Unable to load class [com.sun.jmx.mbeanserver.RepositorySupport] to check against the @HandlesTypes

Question

after migrating to tomcat 7.0.22 and installing t7mp (tomcat 7 plugin from google code) i am running on maven 2 btw when trying to run mvn t7:run, i got the following exception:

WARNING: Unable to load class [com.sun.jmx.mbeanserver.MBeanInstantiatorImpl] to check against the @HandlesTypes annotation of one or more ServletContentInitializers.
java.lang.IncompatibleClassChangeError: Implementing class
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2820)
        at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1150)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)
        at org.apache.catalina.startup.ContextConfig.checkHandlesTypes(ContextConfig.java:2006)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:1969)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1858)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1826)
        at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1812)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1306)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:896)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:322)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5103)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:812)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:787)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:607)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1055)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:978)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1329)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:389)
        at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:334)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1041)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:621)
        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 com.googlecode.t7mp.RunMojo.execute(RunMojo.java:52)
        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:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        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)
Oct 18, 2011 11:50:00 AM org.apache.catalina.startup.ContextConfig checkHandlesTypes

here's my configuration for t7mp:

<plugin>
                <groupId>com.googlecode.t7mp</groupId>
                <artifactId>maven-t7-plugin</artifactId>
                <version>0.9.6</version>
                <configuration>
                     <tomcatHttpPort>8081</tomcatHttpPort>
                     <tomcatShutdownPort>8008</tomcatShutdownPort>
                     <tomcatVersion>7.0.22</tomcatVersion>                                     
                </configuration>
</plugin>

so any ideas why i am getting this error, and how to solve it ?

UPDATE:

i got the same error when trying to run my external tomcat7 from eclipse.

Answer 1

well above exception was gone by excluding jmxtools,*jmxri* from the log4j library

<dependency> 
  <groupId>log4j</groupId> 
  <artifactId>log4j</artifactId> 
  <version>1.2.15</version> 
  <exclusions> 
    <exclusion> 
     <groupId>com.sun.jdmk</groupId> 
     <artifactId>jmxtools</artifactId> 
    </exclusion> 
     <exclusion> 
      <groupId>com.sun.jmx</groupId> 
       <artifactId>jmxri</artifactId> 
     </exclusion> 
  </exclusions> 
</dependency>