OncePerRequestFilter

OncePerRequestFilter
每一次请求执行一次的过滤器

import org.springframework.web.filter.OncePerRequestFilter;


public class CheckSessionFilter extends OncePerRequestFilter {

protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,     FilterChain filterChain)   throws ServletException, IOException {

                 filterChain.doFilter(request, response);

}
}

相应的web.xml配置

<!-- ACL过滤器 -->
<filter>
   <filter-name>aclFilter</filter-name>
   <filter-class>FilterJava文件</filter-class>
</filter>
<filter-mapping>
   <filter-name>aclFilter</filter-name>
   <url-pattern>*.do</url-pattern>
</filter-mapping>
<!-- filter end -->

转载自http://hi.baidu.com/wjx_5893/blog/item/4abd8f4bcc676efe83025ce4.html