Java 获取广播IP地址。
获取广播IP地址。
实例源码：
源代码：
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/*3
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* Copyright (c) 2004 by Cosylab5
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*7
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* The full license specifying the redistribution, modification, usage and other9
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* rights and obligations is included with the distribution of this project in11
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* the file "LICENSE-CAJ". If the license is not included visit Cosylab web site,13
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* <http://www.cosylab.com>.15
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*17
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* THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND, NOT EVEN THE19
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* IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE, ASSUMES21
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* _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE RESULTING FROM THE USE, MODIFICATION,23
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* OR REDISTRIBUTION OF THIS SOFTWARE.25
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*/27
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//package com.nowjava;29
/**30
nowjava31
**/32
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import java.net.InetSocketAddress;34
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import java.net.InterfaceAddress;36
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import java.net.NetworkInterface;38
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import java.net.SocketException;40
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import java.util.ArrayList;42
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import java.util.Enumeration;44
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import java.util.Iterator;46
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import java.util.List;48
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public class Main {51
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public static void main(String[] argv) throws Exception {53
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int port = 2;//nowjava.com - 时 代 Java 提供55
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System.out.println(java.util.Arrays57
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.toString(getBroadcastAddresses(port)));59
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}61
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/**64
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* Get broadcast addresses.66
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* @param port port to be added to get socket address.68
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* @return array of broadcast addresses with given port.70
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*/72
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public static InetSocketAddress[] getBroadcastAddresses(int port) {74
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Enumeration nets;76
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try {78
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nets = NetworkInterface.getNetworkInterfaces();80
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} catch (SocketException se) {82
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// fallback84
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return new InetSocketAddress[] { new InetSocketAddress(86
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"255.255.255.255", port) };88
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}90
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ArrayList list = new ArrayList(10);93
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while (nets.hasMoreElements()) {96
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NetworkInterface net = (NetworkInterface) nets.nextElement();98
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//if (net.isUp())100
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{102
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List interfaceAddresses = net.getInterfaceAddresses();104
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Iterator iter = interfaceAddresses.iterator();106
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while (iter.hasNext()) {108
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InterfaceAddress addr = (InterfaceAddress) iter.next();110
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if (addr.getBroadcast() != null) {112
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