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package com.xindatai.common.util;import java.io.InputStream;import java.util.regex.Matcher;import java.util.regex.Pattern;public class Lime {    public static void main(String[] args) throws Exception {        String mac = getMacAdderss("192.168.10.10");        System.out.println(mac);    }        /**     * 获取mac地址     *      * @author Liang     *     * 2017年4月26日     */    private static String getMacAdderss(String ip) throws Exception {        if(ping(ip)){            String result = command("arp -a " + ip);            String regExp = "([0-9A-Fa-f]{2})([-:][0-9A-Fa-f]{2}){5}";            Pattern pattern = Pattern.compile(regExp);            Matcher matcher = pattern.matcher(result);            StringBuilder mac = new StringBuilder();//            对字符串进行匹配,匹配到的字符串可以在任何位置            while(matcher.find()){//                返回匹配到的子字符串                String temp = matcher.group();                mac.append(temp);            }            return mac.toString();        }        return null;    }    /**     * ping ip     *      * @param ip     *      * @return     *      * @author Liang     *     * 2017年4月26日     */    private static boolean ping(String ip) throws Exception {        String os = getOsName();        String ping = "";        if(os.startsWith("Windows")){            ping = "ping " + ip + " -n 2";        }else if(os.startsWith("Linux")){            ping = "ping " + ip + " -c 2";        }        String result = command(ping);        if(result.contains("TTL") || result.contains("ttl")){            return true;        }        return false;    }    /**     * 执行单条指令     *      * @param cmd 命令     *      * @return 执行结果     *      * @author Liang     *     * 2017年4月26日     */    private static String command(String cmd) throws Exception {        Process process = Runtime.getRuntime().exec(cmd);        process.waitFor();        InputStream in = process.getInputStream();        StringBuilder result = new StringBuilder();        byte[] data = new byte[256];        while(in.read(data) != -1){//            操作系统中的编码方式            String encoding = System.getProperty("sun.jnu.encoding");            result.append(new String(data,encoding));        }        return result.toString();    }    private static String getOsName() {        return System.getProperty("os.name");    }}

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