Log4J error

i m unable to run a webapp this error is comming

Code:

---

pr 7, 2011 4:55:37 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.util.Log4jConfigListener
java.lang.NoClassDefFoundError: org/apache/log4j/PropertyConfigurator
        at org.springframework.util.Log4jConfigurer.initLogging(Log4jConfigurer.java:70)
        at org.springframework.web.util.Log4jWebConfigurer.initLogging(Log4jWebConfigurer.java:151)
        at org.springframework.web.util.Log4jConfigListener.contextInitialized(Log4jConfigListener.java:51)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3795)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4252)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at org.apache.catalina.core.StandardService.start(StandardService.java:448)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
        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:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.PropertyConfigurator
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1438)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
        ... 18 more

---

...
...
...

Code:

---

Apr 7, 2011 4:55:37 PM org.apache.catalina.core.ApplicationContext log
INFO: Shutting down Log4J
Apr 7, 2011 4:55:37 PM org.apache.catalina.core.StandardContext listenerStop
SEVERE: Exception sending context destroyed event to listener instance of class org.springframework.web.util.Log4jConfigListener
java.lang.NoClassDefFoundError: org/apache/log4j/LogManager
        at org.springframework.util.Log4jConfigurer.shutdownLogging(Log4jConfigurer.java:114)
        at org.springframework.web.util.Log4jWebConfigurer.shutdownLogging(Log4jWebConfigurer.java:169)
        at org.springframework.web.util.Log4jConfigListener.contextDestroyed(Log4jConfigListener.java:55)
        at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:3836)
        at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4366)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4282)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at org.apache.catalina.core.StandardService.start(StandardService.java:448)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
        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:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.LogManager
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1438)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
        ... 19 more

---

I have log4j in my classpath..
Do i need to incude the jar in lib folder also.. If I do them I get some other error related to loggin which is specific to application.

please help..

Do you have log4j on the classpath form your web app, e.g. web-inf/lib or do you have 2 instances of log4j in your classpath?

nope.. single instance in classpath..
webinf/lib doesnt have any.

Where is it in your classpath?

Try putting a copy in web-inf/lib