使用Filter防止浏览器缓存页面或请求结果

时间:2022-10-25 20:02:41

只需要两步:

1、定义一个Filter:

/**
* 防止浏览器缓存页面或请求结果
* @author XuJijun
*
*/
public class NoCacheFilter implements Filter {

@Override
public void destroy(){
}

@Override
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse)resp;

response.setDateHeader("Expires", -1);//告诉浏览器数据可以缓存多长时间,-1或0表示不缓存
response.setHeader("Cache_Control", "no-cache");//支持HTTP 1.1,告诉浏览器要不要缓存数据,如“no-cache”
response.setHeader("Pragma", "no-cache");//支持HTTP 1.0,告诉浏览器要不要缓存数据,如“no-cache”

chain.doFilter(req, resp);
}

@Override
public void init(FilterConfig arg0) throws ServletException{
}
}



2、在Web.xml中定义/注册这个Filter

<!-- 防止浏览器缓存页面或请求结果 -->
<filter>
<filter-name>NoCacheFilter</filter-name>
<filter-class>com.xjj.web.filter.NoCacheFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>NoCacheFilter</filter-name>
<url-pattern>/*</url-pattern> <!-- 根据需要调整url-pattern -->
</filter-mapping>

(原创文章,转载请注明转自Clement-Xu的csdn博客:http://blog.csdn.net/clementad/article/details/46763669