java中获取ip地址

在Java中获取IP地址有多种方法，下面介绍两种常用方法：

方法一：使用InetAddress类

import java.net.InetAddress;
import java.net.UnknownHostException;

public class GetIPAddress {
    public static void main(String[] args) {
        try {
            InetAddress address = InetAddress.getLocalHost();
            System.out.println("IP地址：" + address.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

方法二：使用NetworkInterface类

import java.net.*;
import java.util.Enumeration;

public class GetIPAddress {
    public static void main(String[] args) {
        try {
            Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
            while (interfaces.hasMoreElements()) {
                NetworkInterface ni = interfaces.nextElement();
                Enumeration<InetAddress> addresses = ni.getInetAddresses();
                while (addresses.hasMoreElements()) {
                    InetAddress address = addresses.nextElement();
                    if (address instanceof Inet4Address) {
                        System.out.println("IP地址：" + address.getHostAddress());
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }
}

以上两种方法都可以获取本机的IP地址。