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) { // IPV4 ip = 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：
