java获取mac地址工具类

来源：互联网发布：配电网工程设计软件编辑：程序博客网时间：2024/05/21 08:35

java代码在服务器端获取客户端用户的mac地址，服务器端从request中可获取到客户端的ip，再根据ip去获取mac地址。

参考来源：
http://blog.csdn.net/yztezhl/article/details/50058263

代码如下：

public class GetMacAddress{        /**     * 执行命令     * @param in -     * @return      */    public static String callCmd(String[] cmd) {         String result = "";         String line = "";         try {           Process proc = Runtime.getRuntime().exec(cmd);           InputStreamReader is = new InputStreamReader(proc.getInputStream());           BufferedReader br = new BufferedReader (is);           while ((line = br.readLine ()) != null) {           result += line;           }         }         catch(Exception e) {           e.printStackTrace();         }         return result;       }     /**       *       * @param cmd 第一个命令       * @param another 第二个命令       * @return  第二个命令的执行结果       */      public static String callCmd(String[] cmd,String[] another) {         String result = "";         String line = "";         try {           Runtime rt = Runtime.getRuntime();           Process proc = rt.exec(cmd);           proc.waitFor(); //已经执行完第一个命令，准备执行第二个命令           proc = rt.exec(another);           InputStreamReader is = new InputStreamReader(proc.getInputStream());           BufferedReader br = new BufferedReader (is);           while ((line = br.readLine ()) != null) {             result += line;           }         }         catch(Exception e) {           e.printStackTrace();         }         return result;       }   /**      *      * @param ip 目标ip,一般在局域网内      * @param sourceString 命令处理的结果字符串      * @param macSeparator mac分隔符号      * @return mac地址，用上面的分隔符号表示      */     public static String filterMacAddress(final String ip, final String sourceString,final String macSeparator) {        String result = "";        String regExp = "((([0-9,A-F,a-f]{1,2}" + macSeparator + "){1,5})[0-9,A-F,a-f]{1,2})";        Pattern pattern = Pattern.compile(regExp);        Matcher matcher = pattern.matcher(sourceString);        while(matcher.find()){          result = matcher.group(1);          if(sourceString.indexOf(ip) <= sourceString.lastIndexOf(matcher.group(1))) {            break; //如果有多个IP,只匹配本IP对应的Mac.          }        }       return result;      }   /**      *      * @param ip 目标ip      * @return  Mac Address      *      */     public static String getMacInWindows(final String ip){        String result = "";        String[] cmd = {            "cmd",            "/c",            "ping " + ip            };        String[] another = {            "cmd",            "/c",            "arp -a"           };          try{             String cmdResult = callCmd(cmd,another);              result = filterMacAddress(ip,cmdResult,"-");              return result;         }catch(Exception e){             e.printStackTrace();             return null;         }     }      /**       * @param ip 目标ip       * @return  Mac Address       *       */      public static String getMacInLinux(final String ip){         String result = "";         String[] cmd = {             "/bin/sh",             "-c",             "ping " + ip + " -c 2 && arp -a"            };         try{            String cmdResult = callCmd(cmd);             result = filterMacAddress(ip,cmdResult,":");             return result;         }catch(Exception e){            e.printStackTrace();            return null;        }      }    /**     * 获取MAC地址      * @return 返回MAC地址     */     public static String getMacAddress(String ip){       String macAddress = "";       macAddress = getMacInWindows(ip).trim();       if(macAddress==null||"".equals(macAddress)){         macAddress = getMacInLinux(ip).trim();       }       return macAddress;     }  //做个测试     public static void main(String[] args) {             System.out.println(getMacAddress("106.121.6.133"))      }}

其实，是通过arp命令获取到mac地址。首先如果ip地址可以ping通，系统会缓存ip和mac，然后通过arp命令获取缓存中请求过的ip和mac，进行处理，获取mac地址。

0 0