昨夜遇到这样一个问题：后台没有登陆的时候，直接访问相关/admin/下的页面，转到了admin/forwards.html，而访问xxx.action，程序正常执行，也就是说我写的过滤器没有起作用，重复测试代码很多次确定程序没问题，过滤器是从之前的项目上拿下来的，肯定也是没问题的！因夜半精神不佳，无奈只好先去休息！躺在床上又捋了一遍流程，觉得问题可能在web.xml中的配置这里！
刚才又重新检查代码证实了昨夜的猜测！下面先看下代码！、
1.
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; import javax.servlet.http.HttpSession; /** * * @time: Mar 30, 2009 3:27:41 PM * @author: 聂靖宇 * @QQ: 6241899 * @MSN: niejingyu@hotmail.com * @Email: niejingyu@gmail.com * @Description: 后台登陆FIlter */ public class WebMasterLoginFilter implements Filter{ public void destroy() { } public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest)req; HttpServletResponse response = (HttpServletResponse)res; HttpSession session = request.getSession(); String uri = request.getRequestURI(); //不过滤登录退出 if((!uri.contains("/login.jsp")) && (!uri.contains("/admin/login.action")) && (!uri.contains("/admin/exit.action") && (!uri.contains("/forwards.html")) && (!uri.contains("/images/")) && (!uri.contains("/css/")))){ if(session.getAttribute("adminInfo") == null){ response.sendRedirect(request.getContextPath()+"/admin/forwards.html"); return; } } try{ chain.doFilter(req, res); }catch(IllegalStateException e){ } } public void init(FilterConfig arg0) throws ServletException { } }
2.web.xml配置
<!-- Struts2 配置 --> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.FilterDispatcher </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> <!-- 后台登录过滤器 开始--> <filter> <filter-name>WebMasterLoginFilter</filter-name> <filter-class>com.buygift.filters.WebMasterLoginFilter</filter-class> </filter> <filter-mapping> <filter-name>WebMasterLoginFilter</filter-name> <url-pattern>/admin/*</url-pattern> </filter-mapping> <!-- 后台登陆过滤器 结束 -->
也就是说当有XXX.action的请求到来的时候，先走了struts2的过滤器，所以而我配置的权限过滤器就没执行，修改二者的代码重复测试，程序按照预期的效果执行！即：访问xxx.action转到admin/forwards.html
3.
<!-- 后台登录过滤器 开始--> <filter> <filter-name>WebMasterLoginFilter</filter-name> <filter-class>com.buygift.filters.WebMasterLoginFilter</filter-class> </filter> <filter-mapping> <filter-name>WebMasterLoginFilter</filter-name> <url-pattern>/admin/*</url-pattern> </filter-mapping> <!-- 后台登陆过滤器 结束 --> <!-- Struts2 配置 --> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.FilterDispatcher </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping>
