如何在Java中从客户端获取uuid或mac地址？

我写了自己的方法来解决我的问题。在这里，是否有人需要代码来查找同一网络中的MAC地址。在Win 7和Mac OS X
10.8.2上无需任何管理员权限即可为我工作

Pattern macpt = null;private String getMac(String ip) {    // Find OS and set command according to OS    String OS = System.getProperty("os.name").toLowerCase();    String[] cmd;    if (OS.contains("win")) {        // Windows        macpt = Pattern     .compile("[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+");        String[] a = { "arp", "-a", ip };        cmd = a;    } else {        // Mac OS X, Linux        macpt = Pattern     .compile("[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+");        String[] a = { "arp", ip };        cmd = a;    }    try {        // Run command        Process p = Runtime.getRuntime().exec(cmd);        p.waitFor();        // read output with BufferedReader        BufferedReader reader = new BufferedReader(new InputStreamReader(     p.getInputStream()));        String line = reader.readLine();        // Loop trough lines        while (line != null) { Matcher m = macpt.matcher(line); // when Matcher finds a Line then return it as result if (m.find()) {     System.out.println("Found");     System.out.println("MAC: " + m.group(0));     return m.group(0); } line = reader.readLine();        }    } catch (IOException e1) {        e1.printStackTrace();    } catch (InterruptedException e) {        e.printStackTrace();    }    // Return empty string if no MAC is found    return "";}