【简单获取mac地址】

简单记录如何获取mac地址

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

public class MacUtils {
	
	public static String getMac() {

		NetworkInterface network;
		try {
			network = NetworkInterface.getByInetAddress(InetAddress.getLocalHost());
			byte[] mac = network.getHardwareAddress();

			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < mac.length; i++) {
				sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
			}
			return sb.toString();
		} catch (SocketException | UnknownHostException e) {
			e.printStackTrace();
		}
		return null;

	}
}