import java.net.InetAddress;import java.net.NetworkInterface;/***@author:*@version:*@description:*/public class Ipconfig {public static void main(String[] args) throws Exception {try {InetAddress ia=InetAddress.getLocalHost();String localname=ia.getHostName();String localip=ia.getHostAddress();System.out.println("本机名称是:"+ localname);System.out.println("本机的ip是 :"+localip);System.out.println("MAC ......... "+getMACAddress(ia)); } catch (Exception e) {e.printStackTrace();}}//获取MAC地址的方法 private static String getMACAddress(InetAddress ia)throws Exception{ //获得网络接口对象(即网卡),并得到mac地址,mac地址存在于一个byte数组中。 byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress(); //下面代码是把mac地址拼装成String StringBuffer sb = new StringBuffer(); for(int i=0;i<mac.length;i++){ if(i!=0){ sb.append("-"); } //mac[i] & 0xFF 是为了把byte转化为正整数 String s = Integer.toHexString(mac[i] & 0xFF); sb.append(s.length()==1?0+s:s); } //把字符串所有小写字母改为大写成为正规的mac地址并返回 return sb.toString().toUpperCase(); } }