SSH中，使用Filter拦截直接访问JSP页面！

话不多说，直接上代码

创建一个Filter类

 package com.weibo.util;

 import java.io.IOException;

 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
 import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 /**
  * 原理是，将所有的地址中包含JSP的访问拦截，将访问重定位到网站的跟目录
  * @author yu
  */
 public class URLFilter implements Filter{

     @Override
     public void destroy() {
         // TODO Auto-generated method stub

     }

     @Override
     public void doFilter(ServletRequest request, ServletResponse response,
             FilterChain filterch) throws IOException, ServletException {
         // TODO Auto-generated method stub
         HttpServletRequest httpreq = (HttpServletRequest) request;
         StringBuffer url = httpreq.getRequestURL();
         if(url.indexOf("jsp") > 0)   //判断地址中是否包含"JSP"
         {
             HttpServletResponse httpres = (HttpServletResponse) response;
             httpres.sendRedirect(httpreq.getContextPath());  //跳转到网站根目录，也可以根据自己的需要重定位到自己的Action
             return;
         }else{ //不包含JSP，则继续执行
             filterch.doFilter(request, response);
         }

     }

     @Override
     public void init(FilterConfig arg0) throws ServletException {
         // TODO Auto-generated method stub

     }

 }

在web.xml中配置Filter，注意：应将此过滤器放在Struts的前面

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
   <display-name>final</display-name>
   <welcome-file-list>
     <welcome-file>index.html</welcome-file>
     <welcome-file>index.htm</welcome-file>
     <welcome-file>index.jsp</welcome-file>
     <welcome-file>default.html</welcome-file>
     <welcome-file>default.htm</welcome-file>
     <welcome-file>default.jsp</welcome-file>
   </welcome-file-list>
      <filter>
           <filter-name>URLfilter</filter-name>
          <filter-class>com.weibo.util.URLFilter</filter-class>
     </filter>
     <filter-mapping>
            <filter-name>URLfilter</filter-name>
             <url-pattern>/*</url-pattern>
     </filter-mapping>

   <filter>
      <filter-name>struts</filter-name>
      <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
   </filter>
   <filter-mapping>
      <filter-name>struts</filter-name>
      <url-pattern>/*</url-pattern>
   </filter-mapping>

 </web-app>