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  • 获取IP地址

    参考CORE JAVA。

    在JAVA中,InetAddress类用于操作与IP地址相关的内容,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.

    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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  • 原文地址:https://www.cnblogs.com/jediael/p/4304200.html
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