package Delfstack;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class Get_IPAddress {
    public static void main(String[] args) {
        InetAddress My_IP;
        try {
            My_IP = InetAddress.getLocalHost();
            System.out.println("The IP address of the Current Device is: " + My_IP.getHostAddress());
        }
        catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

public static void main(String[] args) {
        try {
            //用 getLocalHost() 方法創(chuàng)建的InetAddress的對象
            InetAddress address = InetAddress.getLocalHost();
            System.out.println(address.getHostName());//主機名
            System.out.println(address.getCanonicalHostName());//主機別名
            System.out.println(address.getHostAddress());//獲取IP地址
            System.out.println("===============");
            //用域名創(chuàng)建 InetAddress對象
            InetAddress address1 = InetAddress.getByName("www.wodexiangce.cn");
            //獲取的是該網站的ip地址，如果我們所有的請求都通過nginx的，所以這里獲取到的其實是nginx服務器的IP地址
            System.out.println(address1.getHostName());//www.wodexiangce.cn
            System.out.println(address1.getCanonicalHostName());//124.237.121.122
            System.out.println(address1.getHostAddress());//124.237.121.122
            System.out.println("===============");
            //用IP地址創(chuàng)建InetAddress對象
            InetAddress address2 = InetAddress.getByName("220.181.111.188");
            System.out.println(address2.getHostName());//220.181.111.188
            System.out.println(address2.getCanonicalHostName());//220.181.111.188
            System.out.println(address2.getHostAddress());//220.181.111.188
            System.out.println("===============");
            //根據主機名返回其可能的所有InetAddress對象
            InetAddress[] addresses = InetAddress.getAllByName("www.baidu.com");
            for (InetAddress addr : addresses) {
                System.out.println(addr);
                //www.baidu.com/220.181.111.188
                //www.baidu.com/220.181.112.244
            }
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }

　/**
      * 獲取服務器IP地址
      * @return
      */
     @SuppressWarnings("unchecked")
     public static String  getServerIp(){
         String SERVER_IP = null;
         try {
             Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces();
             InetAddress ip = null;
             while (netInterfaces.hasMoreElements()) {
                 NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement();
                 ip = (InetAddress) ni.getInetAddresses().nextElement();
                 SERVER_IP = ip.getHostAddress();
                 if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
                         && ip.getHostAddress().indexOf(":") == -1) {
                     SERVER_IP = ip.getHostAddress();
                     break;
                 } else {
                     ip = null;
                 }
             }
         } catch (SocketException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return SERVER_IP;
     }

//獲取服務器的ip
@Value("${constant.ipHost}")
private String ipHost;