SSH中，使用Filter攔截直接訪問JSP頁面！

話不多說，直接上代碼

創建一個Filter類

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，將所有的地址中包含JSP的訪問攔截，將訪問重定位到網站的跟目錄
 * @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)   //判斷地址中是否包含"JSP"
        {
            HttpServletResponse httpres = (HttpServletResponse) response;
            httpres.sendRedirect(httpreq.getContextPath());  //跳轉到網站根目錄，也可以根據自己的需要重定位到自己的Action
            return;
        }else{ //不包含JSP，則繼續執行
            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：應將此過濾器放在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>