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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<NetworkInterface> 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<NetworkInterface> subnetInterfaces = netInterface .getSubInterfaces(); while (subnetInterfaces.hasMoreElements()) { NetworkInterface subnetInterface = subnetInterfaces .nextElement(); System.out.println(subnetInterface.getName()); Enumeration<InetAddress> 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<InetAddress> addresses = netInterface .getInetAddresses(); while (addresses.hasMoreElements()) { InetAddress address = addresses.nextElement(); System.out.println(address.getHostAddress()); } } } } catch (SocketException e) { e.printStackTrace(); } } }