Java获取本机Mac地址

灰太狼 2021-11-16 08:38 409阅读 0赞

package VerifyLicense;
    
    import java.net.InetAddress;
    import java.net.NetworkInterface;
    import java.net.SocketException;
    import java.net.UnknownHostException;
    import java.util.*;
    
    public class MacUtil {
    
        public static void main(String[] args) {
            System.out.println(getCurrentIpLocalMac());
            System.out.println(getAllLocalMac());
        }
    
        /**
         * 获取当前所用ip的mac地址
         * @return
         */
        public static String getCurrentIpLocalMac(){
            InetAddress ia = null;
            try {
                ia = InetAddress.getLocalHost();
            } catch (UnknownHostException e) {
                e.printStackTrace();
            }
    
            byte[] mac = new byte[0];
            try {
                // NetworkInterface.getByInetAddress(ia) 根据ip信息获取网卡信息
                mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
            } catch (SocketException e) {
                e.printStackTrace();
            }
    
            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;
                // 把无符号整数参数所表示的值转换成以十六进制表示的字符串
                String str = Integer.toHexString(temp);
                if(str.length()==1) {
                    sb.append("0"+str);
                }else {
                    sb.append(str);
                }
            }
    
            return sb.toString();
        }
    
        /**
         * 获取本地所有mac文件
         * @return
         */
        public static List<String> getAllLocalMac(){
            // 使用set集合，避免重复
            Set<String> macs = new HashSet<>();
    
            try {
                Enumeration<NetworkInterface> enumeration = NetworkInterface.getNetworkInterfaces();
                while (enumeration.hasMoreElements()) {
                    StringBuffer stringBuffer = new StringBuffer();
                    NetworkInterface networkInterface = enumeration.nextElement();
                    if (networkInterface != null) {
                        byte[] bytes = networkInterface.getHardwareAddress();
                        if (bytes != null) {
                            for (int i = 0; i < bytes.length; i++) {
                                if (i != 0) {
                                    stringBuffer.append("-");
                                }
                                // 字节转换为整数
                                int tmp = bytes[i] & 0xff;
                                // 把无符号整数参数所表示的值转换成以十六进制表示的字符串
                                String str = Integer.toHexString(tmp);
                                if (str.length() == 1) {
                                    stringBuffer.append("0" + str);
                                } else {
                                    stringBuffer.append(str);
                                }
                            }
                            String mac = stringBuffer.toString();
                            macs.add(mac);
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            // Set 转 List
            List<String> macList = new ArrayList<>(macs);
            return macList;
        }
    
    }