当在给定主机上既不存在适当的DNS查找也不存在/ETC/HOST条目的环境下使用Java.NET.NETAdvuleGeToStOrthMeNe（）方法时，
当在给定主机上既不存在适当的DNS查找也不存在/ETC/HOST条目的环境下使用Java.NET.NETAdvuleGeToStOrthMeNe（）方法时，
实例源码：
源代码：
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/**3
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* Licensed to the Apache Software Foundation (ASF) under one or more5
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* contributor license agreements. See the NOTICE file distributed with7
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* this work for additional information regarding copyright ownership.9
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* The ASF licenses this file to You under the Apache License, Version 2.011
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* (the "License"); you may not use this file except in compliance with13
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* the License. You may obtain a copy of the License at15
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*17
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* http://www.apache.org/licenses/LICENSE-2.019
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*21
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* Unless required by applicable law or agreed to in writing, software23
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* distributed under the License is distributed on an "AS IS" BASIS,25
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.27
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* See the License for the specific language governing permissions and29
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* limitations under the License.31
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*/33
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//package com.nowjava;35
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import java.net.InetAddress;37
/**38
来 自 nowjava39
**/40
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import java.net.UnknownHostException;42
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public class Main {45
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public static void main(String[] argv) throws Exception {47
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System.out.println(getLocalHostName());49
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}51
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/**54
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* When using the {@link java.net.InetAddress#getHostName()} method in an56
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* environment where neither a proper DNS lookup nor an <tt>/etc/hosts</tt>58
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* entry exists for a given host, the following exception will be thrown:60
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* <code>62
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* java.net.UnknownHostException: <hostname>: <hostname>64
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* at java.net.InetAddress.getLocalHost(InetAddress.java:1425)66
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* ...68
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* </code>70
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* Instead of just throwing an UnknownHostException and giving up, this72
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* method grabs a suitable hostname from the exception and prevents the74
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* exception from being thrown. If a suitable hostname cannot be acquired76
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* from the exception, only then is the <tt>UnknownHostException</tt> thrown.78
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*80
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* @return The hostname82
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* @throws UnknownHostException84
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* @see {@link java.net.InetAddress#getLocalHost()}86
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* @see {@link java.net.InetAddress#getHostName()}88
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*/90
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public static String getLocalHostName() throws UnknownHostException {92
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try {// 来自 N o w J a v a . c o m94
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