title: Tomcat 6 not loading jars from WEB-INF/lib
body: <p>I'm trying to track down a configuration issue in my tomcat environment. Our production servers are running a tomcat installation and reading the war from a shared NFS mount.</p>
  
  <p>However, when I try the same war with a stand-alone box (with their configuration), I get the error posted below.</p>
  
  <p>Whats interesting, is that if I unzip all the jars in WEB-INF/lib into WEB-INF/classes, this error goes away.</p>
  
  <p>So, it seems like something is preventing the app from loading the WEB-INF/lib path, but I can't for the life of me find any tomcat settings that would cause this, because it is detecting the apps and configuration, just not the included jars.</p>
  
  <p>Any ideas?</p>
  
  <blockquote>
    <p>SEVERE: Error configuring application listener of class
    org.springframework.web.context.ContextLoaderListener
    java.lang.ClassNotFoundException:
    org.springframework.web.context.ContextLoaderListener
            at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
            at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
            at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3786)
            at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
            at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
            at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
            at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
            at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:627)
            at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553)
            at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488)
            at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
            at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
            at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
            at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
            at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
            at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
            at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
            at org.apache.catalina.core.StandardService.start(StandardService.java:516)
            at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
            at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
            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:288)
            at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Dec 20,
    2011 4:20:38 PM org.apache.catalina.core.StandardContext listenerStart
    SEVERE: Error configuring application listener of class
    org.springframework.security.web.session.HttpSessionEventPublisher
    java.lang.ClassNotFoundException:
    org.springframework.security.web.session.HttpSessionEventPublisher
            at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
            at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
            at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3786)
            at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
            at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
            at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
            at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
            at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:627)
            at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553)
            at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488)
            at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
            at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
            at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
            at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
            at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
            at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
            at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
            at org.apache.catalina.core.StandardService.start(StandardService.java:516)
            at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
            at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
            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:288)
            at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)</p>
  </blockquote>