NetUtils 获取本机ip4地址

public class NetworkUtil {

    public static InetAddress getInet4Address() {
        try {
            //获取所有网络接口
            Enumeration<NetworkInterface> allNetworkInterfaces = NetworkInterface.getNetworkInterfaces();
            //遍历所有网络接口
            for (; allNetworkInterfaces.hasMoreElements(); ) {
                NetworkInterface networkInterface = allNetworkInterfaces.nextElement();
                //如果此网络接口为 回环接口 或者 虚拟接口(子接口) 或者 未启用 或者 描述中包含VM
                if (networkInterface.isLoopback() || networkInterface.isVirtual() || !networkInterface.isUp() || networkInterface.getDisplayName().contains("VM")) {
                    //继续下次循环
                    continue;
                }
                for (Enumeration<InetAddress> inetAddressEnumeration = networkInterface.getInetAddresses(); inetAddressEnumeration.hasMoreElements(); ) {
                    InetAddress inetAddress = inetAddressEnumeration.nextElement();
                    //如果此IP不为空
                    if (inetAddress != null) {
                        //如果此IP为IPV4 则返回
                        if (inetAddress instanceof Inet4Address) {
                            return inetAddress;
                        }

                    }
                }


            }
            return null;

        } catch (SocketException e) {
            e.printStackTrace();
            return null;
        }
    }

}