IP工具类：

//获取本机所有IP地址
public class IpUtil {public static List<String> getLocalIPList() {List<String> ipList = new ArrayList<String>();try {Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();NetworkInterface networkInterface;Enumeration<InetAddress> inetAddresses;InetAddress inetAddress;String ip;while (networkInterfaces.hasMoreElements()) {networkInterface = networkInterfaces.nextElement();inetAddresses = networkInterface.getInetAddresses();while (inetAddresses.hasMoreElements()) {inetAddress = inetAddresses.nextElement();if (inetAddress != null && inetAddress instanceof Inet4Address) { // IPV4ip = inetAddress.getHostAddress();ipList.add(ip);}}}} catch (SocketException e) {e.printStackTrace();}return ipList;}
}

测试类：

List<String> ip = IpUtil.getLocalIPList();
System.out.println("本机Ip为："+ip);

输出结果为：

之后经过测试发现，如果仅获取IPv4，可以直接用JDK获取：

System.out.println("本机IPv4为："+InetAddress.getLocalHost().getHostAddress());

输出结果为：