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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，

欢马劈雪

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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：

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/**

* Licensed to the Apache Software Foundation (ASF) under one or more

* contributor license agreements.  See the NOTICE file distributed with

* this work for additional information regarding copyright ownership.

* The ASF licenses this file to You under the Apache License, Version 2.0

* (the "License"); you may not use this file except in compliance with

* the License.  You may obtain a copy of the License at

*      http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

//package com.nowjava;

import java.net.InetAddress;
/**
来 自 nowjava
**/

import java.net.UnknownHostException;

public class Main {

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

System.out.println(getLocalHostName());

}

/**

* When using the {@link java.net.InetAddress#getHostName()} method in an

* environment where neither a proper DNS lookup nor an <tt>/etc/hosts</tt>

* entry exists for a given host, the following exception will be thrown:

* <code>

* java.net.UnknownHostException: <hostname>: <hostname>

*  at java.net.InetAddress.getLocalHost(InetAddress.java:1425)

*   ...

* </code>

* Instead of just throwing an UnknownHostException and giving up, this

* method grabs a suitable hostname from the exception and prevents the

* exception from being thrown. If a suitable hostname cannot be acquired

* from the exception, only then is the <tt>UnknownHostException</tt> thrown.

* @return The hostname

* @throws UnknownHostException

* @see {@link java.net.InetAddress#getLocalHost()}

* @see {@link java.net.InetAddress#getHostName()}

public static String getLocalHostName() throws UnknownHostException {

try {// 来自 N o w  J a v a  . c o m
/**代码未完, 请加载全部代码(NowJava.com).**/

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编辑于 2020-03-26 09:23:272020-03-26 09:23:27

实例源码

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