Sugo

     獲取網卡物理地址：
         String cmd="ipconfig /all";
         Process p=Runtime.getRuntime().exec(cmd);
         BufferedReader bis=new BufferedReader(new InputStreamReader(p.getInputStream()));
         String line="";
         while((line=bis.readLine())!=null){
           if(line.indexOf("Physical Address")!=-1){
             Pattern ptn=Pattern.compile("((\\w{2})|(\\d{2})|(\\w+\\d+)|(\\d+\\w+))-.*");
              Matcher m=ptn.matcher(line.trim());
              while(m.find()){
                System.out.println("get mac  "+m.group());
              }
           }
          }