ip网段限制

public class Test {

       boolean i;

   

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

   

           if (ipSection == null)

   

                throw new NullPointerException("IP段不能为空！");

   

          if (ip == null)

   

               throw new NullPointerException("IP不能为空！");

   

          ipSection = ipSection.trim();

   

            ip = ip.trim();

   

          final String REGX_IP = "((25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]\\d|\\d)\\.){3}(25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]\\d|\\d)";

   

            final String REGX_IPB = REGX_IP + "\\-" + REGX_IP;

   

            if (!ipSection.matches(REGX_IPB) || !ip.matches(REGX_IP))

   

               return false;

   

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

   

            String[] sips = ipSection.substring(0, idx).split("\\.");

   

            String[] sipe = ipSection.substring(idx + 1).split("\\.");

   

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

   

            long ips = 0L, ipe = 0L, ipt = 0L;

   

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

   

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

   

              ipe = ipe << 8 | Integer.parseInt(sipe[i]);

   

               ipt = ipt << 8 | Integer.parseInt(sipt[i]);

   

          }

   

            if (ips > ipe) {

   

               long t = ips;

   

               ips = ipe;

   

               ipe = t;

   

           }

   

            return ips <= ipt && ipt <= ipe;

   

       }

   

  

   

       public static void main(String[] args) {

   

           if (ipIsValid("102.168.1.1-192.168.1.100", "192.168.1.54")) {

   

                System.out.println("ip属于该网段");

   

           } else

   

             System.out.println("ip不属于该网段");

   

       }

       在其他类中调用并判断 if(Test.ipIsValid("102.168.1.1-192.168.1.133", ip))