import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**
 *
 * 获取MAC地址
 *
 * @author
 *
 * 2011-12
 *
 */

public class GetMacAddress {

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)