Hi Andreas
Portlets can't be called directly like servlets by entering a url into
your browser. The Portal has to invoke them and since the portlets are
potentially in their own webapp, a portlet invocation takes an
indirection via a servlet.
I guess you're missing a servlet entry in your web.xml - but I don't
know anything about pluto-1.0 so I don't know for sure.
Patrick
2006/2/3, Andreas Schildbach <[EMAIL PROTECTED]>:
> [Sorry for posting again, but my post in the user list remained
> unanswered for some days.]
>
> Hi everyone,
>
> I'm currently trying to deploy my own portlet into Pluto 1.0.1 by hand.
> The window of the portlet already shows up in the Pluto portal, but the
> content only shows "Error occurred in portlet!", and there is a
> NullPointerException in the log:
>
> java.lang.NullPointerException at
> org.apache.pluto.invoker.impl.PortletInvokerImpl.invoke(PortletInvokerImpl.java:109)
>
> I looked up the corresponding line in the source:
>
> protected void invoke(PortletRequest portletRequest, PortletResponse
> portletResponse, Integer methodID)
> throws PortletException,IOException
> {
> InternalPortletRequest internalPortletRequest =
> CoreUtils.getInternalRequest(portletRequest);
> InternalPortletResponse internalPortletResponse =
> CoreUtils.getInternalResponse(portletResponse);
> // gather all required data from request and response
> ServletRequest servletRequest =
> ((javax.servlet.http.HttpServletRequestWrapper)internalPortletRequest).getRequest();
> ServletResponse servletResponse =
> ((javax.servlet.http.HttpServletResponseWrapper)internalPortletResponse).getResponse();
> ServletDefinition servletDefinition =
> portletDefinition.getServletDefinition();
> ServletContext servletContext = servletConfig.getServletContext();
> javax.servlet.RequestDispatcher dispatcher =
> servletDefinition.getRequestDispatcher(servletContext); <<< ITS THIS LINE
> [...]
>
> Looks like servletConfig.getServletContext() returned null. The reason
> could be that I defined no "invoker servlet" for my portlet. Before I
> elaborate any more, could anyone tell me what's the deal with that
> "invoker servlet"? I could not find anything about it in the portlet
> specification or in the pluto documentation. Why is it needed, or is
> just optional and there is an error in the impl?
>
> Regards,
>
> Andreas
>
>
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