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【Java】根据IP地址获取用户的MAC地址

作者:osxinzhong / 发布于2015/10/19/ 636


	/**
	 * 根据IP地址获取mac地址
	 * @param ipAddress 127.0.0.1
	 * @return
	 * @throws SocketException
	 * @throws UnknownHostException
	 */
	 public static String getLocalMac(String ipAddress) throws SocketException,
	 UnknownHostException {
	 // TODO Auto-generated method stub
	 String str = "";
	 String macAddress = "";
	 final String LOOPBACK_ADDRESS = "127.0.0.1";
	 // 如果为127.0.0.1,则获取本地MAC地址。
	 if (LOOPBACK_ADDRESS.equals(ipAddress)) {
	 InetAddress inetAddress = InetAddress.getLocalHost();
	 // 貌似此方法需要JDK1.6。
	 byte[] mac = NetworkInterface.getByInetAddress(inetAddress)
	 .getHardwareAddress();
	 // 下面代码是把mac地址拼装成String
	 StringBuilder sb = new StringBuilder();
	 for (int i = 0; i < mac.length; i++) {
	 if (i != 0) {
	 sb.append("-");
	 }
	 // mac[i] & 0xFF 是为了把byte转化为正整数
	 String s = Integer.toHexString(mac[i] & 0xFF);
	 sb.append(s.length() == 1 ? 0 + s : s);
	 }
	 // 把字符串所有小写字母改为大写成为正规的mac地址并返回
	 macAddress = sb.toString().trim().toUpperCase();
	 return macAddress;
	 } else {
	 // 获取非本地IP的MAC地址
	 try {
	 System.out.println(ipAddress);
	 Process p = Runtime.getRuntime()
	 .exec("nbtstat -A " + ipAddress);
	 System.out.println("===process=="+p);
	 InputStreamReader ir = new InputStreamReader(p.getInputStream());
	
	 BufferedReader br = new BufferedReader(ir);
	
	 while ((str = br.readLine()) != null) {
	 if(str.indexOf("MAC")>1){
	 macAddress = str.substring(str.indexOf("MAC")+9, str.length());
	 macAddress = macAddress.trim();
	 System.out.println("macAddress:" + macAddress);
	 break;
	 }
	 }
	 p.destroy();
	 br.close();
	 ir.close();
	 } catch (IOException ex) {
	 }
	 return macAddress;
	 }
	 }

试试其它关键字

　MAC地址　　 IP地址　

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