Java获取本地机器MAC地址详解编程语言

import java.net.NetworkInterface; 
import java.net.SocketException; 
import java.util.Enumeration; 
 
/** 
 *  
 * @author MrWang 
 * 获取客户端MAC地址 
 *  
 * 
 */ 
 
public class MacAddress { 
 
    public static String hexByte(byte b) { 
        String s = "000000" + Integer.toHexString(b); 
        return s.substring(s.length() - 2); 
    } 
 
    public static String getMAC() { 
        Enumeration<NetworkInterface> el; 
        String mac_s = ""; 
        try { 
            el = NetworkInterface.getNetworkInterfaces(); 
            while (el.hasMoreElements()) { 
                byte[] mac = el.nextElement().getHardwareAddress(); 
                if (mac == null) 
                    continue; 
                mac_s = hexByte(mac[0]) + "-" + hexByte(mac[1]) + "-" 
                        + hexByte(mac[2]) + "-" + hexByte(mac[3]) + "-" 
                        + hexByte(mac[4]) + "-" + hexByte(mac[5]); 
                System.out.println(mac_s + "MAC地址"); 
 
            } 
        } catch (SocketException e1) { 
            e1.printStackTrace(); 
        } 
        return mac_s; 
    } 
 
    public static void main(String[] args) { 
        MacAddress m = new MacAddress(); 
        m.getMAC(); 
 
    } 
}