Error: The listener returned the following Message: 500 Internal Server Error

Question

Hi,
I'm currently having trouble building a JSP Portlet and registering it in Portal 902. I've followed all of the documentation and created the appropriate web.xml, provider.xml and _default.properties files as required.  When I deploy the page to my local OC4J server using http://localhost:port/myapplication/providers I receive the following message:
Congratulations! You have successfully reached your Provider's Test Page.
Checking for components:
Portlets are: MyPortlet
When I then try and deploy the portlet in our development portal environment using the Enterprise Manager interface, and then test using the same URL as above, I receive the same message as above.
However, when I then try and register the provider through the Portal environment and try and "show" the portlet through a page within the portal, I receive the following error message:
Error: The listener returned the following Message: 500 Internal Server Error
I'm not sure why it would work with my local OC4J instance, and on the Portal server itself, but not as a portlet within a portal page in the main environment. I will add the application log, the provider.xml and the _default.properties files to extra postings after this first message.
Any help would be much, much appreciated.
Best Regards

Answer 1

Here is the application log file after running the portlet:
12/11/02 3:53 PM Started
12/11/02 3:53 PM Started
12/11/02 3:53 PM Started
12/11/02 3:55 PM FavouritesPortlet: oracle.jsp.runtimev2.JspServlet: init
12/11/02 3:55 PM FavouritesPortlet: 9.0.2.0.0 Started
12/11/02 3:55 PM FavouritesPortlet: oracle.webdb.provider.v2.adapter.SOAPServlet: init
12/11/02 3:55 PM FavouritesPortlet: NumberFormatException while initializing Logger. Defaulting LogLevel to 4
12/11/02 3:55 PM FavouritesPortlet: ServletLogger - Logging level: 4
12/11/02 3:55 PM FavouritesPortlet: [id=(null), instance=6872125_3_PREVIEW] CONFIGURATION: Invalid or null value for property - executionWarningTimeout = null - setting to default value of 20 seconds
12/11/02 3:55 PM FavouritesPortlet: [id=(null), instance=6872125_3_PREVIEW] CONFIGURATION: Invalid or null value for property - executionKillTimeout = null - setting to default value of 80 seconds
12/11/02 3:55 PM FavouritesPortlet: [id=(null), instance=6872125_3_PREVIEW] CONFIGURATION: Default container renderer not specified
12/11/02 3:55 PM FavouritesPortlet: [id=(null), instance=6872125_3_PREVIEW] CONFIGURATION: defaulting container renderer to DefaultContainerRenderer
12/11/02 3:55 PM FavouritesPortlet: Servlet error
java.lang.NullPointerException
     at jsp.FavouritesPortlet._jspService(_FavouritesPortlet.java:86)
     at com.orionserver[Oracle9iAS (9.0.2.0.0) Containers for J2EE].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
     at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:508)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:255)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:407)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:330)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:59)
     at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:523)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:269)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:219)
     at oracle.portal.provider.v2.render.http.ResourceRenderer.renderBody(Unknown Source)
     at oracle.portal.provider.v2.render.RenderManager.render(Unknown Source)
     at oracle.portal.provider.v2.DefaultPortletInstance.render(Unknown Source)
     at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.showPortlet(Unknown Source)
     at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.handleHttp(Unknown Source)
     at java.lang.reflect.Method.invoke(Native Method)
     at oracle.webdb.provider.v2.adapter.SOAPServlet.doHTTPCall(Unknown Source)
     at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:59)
     at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:523)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:269)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:735)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].server.http.AJPRequestHandler.run(AJPRequestHandler.java:151)
     at com.evermind[Oracle9iAS (9.0.2.0.0) Containers for J2EE].util.ThreadPoolThread.run(ThreadPoolThread.java:64)