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Forum: Seam Users Forum ListTopic List
20. Sep 2008, 02:28 CET | Link

I'm trying to run the Tomcat with JBoss Embedded jpa booking example. I run the build and deploy the war. I then get the following error: 

ERROR [catalina.core.ContainerBase.[Catalina].[localhost].[/jboss-seam-jpa]] Error configuring application listener of class com.sun.faces.config.ConfigureListener
java.lang.NoClassDefFoundError: javax/el/CompositeELResolver
        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
        at java.lang.Class.getConstructor0(Class.java:2671)
        at java.lang.Class.newInstance0(Class.java:321)
        at java.lang.Class.newInstance(Class.java:303)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3618)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4104

I find this class exists in el-api.jar which is not in the classpath. So I add el-api.jar to the WEB-INF/lib directory. I then get the following error: 

INFO: JSF1048: PostConstruct/PreDestroy annotations present.  ManagedBeans methods marked with these annotations will have said annotations processed.
Sep 19, 2008 5:37:50 PM com.sun.faces.config.ConfigureListener installExpressionFactory
SEVERE: Error Instantiating ExpressionFactory
java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImpl
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1332)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:164)
        at com.sun.faces.config.ConfigureListener.installExpressionFactory(ConfigureListener.java:1521)

This library appears to be in el-ri.jar or JSP 2.1 jar. Am I doing something wrong? Is there a place that explains how to run seam applications on tomcat 5.5.x? Any help is greatly appreciated!

4 Replies:
22. Sep 2008, 16:24 CET | Link

You seem to be missing the Sun EL libs. Check whether you have the el-api.jar and el-ri.jar in your classpath. I myself am running Seam on Tomcat 5.5.26 without any problems or extra setup steps.
22. Sep 2008, 18:12 CET | Link

Thanks for the response Alex. Are you using JBoss Embedded with Tomcat 5.5.26? I am able to get this to work with Tomcat 5.5 without JBoss Embedded. Using the Seam JPA example I run ant tomcat55 and everything works fine, but when I run ant jboss-embedded I get the above errors. So, I'm wondering if I'm porting a seam EJB application from JBoss to Tomcat will I need to pull out all my EJB components and convert them into POJOs?

23. Sep 2008, 19:14 CET | Link
I got this to work. I ran 'ant tomcat55' in seam/examples/jpa and this generated a distribution for tomcat55. I copied the WEB-INF/lib directory to save and ran 'ant clean'. I then ran 'ant jboss-embedded' and manually copied in the el-* jar files. This appeared to work. Is this a bug with the jboss-embedded make? Is there an option to run this ant make with required libs for tomcat55?
23. Sep 2008, 19:36 CET | Link

No, I'm using POJO components, thus no (need of) JBoss Embedded. To me, the gains of using full EJBs don't outweight the troubles of setting up the EJB container.