``` /** * @author 张跃帅 * @Description: 获取MAC地址-工具 * @date 2020/08/12 */ @Slf4j public class MacUtil { /** * 获取网卡地址 */ public static String getMacAddress() { // 变量 String macAddress = null; try { // 获取用户主机地址 InetAddress inetAddress = InetAddress.getLocalHost(); // 获取mac地址 macAddress = NetUtil.getMacAddress(inetAddress); } catch (UnknownHostException e) { log.error("获取MAC地址失败"); } // 返回 return (macAddress).toUpperCase(); } }