java 限定網站在指定IP段訪問

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IpUtil.java

package com.datongsoft.wg.common.util;import java.net.InetAddress;import java.net.UnknownHostException;public class IpUtil {    /*驗證IP是否屬於某個IP段     *     * ipSection    IP段（以‘-‘分隔）     * ip           所驗證的IP號碼     *     */   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 int getExists(String ip){    System.out.println("訪問Ip："+ip);    InetAddress addr;    int ext=0;     boolean exists = false;    try {addr = InetAddress.getLocalHost();// String ip=addr.getHostAddress().toString(); //擷取本機ip      //String ipSection="10.163.64.00-10.163.71.255"; String ipSection="192.168.0.1-192.168.0.240";     exists =ipExistsInRange(ip,ipSection);     if(exists){     ext=1;      }     } catch (UnknownHostException e) {e.printStackTrace();}  catch (Exception e) {e.printStackTrace();}  return ext;    }    public static void main(String[] args) throws Exception{       //10.10.10.116 是否屬於固定格式的IP段10.10.1.00-10.10.255.255    /*InetAddress addr = InetAddress.getLocalHost();           String ip=addr.getHostAddress().toString(); //擷取本機ip           String hostName=addr.getHostName().toString(); //擷取本機電腦名稱         //String ip="10.163.10.116";        String ipSection="10.163.64.00-10.163.71.255";       boolean exists=ipExistsInRange(ip,ipSection);        System.out.println(exists);*/    //System.out.println( getExists());        //System.out.println(getIp2long(ip));        //System.out.println(getIp2long2(ip));    } } 

　　

java 限定網站在指定IP段訪問