java获取本机mac物理地址

package com.simonjia.util.other;

import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class MacTools {
    /***因为一台机器不一定只有一个网卡呀，所以返回的是数组是很合理的***/
    public static List<String> getMacList() throws Exception {
        java.util.Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
        StringBuilder sb = new StringBuilder();
        ArrayList<String> tmpMacList = new ArrayList<>();
        while (en.hasMoreElements()) {
            NetworkInterface iface = en.nextElement();
            List<InterfaceAddress> addrs = iface.getInterfaceAddresses();
            for (InterfaceAddress addr : addrs) {
                InetAddress ip = addr.getAddress();
                NetworkInterface network = NetworkInterface.getByInetAddress(ip);
                if (network == null) {
                    continue;
                }
                byte[] mac = network.getHardwareAddress();
                if (mac == null) {
                    continue;
                }
                sb.delete(0, sb.length());
                for (int i = 0; i < mac.length; i++) {
                    sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
                }
                tmpMacList.add(sb.toString());
            }
        }
        if (tmpMacList.size() <= 0) {
            return tmpMacList;
        }
        /***去重，别忘了同一个网卡的ipv4,ipv6得到的mac都是一样的，肯定有重复，下面这段代码是。。流式处理***/
        List<String> unique = tmpMacList.stream().distinct().collect(Collectors.toList());
        return unique;
    }

    public static void main(String[] args) throws Exception {
        long a = System.currentTimeMillis();
        System.out.println("进行 multi net address 测试===》");
        List<String> macs = getMacList();
        long b = System.currentTimeMillis();
        System.out.println("本机的mac网卡的地址有：" + macs);
        System.out.println("总耗时----" + (b - a) + "-----ms");
    }
}

这个只能拿到服务本机的mac地址，对于远程请求获取请求者的mac信息并不适用……

获取来访者ip信息----：https://www.cnblogs.com/SimonHu1993/p/11015069.html

博主原文太长，只取精华-0-  详细可见：https://blog.csdn.net/cdnight/article/details/86741265