设置不使用缓存的过滤器（ClearCacheFilter）

功能描述

        将HTTP响应头信息中的缓存参数设置为不进行缓存。

使用方法

        在 java web 项目的 web.xml 文件中添加如下代码。

 <!--设置不使用缓存的过滤器配置  开始 -->
 <filter>
  <filter-name>ClearCacheFilter</filter-name>
  <filter-class>com.hmw.filter.ClearCacheFilter</filter-class>
 </filter>
 
 <filter-mapping>
  <filter-name>ClearCacheFilter</filter-name>
  <url-pattern>*.do</url-pattern>
 </filter-mapping>
 <filter-mapping>
  <filter-name>ClearCacheFilter</filter-name>
  <url-pattern>*.jsp</url-pattern>
 </filter-mapping>
 <!--设置不使用缓存的过滤器配置  结束 -->

过滤器源码

package com.hmw.filter;

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.HttpServletResponse;

/**
 * 使浏览器不缓存页面信息的过滤器

 * 创建日期：2012-01-10
 * 
 * @author 

 */
public class ClearCacheFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        httpResponse.setHeader("Cache-Control", "no-cache");
        httpResponse.setHeader("Pragma", "no-cache");
        httpResponse.setDateHeader("Expires", -1);
        filterChain.doFilter(request, response);
    }

    @Override
    public void destroy() {
    }
}