Java 获取与特定IP地址关联的网络mac地址

/** 时代Java公众号 - N o w J a  v a . c o m 提供 **/

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/* The MIT License (MIT)

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Copyright (c) 2012 Jerome Wagener

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Permission is hereby granted, free of charge, to any person obtaining a copy of

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this software and associated documentation files (the "Software"), to deal in

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the Software without restriction, including without limitation the rights to

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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

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the Software, and to permit persons to whom the Software is furnished to do so,

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subject to the following conditions:

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The above copyright notice and this permission notice shall be included in all

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copies or substantial portions of the Software.

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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS

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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR

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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.*/

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//package com.nowjava;

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import java.net.InetAddress;

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import java.net.NetworkInterface;

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import java.net.SocketException;

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import java.net.UnknownHostException;

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public class Main {

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    public static void main(String[] argv) throws Exception {

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        String ipAddress = "nowjava.com";

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        System.out.println(getNetworkMacAddress(ipAddress));

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    }

/* 来 自 n o w j a v a . c o m - 时代Java*/

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    /** Get the network mac address associated with a particular IP address

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     * @param ipAddress the IP address for which the mac address is requested

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     * @return the network mac address

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     * @throws UnknownHostException 

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     * @throws SocketException */

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    public static String getNetworkMacAddress(String ipAddress)

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            throws UnknownHostException, SocketException {

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        String networkMacAddressAsString = "";

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        InetAddress address = InetAddress.getByName(ipAddress);

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        NetworkInterface networkInterface = NetworkInterface

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                .getByInetAddress(address);

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        if (networkInterface != null) {

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            byte[] networkMacAddress = networkInterface

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                    .getHardwareAddress();

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            if (networkMacAddress != null) {

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                for (int i = 0; i < networkMacAddress.length; i++) {

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