WebFilter urlPatterns被忽略了

Question

我已经阅读了很多例子,虽然我似乎有一个'确切'的副本,所以我无法弄清楚为什么我的过滤器将导航到/login而不是/restricted/*.我已经尝试了两个注释(如下例所示)和XML来定义WebFilter.

Webfilter

@WebFilter(filterName = "AuthenticationFilter", servletNames = { "Faces Servlet" }, urlPatterns = { "/restricted/*" } )
public class AuthenticationFilter implements Filter {
    @Inject
    private SessionManager sessionManager;

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain) throws IOException, ServletException {
        System.out.println("Active AuthenticationFilter");
        if (sessionManager.getUser() == null) {
            ((HttpServletResponse) response).sendRedirect("/login");
        }
        else {
            chain.doFilter(request, response);
        }
    }

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

    @Override
    public void destroy() {
    }
}

web.xml中

<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>   
<filter>
    <filter-name>Pretty Filter</filter-name>
    <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>
    <async-supported>true</async-supported>
</filter>
<filter-mapping> 
    <filter-name>Pretty Filter</filter-name> 
    <url-pattern>/*</url-pattern> 
    <dispatcher>FORWARD</dispatcher> 
    <dispatcher>REQUEST</dispatcher> 
    <dispatcher>ERROR</dispatcher>
    <dispatcher>ASYNC</dispatcher>
</filter-mapping>
<filter>
    <filter-name>NoCacheFilter</filter-name>
    <filter-class>filter.NoCacheFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>NoCacheFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
    <filter-name>AuthenticationFilter</filter-name>
    <filter-class>filter.AuthenticationFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>AuthenticationFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/restricted/*</url-pattern>
</filter-mapping>

注意

即使过滤器是在两个文件中定义的,我也可以保证我不会同时使用这两种符号.为了测试和审查,我确实发布了它们.

我是webfilters的新手,并且对使用多个过滤器一无所知.但是我读过的内容,您可以使用多个,它们将按您定义的顺序执行web.xml.

题

有没有人知道为什么我的过滤器也会在页面上执行/login？该应用程序在Glassfish 3.1.2上运行.

Answer 1

该<filter-mapping>匹配条件不包容,他们是排斥的.

使用以下映射

<filter-mapping>
    <filter-name>AuthenticationFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/restricted/*</url-pattern>
</filter-mapping>

你基本上是指示每当FacesServlet要调用或每当URL模式匹配时都应该调用过滤器/restricted/*.

这不是你所期待的"和"条件.只需删除该<servlet-name>条目.

然后适当的@WebFilter声明

@WebFilter("/restricted/*")

假设您不需要<filter-mapping>(例如,如果订单无关紧要).