javaSE InetAddress, 获取IP地址和主机名, getHostAddress()

Demo.java：

package cn.xxx.demo;

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

public class Demo {
	public static void main(String[] args)throws UnknownHostException {
		function_1();
	}

	public static void function_1()throws UnknownHostException {
		// 通过主机名获取InetAddress对象。 主机名也可以是IP地址形式
		InetAddress inet = InetAddress.getByName("www.baidu.com"); // 通过主机名获取InetAddress对象
		System.out.println(inet);  // www.baidu.com/61.135.169.125
	}
	
	public static void function() throws UnknownHostException{
		// 获取本地主机
		InetAddress inet = InetAddress.getLocalHost(); // 静态方法获取InetAddress对象。
		//InetAddress就是主机名,和IP地址
		System.out.println(inet.toString()); // zhangSan/192.168.61.82
		
		String ip = inet.getHostAddress();  // 192.168.61.82   获取IP地址
		String name = inet.getHostName();   // zhangSan  获取主机名
		
	}
}