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From Ivan <xhh...@gmail.com>
Subject Re: Class Not Found exception
Date Mon, 25 Jun 2012 09:14:08 GMT
Is the name of the main class for the app client just "Main", e.g. without
any package prefix ? From the exception message, it seems that Geronimo
could not find a class named 'Main'.

2012/6/24 nemesis.sun.now <nemesis.sun.now@gmail.com>

> Hi all,
>
> I've been coding Java EE for a while with NetBeans and Glassfish, but I'm
> learning Geronimo as well. I have created a sample application and there
> was
> a ClassNotFound exception when I tried to publish it to Geronimo in
> Eclipse.
>
> This is an enterprise application EAR, containing 2 module, one for EJB and
> the other is an App Client to read user's input and call the EJB for
> inserting info into the database. The EJB module has a remote interface
> (denoted with @Remote), an implementation EJB (denoted with @Stateless) and
> an entity class (with @Entity). The EJB class has an
> @PersistenceContext(unitName="...") to get an EntityManager to work with
> DB.
> I have created DB/DS and configured the persistence.xml file according to
> Geronimo tutorial.
>
> When I published the EAR, there was this exception:
>
>
> -------------------------------------------------------------------------------------------------------------
> Distribution of module failed.  See log for details.
> AppClientModuleBuilder: Could not load main class: Main
> org.apache.geronimo.common.DeploymentException: AppClientModuleBuilder:
> Could not load main class: Main
>        at
>
> org.apache.geronimo.client.builder.AppClientModuleBuilder.createAppClientClassFinder(AppClientModuleBuilder.java:807)
>        at
>
> org.apache.geronimo.client.builder.AppClientModuleBuilder.addGBeans(AppClientModuleBuilder.java:689)
>        at
>
> org.apache.geronimo.j2ee.deployment.EARConfigBuilder.buildConfiguration(EARConfigBuilder.java:652)
>        at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:257)
>        at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:136)
>        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.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at
>
> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at
>
> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:851)
>        at
> org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:237)
>        at
> org.apache.geronimo.kernel.KernelGBean.invoke(KernelGBean.java:342)
>        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.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at
>
> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at
>
> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:851)
>        at
> org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:237)
>        at
>
> org.apache.geronimo.system.jmx.MBeanGBeanBridge.invoke(MBeanGBeanBridge.java:172)
>        at
>
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
>        at
> com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
>        at
>
> javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1427)
>        at
>
> javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72)
>        at
>
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at
>
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1367)
>        at
>
> javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:788)
>        at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source)
>        at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at
> sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at
>
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at
>
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.ClassNotFoundException: Main in classloader
> HRManager/Client/1.0/car
>        at
>
> org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        at
>
> org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:257)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>        at
>
> org.apache.geronimo.client.builder.AppClientModuleBuilder.createAppClientClassFinder(AppClientModuleBuilder.java:804)
>        ... 43 more
>
> ----------------------------------------------------------------------------------------------------------------
>
> There was something wrong with the Main (containing main()) class, the only
> class in the App Client module which works with the EJB module.
>
> When I worked with NetBeans & Glassfish before, I rarely needed to touch
> the
> deployment descriptor (those xml files) but mostly used annotation. I think
> there is something wrong the the descriptors here, the 3 files from Java
> EE,
> and 3 additional ones from Geronimo.
>
> Can anyone help me diagnose where this error comes from? I'm willing to
> provide more info on the application if you need.
>
> Thanks.
>
> --
> View this message in context:
> http://apache-geronimo.328035.n3.nabble.com/Class-Not-Found-exception-tp3985243.html
> Sent from the Users mailing list archive at Nabble.com.
>



-- 
Ivan

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