java ip地址相關操作

@(JAVA)[scala]

參考CORE JAVA。

在JAVA中，InetAddress類用于操作與IP地址相關的內容，常用方法如下：

java.net.InetAddress 1.0 ? static InetAddress getByName(String host) ? static InetAddress[] getAllByName(String host) constructs an InetAddress, or an array of all Internetaddresses, for the given host name. ? static InetAddress getLocalHost() constructs an InetAddress for the local host. ? byte[] getAddress() returns an array of bytes that contains thenumerical address. ? String getHostAddress() returns a string with decimal numbers,separated by periods, for example "132.163.4.102". ? String getHostName() returns the host name.

一個例子：

package com.lujinhong.corejava;import java.net.InetAddress; import java.net.UnknownHostException;public class InetAddressTest {public static void main(String[] args) {try {// Get the first argument as the hostname.if (args.length > 0) {InetAddress[] inetAddresses = InetAddress.getAllByName(args[0]);for(InetAddress ia : inetAddresses){System.out.println(ia);}}else{//if No argument, get the localhost ip address.InetAddress localHostAddress = InetAddress.getLocalHost();System.out.println(localHostAddress);System.out.println(localHostAddress);}} catch (UnknownHostException e) {e.printStackTrace();}} }

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