-----第一种方式-------"); ???????// 第一种方法：通过域名来获取IP对象（包括域名+IP地址） ???????InetAddress inet1 = InetAddress.getByName("www.baidu.com"); ???????System.out.println("IP对象：" + inet1); ???????// 获取对应的IP ???????System.out.println("域名：" + inet1.getHostName()); ???????System.out.println("IP地址：" + inet1.getHostAddress()); ???????System.out.println("-----第二种方式-------"); ???????// 第二种方法：请注意后面byte数组的写法(参看：https://blog.csdn.net/ling376962380/article/details/72824880) ???????InetAddress inet2 = InetAddress.getByAddress("www.baidu.com", new byte[] { (byte) 180, 97, 33, 107 }); ???????System.out.println("IP对象：" + inet2); ???????System.out.println("域名：" + inet2.getHostName()); ???????System.out.println("IP地址：" + inet2.getHostAddress()); ???????System.out.println("-----第三种方式-------"); ???????// 第三种方法：通过IP地址字符串 ???????InetAddress inet3 = InetAddress.getByName("180.97.33.107"); ???????System.out.println("IP对象：" + inet3); ???????System.out.println("域名：" + inet3.getHostName()); ???????System.out.println("IP地址：" + inet3.getHostAddress()); ???????System.out.println("-----第四种方式-------"); ???????// 第四种方法：通过IP地址字符串 ???????InetAddress inet4 = InetAddress.getByAddress(new byte[] { (byte) 180, 97, 33, 107 }); ???????System.out.println("IP对象：" + inet4); ???????System.out.println("域名：" + inet4.getHostName()); ???????System.out.println("IP地址：" + inet4.getHostAddress()); ???????????????System.out.println("------获取本机的----"); ???????InetAddress inet5 = InetAddress.getLocalHost(); ???????System.out.println("IP对象：" + inet5); ???????System.out.println("域名：" + inet5.getHostName()); ???????System.out.println("IP地址：" + inet5.getHostAddress()); ???????????????System.out.println("----获取回环地址----"); ???????InetAddress inet6 = InetAddress.getLoopbackAddress(); ???????System.out.println("IP对象：" + inet6); ???????System.out.println("域名：" + inet6.getHostName()); ???????System.out.println("IP地址：" + inet6.getHostAddress()); ???????????????????}}运行结果
补充
关于IP地址以byte数组表示的时候使用new byte[] { (byte) 180, 97, 33, 107 })这种方式不会出错的解释请参看https://blog.csdn.net/ling376962380/article/details/72824880
InetAddress对象的获取方式
原文地址：https://www.cnblogs.com/SnailsRunning/p/10111060.html