Java IP Address Check checkIP(String requestIP, String[] ips)

Description

check IP

License

Apache License

Declaration

public static boolean checkIP(String requestIP, String[] ips) 

Method Source Code

//package com.java2s;
/*/*  w  ww  .  ja v  a 2 s  .  c  o  m*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {

    public static boolean checkIP(String requestIP, String[] ips) {
        for (String ip : ips) {
            if (requestIP.equals(ip))
                return true;
            if ((ip.indexOf("-")) >= 0) {//x.x.x.x-x.x.x.x
                String[] ipPart = requestIP.split("\\.");
                String[] ipOpenPart = ip.split("\\-")[0].split("\\.");
                String[] ipEndPart = ip.split("\\-")[1].split("\\.");
                if (ipOpenPart.length != ipPart.length || ipEndPart.length != ipPart.length)
                    continue;
                boolean flag = true;
                for (int i = 0; i < ipPart.length; i++) {
                    if (ipPart[i].compareTo(ipOpenPart[i]) < 0 || ipPart[i].compareTo(ipEndPart[i]) > 0) {
                        flag = false;
                    }
                }
                if (flag)
                    return true;
            }
        }
        return false;
    }
}

Related

1. checkIpAddress(String ipAddress)