package cn.stylefeng.roses.kernel.rule.util;
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import java.net.InetAddress;
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import java.net.InterfaceAddress;
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import java.net.NetworkInterface;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Collectors;
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/**
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* 获取mac地址的工具类
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*
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* @author fengshuonan
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* @date 2020/11/13 12:59
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*/
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public class MacAddressUtil {
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/**
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* 获取mac的地址信息列表
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* <p>
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* 一台机器不一定有多个网卡，所以返回的是数组
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*
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* @author fengshuonan
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* @date 2020/11/13 13:00
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*/
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public static List<String> getMacList() throws Exception {
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java.util.Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
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StringBuilder sb = new StringBuilder();
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ArrayList<String> tmpMacList = new ArrayList<>();
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while (en.hasMoreElements()) {
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NetworkInterface iface = en.nextElement();
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List<InterfaceAddress> addrs = iface.getInterfaceAddresses();
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for (InterfaceAddress addr : addrs) {
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InetAddress ip = addr.getAddress();
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NetworkInterface network = NetworkInterface.getByInetAddress(ip);
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if (network == null) {
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continue;
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}
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byte[] mac = network.getHardwareAddress();
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if (mac == null) {
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continue;
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}
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sb.delete(0, sb.length());
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for (int i = 0; i < mac.length; i++) {
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sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
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}
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tmpMacList.add(sb.toString());
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}
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}
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if (tmpMacList.size() <= 0) {
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return tmpMacList;
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}
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// 去重，同一个网卡的ipv4,ipv6得到的mac都是一样的
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return tmpMacList.stream().distinct().collect(Collectors.toList());
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}
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}
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