package me.xuzs.sso.test;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.util.Enumeration;public class InternetTest {    public static void main(String[] args) {        String netCard = "lo";        try {            Enumeration
      
        netInterfaces = NetworkInterface                    .getNetworkInterfaces();            if (netInterfaces.hasMoreElements()) {                NetworkInterface netInterface = netInterfaces.nextElement();                if (netCard.equals(netInterface.getName())) {                    // 子接口，linux下会取到父接口？？                    Enumeration
       
         subnetInterfaces = netInterface                            .getSubInterfaces();                    while (subnetInterfaces.hasMoreElements()) {                        NetworkInterface subnetInterface = subnetInterfaces                                .nextElement();                        System.out.println(subnetInterface.getName());                        Enumeration
        
          subaddresses = netInterface                                .getInetAddresses();                        while (subaddresses.hasMoreElements()) {                            InetAddress subaddress = subaddresses.nextElement();                            System.out.println(subaddress.getHostAddress());                        }                    }                    // 打印接口下所有IP                    System.out.println(netInterface.getName());                    Enumeration
         
           addresses = netInterface                            .getInetAddresses();                    while (addresses.hasMoreElements()) {                        InetAddress address = addresses.nextElement();                        System.out.println(address.getHostAddress());                    }                }            }        } catch (SocketException e) {            e.printStackTrace();        }    }}