Where is signin/Welcome.jsp?
if located under WEB-INF/signin then modify forward statement to
<forward name="success"
path="/WEB-INF/signin/Welcome.jsp"/>
Martin
----- Original Message -----
From: "Caroline Jen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, May 14, 2004 10:54 AM
Subject: NullPointerException - findSuccess(Unknown Source)
> Need your expertise to diagnose the problem.
>
> I have a java class ListThread.java that extends
> Action. This java class simply calls a couple of
> helper classes to access my database. In the end of
> the ListThread.java, it is a standard statement:
>
> return ( mapping.findForward( "success" ) );
>
>
> I have not yet prepared a JSP to be displayed in the
> browser after ListThread.java completes its tasks;
> therefore, upon completion, I temporarily wants the
> application to be forwarded to my welcome page. (My
> welcome page works fine.)
>
> Because the ListThread.java does not really submit a
> form, I simply put name="articleForm" in the
> struts-config.xml file. I have substituted with other
> forms for testing purpose. Nonetheless, I always got
> Status 500 error:
>
> ----- Root Cause -----
> java.lang.NullPointerException
> at
> org.apache.struts.scaffold.ParameterAction.findSuccess(Unknown
> Source)
> at
> org.apache.struts.scaffold.BaseAction.execute(Unknown
> Source)
> at
>
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces
sor.java:484)
> at
>
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
> .............
> .............
>
> My struts-config.xml looks like:
>
> <action
> roles="administrator,editor,contributor"
> path="/message/ListThreads"
> type="org.apache.artimus.message.ListThread"
> name="articleForm"
> scope="request"
> validate="false">
> <forward
> name="success"
> path="/signin/Welcome.jsp"/>
> </action>
>
> And here is my ListThread.java:
>
> import LOTS OF PACKAGES AND CLASSES;
>
> public final class ListThread extends Action
> {
> public ActionForward execute(ActionMapping mapping,
> ActionForm form,
> HttpServletRequest
> request,
> HttpServletResponse
> response)
> throws Exception
> {
>
> String memberName = request.getRemoteUser();
>
> // for sort and order stuff
> String sort = request.getParameter( "sort" );
> String order = request.getParameter( "order" );
>
> if ( sort.length() == 0 ) sort =
> "ThreadLastPostDate";
> if ( order.length()== 0 ) order = "DESC";
>
> int offset = 0;
> int rows =
> MessageInboxConfig.ROWS_IN_THREADS;
> offset = Integer.parseInt( request.getParameter(
> "offset" ) );
> rows = Integer.parseInt( request.getParameter(
> "rows" ) );
>
> ListThreadHandler lthandler = new
> ListThreadHandler();
> ListPostHandler lphandler = new
> ListPostHandler();
>
> int totalThreads =
> lthandler.getNumberOfThreads_forReceiver( memberName
> );
> if ( offset > totalThreads )
> {
> throw new BadInputException( "The offset is
> not allowed to be greater than total rows." );
> }
>
> Collection beans =
> lthandler.getThreads_forReceiver_withSortSupport_limit(
> memberName, offset, rows, sort, order );
>
> SiteUtil.prepareNavigate( request, offset,
> beans.size(), totalThreads,
> MessageInboxConfig.ROWS_IN_THREADS );
> int totalPosts =
> lphandler.getNumberOfPosts_forReceiver( memberName );
>
> request.setAttribute( "ThreadBeans", beans );
> request.setAttribute( "TotalThreads", new
> Integer( totalThreads ) );
> request.setAttribute( "TotalPosts", new Integer(
> totalPosts ) );
>
> return ( mapping.findForward( "success" ) );
>
> }
> }
>
>
>
>
>
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