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https://issues.apache.org/jira/browse/MYFACES-4284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16793860#comment-16793860
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Thomas Andraschko commented on MYFACES-4284:
--------------------------------------------

I really wonder if the servlet container shouldn't throw a exception before 
initializing myfaces?
But it doesnt hurt of course, please also do it for 3.x.

> ClassNotFoundException during initialization
> --------------------------------------------
>
>                 Key: MYFACES-4284
>                 URL: https://issues.apache.org/jira/browse/MYFACES-4284
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 2.3.3
>            Reporter: Bill Lucy
>            Assignee: Bill Lucy
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> A ClassNotFoundException can occur during initialization when a servlet 
> mapping is defined which cannot be loaded by MyFaces.  We should update 
> WebXml.getFacesServletMappings() to not throw an exception when it can't load 
> a class.
> javax.faces.FacesException: java.lang.ClassNotFoundException: <classname>
>      at 
> org.apache.myfaces.shared.util.ClassUtils.simpleClassForName(ClassUtils.java:239)
>      at 
> org.apache.myfaces.shared.util.ClassUtils.simpleClassForName(ClassUtils.java:215)
>      at 
> org.apache.myfaces.shared_impl.webapp.webxml.WebXml.getFacesServletMappings(WebXml.java:136)
>      at 
> org.apache.myfaces.spi.impl.DefaultWebConfigProvider.getFacesServletMappings(DefaultWebConfigProvider.java:46)
>      at 
> org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:161)
> This is related to the fix made in MYFACES-3629 
> Any servlet defined in the web.xml that can't be loaded by at the time of JSF 
> initialization will cause this problem.  As an example, this definition will 
> cause MyFaces initialization to fail:
>     _<servlet>_ 
>         _<servlet-name>unloadable</servlet-name>_ 
>         _<servlet-class>does.not.Exist</servlet-class>_ 
>         _<load-on-startup>1</load-on-startup>_ 
>     _</servlet>_



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