JAVA获取本地MAC地址

 MAC地址也就是物理地址

所以cmd电脑查看

一、自定义方法获取本地mac地址

/**
     * 获取本地mac地址
     * 注意：物理地址是48位，别和ipv6搞错了
     * @param inetAddress
     * @return 本地mac地址
     */
    private static String getLocalMac(InetAddress inetAddress) {
        try {
            //获取网卡，获取地址
            byte[] mac = NetworkInterface.getByInetAddress(inetAddress).getHardwareAddress();
            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);
                if (str.length() == 1) {
                    sb.append("0" + str);
                } else {
                    sb.append(str);
                }
            }
            return sb.toString();
        } catch (Exception exception) {
        }
        return null;
    }

二、第三方工具类获取本地mac地址

需要引入hutool依赖

<dependency>
     <groupId>cn.hutool</groupId>
       <artifactId>hutool-all</artifactId>
        <version>5.4.0</version>
</dependency>

InetAddress inetAddress = InetAddress.getLocalHost();

第二种方式：利用hutool工具类中的封装方法获取本机mac地址

String localMacAddress2 = NetUtil.getMacAddress(inetAddress);
System.out.println("localMacAddress2 = " + localMacAddress2);

三、两种方法运行
   

public static void main(String[] args) throws UnknownHostException {
        InetAddress inetAddress = InetAddress.getLocalHost();
 
        //第一种方式：利用自己写的方法获取本地mac地址
        String localMacAddress1 = getLocalMac(inetAddress);
        System.out.println("localMacAddress1 = " + localMacAddress1);
        
        //第二种方式：利用hutool工具类中的封装方法获取本机mac地址
        String localMacAddress2 = NetUtil.getMacAddress(inetAddress);
        System.out.println("localMacAddress2 = " + localMacAddress2);
    }

结果