Error Configuring application Listener of Class ... Noclassdeffounderror. The start of a listener tomcat error

When you start Tomcat, if you report an error similar to the following:

WARNING: [Setcontextpropertiesrule]{context} Setting Property ' source ' to ' org.eclipse.jst.j2ee.server:CongressApp ' Did not find a matching property. May, 1:35:26 PM org.apache.catalina.core.StandardContext listenerstart severe:error Configuring Application List Ener ofclass [Email protected] Java.lang.ClassNotFoundException:com.iss.congress.core.util.CongressContextListener at Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1714) at Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1559) at Org.apache.catalina.core.DefaultInstanceManager.loadClass (defaultinstancemanager.java:527) at Org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged (defaultinstancemanager.java:509) at Org.apache.catalina.core.DefaultInstanceManager.newInstance (defaultinstancemanager.java:137) at Org.apache.catalina.core.StandardContext.listenerStart (standardcontext.java:4854) at Org.apache.catalina.core.StandardContext.startInternal (standardcontext.java:5434) at Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150) at Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:901) at Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:877) at Org.apache.cataLina.core.StandardHost.addChild (standardhost.java:633) at Org.apache.catalina.startup.HostConfig.deployDescriptor (hostconfig.java:656) at Org.apache.catalina.startup.hostconfig$deploydescriptor.run (hostconfig.java:1635) at Java.util.concurrent.executors$runnableadapter.call (executors.java:471) at java.util.concurrent.futuretask$ Sync.innerrun (futuretask.java:334) at Java.util.concurrent.FutureTask.run (futuretask.java:166) at Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:615) at Java.lang.Thread.run ( thread.java:722) May1:35:26 PM org.apache.catalina.core.StandardContext listenerstart severe:error Configuring application Listener ofclass [Email protected] Java.lang.ClassNotFoundException:com.iss.congress.core.util.CongressHttpSessionListener At Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1714) at Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1559) at Org.apache.catalina.core.DefaultInstanceManager.loadClass (defaultinstancemanager.java:527) at Org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged (defaultinstancemanager.java:509) at Org.apache.catalina.core.DefaultInstanceManager.newInstance (defaultinstancemanager.java:137) at Org.apache.catalina.core.StandardContext.listenerStart (standardcontext.java:4854) at Org.apache.catalina.core.StandardContext.startInternal (standardcontext.java:5434) at Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150) at Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:901) at Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:877) at Org.apache.Catalina.core.StandardHost.addChild (standardhost.java:633) at Org.apache.catalina.startup.HostConfig.deployDescriptor (hostconfig.java:656) at Org.apache.catalina.startup.hostconfig$deploydescriptor.run (hostconfig.java:1635) at Java.util.concurrent.executors$runnableadapter.call (executors.java:471) at java.util.concurrent.futuretask$ Sync.innerrun (futuretask.java:334) at Java.util.concurrent.FutureTask.run (futuretask.java:166) at Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:615) at Java.lang.Thread.run ( thread.java:722) May1:35:26 PM org.apache.catalina.core.StandardContext listenerstart severe:error Configuring application Listener ofclass [Email protected] Java.lang.ClassNotFoundException:com.iss.congress.core.util.HibernateListener at Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1714) at Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1559) at Org.apache.catalina.core.DefaultInstanceManager.loadClass (defaultinstancemanager.java:527) at Org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged (defaultinstancemanager.java:509) at Org.apache.catalina.core.DefaultInstanceManager.newInstance (defaultinstancemanager.java:137) at Org.apache.catalina.core.StandardContext.listenerStart (standardcontext.java:4854) at Org.apache.catalina.core.StandardContext.startInternal (standardcontext.java:5434) at Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150) at Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:901) at Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:877) at ORG.APACHE.CATALINA.COre. Standardhost.addchild (standardhost.java:633) at Org.apache.catalina.startup.HostConfig.deployDescriptor ( hostconfig.java:656) at Org.apache.catalina.startup.hostconfig$deploydescriptor.run (HostConfig.java:1635) at Java.util.concurrent.executors$runnableadapter.call (executors.java:471) at java.util.concurrent.futuretask$ Sync.innerrun (futuretask.java:334) at Java.util.concurrent.FutureTask.run (futuretask.java:166) at Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:615) at Java.lang.Thread.run ( thread.java:722)

Congratulations, I may help you here, sum up:

1. Please remove the serve modules without publishing in Tomcat configuration

2, if it is the source code, then your project does not have this listener. java

3, if the jar package is referenced, it may not be the jar Package listener. Class, if you are invited to check your. Classpath There is no this jar package, do not join

Error Configuring application Listener of Class ... Noclassdeffounderror. The start of a listener tomcat error