Java获取本机MAC地址[转]

时间:2021-06-04 21:17:28

原文地址:https://www.cnblogs.com/hxsyl/p/3422191.html

Java获取本机MAC地址

 

为什么写这个呢?因为前几天看见网上有采用windows命令获取局域网和广域网MAC,查了查可以直接用JDK的方法。

MAC可用于局域网验证,提高安全性。

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

/*
 * 物理地址是48位,别和ipv6搞错了
 */
public class LOCALMAC {

	/**
	 * @param args
	 * @throws UnknownHostException
	 * @throws SocketException
	 */
	public static void main(String[] args) throws UnknownHostException, SocketException {
		// TODO Auto-generated method stub

		//得到IP,输出PC-201309011313/122.206.73.83
		InetAddress ia = InetAddress.getLocalHost();
		System.out.println(ia);
		getLocalMac(ia);
	}

	private static void getLocalMac(InetAddress ia) throws SocketException {
		// TODO Auto-generated method stub
		//获取网卡,获取地址
		byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
		System.out.println("mac数组长度:"+mac.length);
		StringBuffer sb = new StringBuffer("");
		for(int i=0; i<mac.length; i++) {
			if(i!=0) {
				sb.append("-");
			}
			//字节转换为整数
			int temp = mac[i]&0xff;
			String str = Integer.toHexString(temp);
			System.out.println("每8位:"+str);
			if(str.length()==1) {
				sb.append("0"+str);
			}else {
				sb.append(str);
			}
		}
		System.out.println("本机MAC地址:"+sb.toString().toUpperCase());
	}
}

运行结果如下:

PC-201309011313/122.206.73.83
mac数组长度:6
每8位:d0
每8位:27
每8位:88
每8位:1f
每8位:89
每8位:51
本机MAC地址:D0-27-88-1F-89-51