IP段匹配

[java]代码库

public class IpUtil {


   /*验证IP是否属于某个IP段

     *

     * ipSection    IP段（以'-'分隔）

     * ip           所验证的IP号码

     *

     */

   public static boolean ipExistsInRange(String ip,String ipSection) {

        ipSection = ipSection.trim();

        ip = ip.trim();

       int idx = ipSection.indexOf('-');

        String beginIP = ipSection.substring(0, idx);

        String endIP = ipSection.substring(idx + 1);

       return getIp2long(beginIP)<=getIp2long(ip) &&getIp2long(ip)<=getIp2long(endIP);

    }

   public static long getIp2long(String ip) {

        ip = ip.trim();

        String[] ips = ip.split("\\.");

       long ip2long = 0L;

       for (int i = 0; i < 4; ++i) {

            ip2long = ip2long << 8 | Integer.parseInt(ips[i]);

        }

       return ip2long;

    }

    public static long getIp2long2(String ip) {

        ip = ip.trim();

        String[] ips = ip.split("\\.");

       long ip1 = Integer.parseInt(ips[0]);

       long ip2 = Integer.parseInt(ips[1]);

       long ip3 = Integer.parseInt(ips[2]);

       long ip4 = Integer.parseInt(ips[3]);



       long ip2long =1L* ip1 * 256 * 256 * 256 + ip2 * 256 * 256 + ip3 * 256 + ip4;

       return ip2long;

    } 

    public static void main(String[] args){

       //10.10.10.116 是否属于固定格式的IP段10.10.1.00-10.10.255.255

        String ip="10.10.10.116";

        String ipSection="10.10.1.00-10.10.255.255";

       boolean exists=ipExistsInRange(ip,ipSection);

        System.out.println(exists);

        System.out.println(getIp2long(ip));

        System.out.println(getIp2long2(ip));

    }


}