获取本地IP的Java实现

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


public class HostAddress {
    public static void main(String args[]){
        InetAddress addr = null;
        try {
            addr = InetAddress.getLocalHost();
        } catch (UnknownHostException e) {
            System.out.println("本机没有IP");
            e.printStackTrace();
        }
        String ip = addr.getHostAddress();
        String address = addr.getHostName();

        System.out.println(ip);
        System.out.println(address);
    }
}