Description Sven Panko 2011-02-02 09:54:17 EST

Build Identifier: Virgo 2.1.0.RELEASE + Snaps built from Git as of 2010-09-09

Using Snaps (self-built 2010-09-09) on Virgo 2.1.0.RELEASE and everything works happily except for resolving a JSP view from a snaps-bundle (the situation it is not working in is when an ExceptionResolver tries to return a page to the client). In my case I have created a JSP file in the WEB-INF/views-directory of my snap bundle. Then I created the following Spring config in this bundle:

	<mvc:annotation-driven />
	<!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/views/"/>
		<property name="suffix" value=".jsp"/>
	</bean>

The web.xml of this bundle looks like this:

	<servlet>
		<servlet-name>callback-controller</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>
				/WEB-INF/context/controller-servlet.xml
			</param-value>
		</init-param>
		<init-param>
			<param-name>contextClass</param-name>
			<param-value>org.eclipse.virgo.web.dm.ServerOsgiBundleXmlWebApplicationContext</param-value>
		</init-param>
		<init-param>
			<param-name>detectAllHandlerExceptionResolvers</param-name>
			<param-value>false</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>callback-controller</servlet-name>
		<url-pattern>/*</url-pattern>
	</servlet-mapping>
	
	<servlet-mapping>
		<servlet-name>jsp</servlet-name>
		<url-pattern>/WEB-INF/views/*</url-pattern>
	</servlet-mapping>


My host bundle's web.xml looks like this:

	<filter>
		<filter-name>host-filter</filter-name>
		<filter-class>org.eclipse.virgo.snaps.core.SnapHostFilter</filter-class>
	</filter>

	<context-param>
		<param-name>contextClass</param-name>
		<param-value>org.eclipse.virgo.web.dm.ServerOsgiBundleXmlWebApplicationContext</param-value>
	</context-param>
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/context/global-context.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<filter-mapping>
		<filter-name>host-filter</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>INCLUDE</dispatcher>
	</filter-mapping>


I can happily interact with all my controllers in the snaps bundle, but when one of them returns a ModelAndView which should be resolved to a JSP inside the snaps bundle, I get the following exception:

java.lang.NullPointerException
	org.eclipse.virgo.snaps.core.internal.webapp.container.ServletManager.findMatch(ServletManager.java:95)
	org.eclipse.virgo.snaps.core.internal.webapp.container.StandardVirtualContainerRequestDispatcher.service(StandardVirtualContainerRequestDispatcher.java:89)
	org.eclipse.virgo.snaps.core.internal.webapp.WebAppSnap.handleRequest(WebAppSnap.java:153)
	org.eclipse.virgo.snaps.core.RequestRouter.service(RequestRouter.java:51)
	org.eclipse.virgo.snaps.core.SnapHostFilter.doFilter(SnapHostFilter.java:62)
	org.eclipse.virgo.snaps.core.RequestRouter.forward(RequestRouter.java:60)
	org.eclipse.virgo.snaps.core.internal.webapp.container.SnapHttpServletRequest$1.forward(SnapHttpServletRequest.java:92)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:239)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.eclipse.virgo.snaps.core.internal.webapp.container.ImmutableFilterChain.doFilter(ImmutableFilterChain.java:47)
	org.eclipse.virgo.snaps.core.internal.webapp.container.StandardVirtualContainerRequestDispatcher$1.doWithClassLoader(StandardVirtualContainerRequestDispatcher.java:104)
	org.eclipse.virgo.snaps.core.internal.webapp.container.StandardVirtualContainerRequestDispatcher$1.doWithClassLoader(StandardVirtualContainerRequestDispatcher.java:1)
	org.eclipse.virgo.snaps.core.internal.webapp.container.StandardVirtualContainerRequestDispatcher.doWithThreadContextClassLoader(StandardVirtualContainerRequestDispatcher.java:121)
	org.eclipse.virgo.snaps.core.internal.webapp.container.StandardVirtualContainerRequestDispatcher.service(StandardVirtualContainerRequestDispatcher.java:101)
	org.eclipse.virgo.snaps.core.internal.webapp.WebAppSnap.handleRequest(WebAppSnap.java:153)
	org.eclipse.virgo.snaps.core.RequestRouter.service(RequestRouter.java:51)
	org.eclipse.virgo.snaps.core.SnapHostFilter.doFilter(SnapHostFilter.java:62)


Reproducible: Always

Steps to Reproduce:
1. Create a Snaps Host bundle and a Snap Bundle
2. Configure the Host bundle's filter to listen to FORWARDs as well
3. Configure a JSP servlet-mapping in the Snap Bundle's web.xml
4. Try to reference a JSP view from a snaps bundle