Error configuring application listener of class net.jforum.ForumSessionListener

[Migrated From Jforum.net]

Hi, again me, i�ve moved my jforum to a new server and i found this issue on start tomcat :

Sep 1, 2007 1:30:23 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 1:30:23 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 1:30:38 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 1:30:38 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 1:45:18 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 1:45:19 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 3:27:42 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 3:27:42 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 4:08:25 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
	at org.apache.catalina.core.StandardService.start(StandardService.java:450)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Sep 1, 2007 4:08:25 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 4:36:16 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 4:36:16 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Sep 1, 2007 4:36:18 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class net.jforum.ForumSessionListener
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
	at net.jforum.ForumSessionListener.<clinit>(ForumSessionListener.java:60)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3676)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1175)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:368)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:275)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:80)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Sep 1, 2007 4:36:18 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)

[originally posted on jforum.net by ins]

[Migrated From Jforum.net]

The error "org/apache/log4j/Logger" states that you don't have log4j.jar in your WEB-INF/lib directory.

Rafael
[originally posted on jforum.net by Rafael Steil]