java如何获取本地ip地址

在Java中获取本地IP地址可以通过以下方式之一：

import java.net.InetAddress;import java.net.UnknownHostException;public class Main {    public static void main(String[] args) {        try {            InetAddress localhost = InetAddress.getLocalHost();            System.out.println("Local IP Address: " + localhost.getHostAddress());        } catch (UnknownHostException e) {            e.printStackTrace();        }    }}

import java.net.InetAddress;import java.net.NetworkInterface;import java.util.Enumeration;public class Main {    public static void main(String[] args) {        try {            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();            while (networkInterfaces.hasMoreElements()) {                NetworkInterface networkInterface = networkInterfaces.nextElement();                Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();                while (inetAddresses.hasMoreElements()) {                    InetAddress inetAddress = inetAddresses.nextElement();                    if (!inetAddress.isLoopbackAddress() && inetAddress.isSiteLocalAddress()) {                        System.out.println("Local IP Address: " + inetAddress.getHostAddress());                    }                }            }        } catch (Exception e) {            e.printStackTrace();        }    }}

这两种方法都可以获取本地IP地址，第一种方法使用了InetAddress类的getLocalHost()方法，直接获取本地IP地址，而第二种方法通过遍历所有网络接口和对应的InetAddress来获取本地IP地址。