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Java 检索第一个非
检索正在运行的计算机的第一个非环回IP地址（即，过滤出127.0.0.1地址）。
实例源码：
源代码：
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/**3
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* Copyright (c) Codice Foundation5
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* 7
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* This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser9
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* General Public License as published by the Free Software Foundation, either version 3 of the11
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* License, or any later version.13
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* 15
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without17
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU19
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* Lesser General Public License for more details. A copy of the GNU Lesser General Public License21
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* is distributed along with this program and can be found at23
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* <http://www.gnu.org/licenses/lgpl.html>.25
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* 27
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**/29
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//package com.nowjava;31
/**32
* 时 代 J a v a - nowjava.com 提 供 33
**/34
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import java.net.Inet4Address;36
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import java.net.Inet6Address;38
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import java.net.InetAddress;40
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import java.net.NetworkInterface;42
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import java.net.SocketException;44
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import java.util.Enumeration;46
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public class Main {49
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public static void main(String[] argv) throws Exception {51
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System.out.println(getFirstNonLoopbackAddress());53
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}/** 来 自 N o w J a v a . c o m**/55
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/**58
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* Retrieves the first non-loopback IP address, (i.e., filters out 127.0.0.1 addresses) for60
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* machine your are running on.62
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* 64
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* @return66
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* @throws SocketException68
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*/70
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public static InetAddress getFirstNonLoopbackAddress()72
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throws SocketException {74
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return getFirstNonLoopbackAddress(true, false);76
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}78
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/**81
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* @param preferIpv483
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* @param preferIPv685
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* @return87
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* @throws SocketException89
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*/91
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public static InetAddress getFirstNonLoopbackAddress(93
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boolean preferIpv4, boolean preferIPv6) throws SocketException {95
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Enumeration en = NetworkInterface.getNetworkInterfaces();97
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while (en.hasMoreElements()) {99
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NetworkInterface i = (NetworkInterface) en.nextElement();101
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for (Enumeration en2 = i.getInetAddresses(); en2103
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.hasMoreElements();) {105
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InetAddress addr = (InetAddress) en2.nextElement();107
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if (!addr.isLoopbackAddress()) {109
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if (addr instanceof Inet4Address) {111
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if (preferIPv6) {113
/**代码未完, 请加载全部代码(NowJava.com).**/执行结果：
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