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https://issues.apache.org/jira/browse/MYFACES-3587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13782034#comment-13782034
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Martin Kočí commented on MYFACES-3587:
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I have this issue too, but the configuration of myfaces has Facelts-VDL only
(org.apache.myfaces.SUPPORT_JSP_AND_FACES_EL=false)
In the method : ViewHandlerImpl.createView(FacesContext, String)
getViewHandlerSupport(context).calculateViewId(context, viewId) returns null.
Then
getViewDeclarationLanguage(context,calculatedViewId).createView(context,calculatedViewId)
throws unreadable NPE instead of java.lang.NoClassDefFoundError:
javax/servlet/jsp/jstl/core/Config:
java.lang.NullPointerException
at
org.apache.myfaces.application.ViewHandlerImpl.createView(ViewHandlerImpl.java:259)
at
javax.faces.application.ViewHandlerWrapper.createView(ViewHandlerWrapper.java:101)
...
at
org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:235)
at
org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:196)
at
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:143)
at
org.apache.myfaces.extensions.cdi.jsf2.impl.listener.phase.CodiLifecycleWrapper.execute(CodiLifecycleWrapper.java:95)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
> Not existing viewId will not be handled
> ---------------------------------------
>
> Key: MYFACES-3587
> URL: https://issues.apache.org/jira/browse/MYFACES-3587
> Project: MyFaces Core
> Issue Type: Bug
> Components: General
> Affects Versions: 2.1.8
> Environment: Jetty/Tomcat, JUEL, CODI, ExtVal
> Reporter: Thomas Andraschko
> Assignee: Leonardo Uribe
>
> If i call a page, which does not exist, following exceptions occurs: Cannot
> reset buffer after response has been committed.
> After digging deeper into this problem, i found out that
> getViewHandlerSupport()#calculateViewId returns null and the
> JspViewDeclarationLanguageStrategy will be used ->
> Cannot reset buffer after response has been committed.
> occurs.
> I added a null check for the logicalViewId in RestoreViewExecutor#execute to
> call HttpServletResponse#sendError.
> It does not work as expected because it just renders the errorPage and no
> redirect will be done.
> Why there is not such null check?
> Is it possible to add this check and redirect to the web.xml defined 404 or
> common error page? Or should it use the ErrorHandler?
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