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From "Pirzada Rashid (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TILES-561) java.lang.NullPointerException at org.apache.tiles.el.JspExpressionFactoryFactory.getExpressionFactory
Date Thu, 01 Nov 2012 05:35:12 GMT

     [ https://issues.apache.org/jira/browse/TILES-561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pirzada Rashid updated TILES-561:
---------------------------------

    Description: 
Demo project is attached but problem is throughly discussed at http://stackoverflow.com/questions/13126201/struts2-tiles-org-apache-tiles-extras-complete-completeautoloadtileslistener-int
. Seems there is no solution to it because I have spent hrs struggling. 

In Short:

*web.xml*
<listener>
        <listener-class>org.apache.tiles.extras.complete.CompleteAutoloadTilesListener</listener-class>
    </listener>

*generating error*

SEVERE: Exception sending context initialized event to listener instance of class org.apache.tiles.extras.complete.CompleteAutoloadTilesListener
java.lang.NullPointerException
	at org.apache.tiles.el.JspExpressionFactoryFactory.getExpressionFactory(JspExpressionFactoryFactory.java:61)
	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createELEvaluator(CompleteAutoloadTilesContainerFactory.java:242)
	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createAttributeEvaluatorFactory(CompleteAutoloadTilesContainerFactory.java:182)
	at org.apache.tiles.factory.BasicTilesContainerFactory.createContainer(BasicTilesContainerFactory.java:88)


*Conclusion*
After alot of testing and checking, the problem is with embedded tomcat7 instance which is
not working with the above web.xml configuration and genertating error. Below is the *pom*
plugin that if run tomcat7:run will generate the error

 <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.0</version>
                <configuration>
                    <port>8000</port>
                </configuration>
            </plugin>

  was:
Demo project is attached but problem is throughly discussed at http://stackoverflow.com/questions/13126201/struts2-tiles-org-apache-tiles-extras-complete-completeautoloadtileslistener-int
. Seems there is no solution to it because I have spent hrs struggling. Guy on stackoverflow
with reputation 4k already worked on tiles 2.2.2 & struts2 2.3.1.2 successfully says that
with struts2 2.3.4.1 web.xml defining extras listener breaking the project and I have tested
it as well.  

In Short:

*web.xml*
<listener>
        <listener-class>org.apache.tiles.extras.complete.CompleteAutoloadTilesListener</listener-class>
    </listener>

*generating error*

SEVERE: Exception sending context initialized event to listener instance of class org.apache.tiles.extras.complete.CompleteAutoloadTilesListener
java.lang.NullPointerException
	at org.apache.tiles.el.JspExpressionFactoryFactory.getExpressionFactory(JspExpressionFactoryFactory.java:61)
	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createELEvaluator(CompleteAutoloadTilesContainerFactory.java:242)
	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createAttributeEvaluatorFactory(CompleteAutoloadTilesContainerFactory.java:182)
	at org.apache.tiles.factory.BasicTilesContainerFactory.createContainer(BasicTilesContainerFactory.java:88)

    
> java.lang.NullPointerException at org.apache.tiles.el.JspExpressionFactoryFactory.getExpressionFactory
> ------------------------------------------------------------------------------------------------------
>
>                 Key: TILES-561
>                 URL: https://issues.apache.org/jira/browse/TILES-561
>             Project: Tiles
>          Issue Type: Bug
>          Components: tiles-extras
>    Affects Versions: 3.0.1
>         Environment: win 7, IntelliJ latest, embeded tomcat7, struts2 2.3.4.1, tiles
3.0.1, maven
>            Reporter: Pirzada Rashid
>            Priority: Blocker
>              Labels: patch
>         Attachments: Struts2_Tiles_JSP.rar
>
>
> Demo project is attached but problem is throughly discussed at http://stackoverflow.com/questions/13126201/struts2-tiles-org-apache-tiles-extras-complete-completeautoloadtileslistener-int
. Seems there is no solution to it because I have spent hrs struggling. 
> In Short:
> *web.xml*
> <listener>
>         <listener-class>org.apache.tiles.extras.complete.CompleteAutoloadTilesListener</listener-class>
>     </listener>
> *generating error*
> SEVERE: Exception sending context initialized event to listener instance of class org.apache.tiles.extras.complete.CompleteAutoloadTilesListener
> java.lang.NullPointerException
> 	at org.apache.tiles.el.JspExpressionFactoryFactory.getExpressionFactory(JspExpressionFactoryFactory.java:61)
> 	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createELEvaluator(CompleteAutoloadTilesContainerFactory.java:242)
> 	at org.apache.tiles.extras.complete.CompleteAutoloadTilesContainerFactory.createAttributeEvaluatorFactory(CompleteAutoloadTilesContainerFactory.java:182)
> 	at org.apache.tiles.factory.BasicTilesContainerFactory.createContainer(BasicTilesContainerFactory.java:88)
> *Conclusion*
> After alot of testing and checking, the problem is with embedded tomcat7 instance which
is not working with the above web.xml configuration and genertating error. Below is the *pom*
plugin that if run tomcat7:run will generate the error
>  <plugin>
>                 <groupId>org.apache.tomcat.maven</groupId>
>                 <artifactId>tomcat7-maven-plugin</artifactId>
>                 <version>2.0</version>
>                 <configuration>
>                     <port>8000</port>
>                 </configuration>
>             </plugin>

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