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https://issues.apache.org/jira/browse/TOMEE-1627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697093#comment-14697093
 ] 

Romain Manni-Bucau commented on TOMEE-1627:
-------------------------------------------

Hi

Can you give us your server config, did you customize any jar in the server, 
did you add any jar to the jvm or classpath?

Best would be to reproduce with tomee maven plugin if you can.


> NoClassDefFoundError: Could not initialize class 
> org.apache.tomee.loader.TomEEJarScanner
> ----------------------------------------------------------------------------------------
>
>                 Key: TOMEE-1627
>                 URL: https://issues.apache.org/jira/browse/TOMEE-1627
>             Project: TomEE
>          Issue Type: Bug
>          Components: TomEE Core Server
>    Affects Versions: 1.7.2
>         Environment: jdk1.8.0_51
>            Reporter: Vyacheslav
>
> Hello!
> Classes TomcatHelper and TomEEJarScanner are in the same jar and evend in the 
> same package, but somehow I receive java.lang.NoClassDefFoundError: Could not 
> initialize class org.apache.tomee.loader.TomEEJarScanner. 
> ERROR core.ContainerBase: ContainerBase.addChild: start: 
> org.apache.catalina.LifecycleException: Failed to start component 
> [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
>       at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
>       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:652)
>       at 
> org.apache.tomee.catalina.TomcatWebAppBuilder.deployWar(TomcatWebAppBuilder.java:663)
>       at 
> org.apache.tomee.catalina.TomcatWebAppBuilder.deployWebApps(TomcatWebAppBuilder.java:622)
>       at 
> org.apache.tomee.catalina.deployment.TomcatWebappDeployer.deploy(TomcatWebappDeployer.java:43)
>       at org.apache.openejb.assembler.DeployerEjb.deploy(DeployerEjb.java:176)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:192)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:173)
>       at 
> org.apache.openejb.security.internal.InternalSecurityInterceptor.invoke(InternalSecurityInterceptor.java:35)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:192)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:173)
>       at 
> org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:181)
>       at 
> org.apache.openejb.monitoring.StatsInterceptor.invoke(StatsInterceptor.java:100)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:192)
>       at 
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:173)
>       at 
> org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:85)
>       at 
> org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:227)
>       at 
> org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:194)
>       at 
> org.apache.openejb.server.ejbd.EjbRequestHandler.doEjbObject_BUSINESS_METHOD(EjbRequestHandler.java:370)
>       at 
> org.apache.openejb.server.ejbd.EjbRequestHandler.processRequest(EjbRequestHandler.java:181)
>       at 
> org.apache.openejb.server.ejbd.EjbDaemon.processEjbRequest(EjbDaemon.java:344)
>       at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:240)
>       at org.apache.openejb.server.ejbd.EjbServer.service(EjbServer.java:86)
>       at 
> org.apache.openejb.server.httpd.ServerServlet.service(ServerServlet.java:58)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>       at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
>       at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
>       at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
>       at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
>       at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
>       at 
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
>       at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
>       at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
>       at 
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
>       at 
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
>       at 
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at 
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>       at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class 
> org.apache.tomee.loader.TomEEJarScanner
>       at 
> org.apache.tomee.loader.TomcatHelper.configureJarScanner(TomcatHelper.java:166)
>       at 
> org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:1095)
>       at 
> org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:130)
>       at 
> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
>       at 
> org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
>       at 
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5416)
>       at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>       ... 55 more



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