DefaultAnnotationHandlerMapping via ContextLoaderListener instead of DispatcherServlet on Spring 3
java, spring
Solution
You need both the `ContextLoaderListener` and the `DispatcherServlet` - the error message didn't tell you to remove the servlet.
To clarify what Spring is doing here, the `DispatcherServlet` creates its own `ApplicationContext` (typically using `xxx-servlet.xml`), but any Spring Filters that you configure in web.xml don't have access to the servlet's `ApplicationContext`.
The `ContextLoaderListener` creates a second `ApplicationContext` (associated with the whole webapp), and links itself with the servlet's `ApplicationContext`, allowing filters and servlets to communicate via Spring.
Problem
When I use DispatcherServlet, I get a java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener registered? error when I use a DelegatingFilterProxy filter. Therefore I've removed the DispatcherServlet and now I use a ContextLoaderListener instead, and my Spring application loads fine. However, I have a problem with one VERY important bean: ``` <context:component-scan base-package="com.mydomain"/> <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"> <property name="interceptors"> <list> <ref bean="openSessionInViewInterceptor" /> </list> </property> </bean> ``` This bean no longer works, none of my @Controller's are URL mapped anymore. If I switch back to using DispatcherServlet, no problem (except that my filter is useless again). How can I get this bean to load correctly from within a ContextLoaderListener? Cheers Nik