Hello all:
I am trying to run tomcat from maven and including openEJB. The
command I am using to run tomcat:

mvn tomcat:run

The error I am getting :

Jul 18, 2010 6:53:29 AM org.apache.catalina.startup.Embedded start
INFO: Starting tomcat server
Jul 18, 2010 6:53:29 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.26
Jul 18, 2010 6:53:30 AM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter wicket.site
java.lang.ClassCastException:
org.apache.wicket.protocol.http.WicketFilter cannot be cast to
javax.servlet.Filter
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
        at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at org.apache.catalina.startup.Embedded.start(Embedded.java:825)
        at 
org.codehaus.mojo.tomcat.AbstractRunMojo.startContainer(AbstractRunMojo.java:533)
        at 
org.codehaus.mojo.tomcat.AbstractRunMojo.execute(AbstractRunMojo.java:239)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at 
org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Jul 18, 2010 6:53:30 AM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart

So I created a webapp project from maven archetype, and added openEjb
dependency:

                <dependency>
                        <groupId>org.apache.openejb</groupId>
                        <artifactId>openejb-core</artifactId>
                        <version>3.1.2</version>
                </dependency>

The error I am getting now is:

Jul 18, 2010 7:02:37 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.LinkageError: loader constraint violation: loader (instance
of org/apache/jasper/servlet/JasperLoader) previously initiated
loading for a different type with name
"javax/servlet/http/HttpServletRequest"
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2444)
        at java.lang.Class.getDeclaredMethods(Class.java:1808)
        at 
org.apache.catalina.util.DefaultAnnotationProcessor.processAnnotations(DefaultAnnotationProcessor.java:226)
        at 
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:148)
        at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
        at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:636)

Any advice ?
Thank you.

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