CannotLoadBeanClassException

[Arjun Reddy]

Hi All,

I am getting the above exception every time I do a clean build from my RAD IDE. The class its referring to is specified in a spring xml file. On server start up everything is fine. It happens only when I do a clean build. Anybody knows why?

Thanks.

[Mark Spritzler]

Sorry for this remark.

It is because you are using RAD.

Mark

[Arjun Reddy]

Mark Spritzler wrote:Sorry for this remark.

It is because you are using RAD.

Mark

Thanks for the reply Mark. Can you tell me why its because of RAD? Is there no way I can avoid this? Problem seems to be with java.net.URLClassLoader.findClass. Below is the stack trace

0000002b webapp        E com.ibm.ws.webcontainer.webapp.WebApp notifyServletContextCreated SRVE0283E: Exception caught while initializing context: {0}
                                 org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.xyz.Test] for bean with name 'com.xyz.Test#0' defined in ServletContext resource [/WEB-INF/spring/sample.xml]; nested exception is java.lang.ClassNotFoundException: com.xyz.Test
	at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1138)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:524)
	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1174)
	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:754)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:422)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
	at com.ibm.ws.webcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:1681)
	at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:374)
	at com.ibm.ws.webcontainer.webapp.WebAppImpl.initialize(WebAppImpl.java:299)
	at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:100)
	at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:166)
	at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:731)
	at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:616)
	at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:376)
	at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:668)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1122)
	at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1319)
	at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:609)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.startModule(ApplicationMgrImpl.java:1567)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl._startModule(ApplicationMgrImpl.java:1515)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl$ApplicationNotifier.classChanged(ApplicationMgrImpl.java:1730)
	at com.ibm.ws.classloader.ClassLoaderManager.checkAndNotify(ClassLoaderManager.java:550)
	at com.ibm.ws.classloader.ClassLoaderManager.access$000(ClassLoaderManager.java:82)
	at com.ibm.ws.classloader.ClassLoaderManager$ReloadTimerTask.alarm(ClassLoaderManager.java:586)
	at com.ibm.ejs.util.am._Alarm.run(_Alarm.java:127)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1563)
Caused by: java.lang.ClassNotFoundException: com.xyz.Test
	at java.net.URLClassLoader.findClass(URLClassLoader.java:423)
	at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java:150)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
	at com.ibm.ws.bootstrap.ExtClassLoader.loadClass(ExtClassLoader.java:90)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
	at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:62)
	at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:58)
	at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:541)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
	at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:509)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
	at org.springframework.util.ClassUtils.forName(ClassUtils.java:242)
	at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:383)
	at org.springfram

Thanks

[Mark Spritzler]

Rad is an IBM product that is tightly coupled to IBM way of thinking. It is very difficult to install the Spring Eclipse plugins.

Therefore the configuration of the die makes itmtough to get it to play nicelymwith things that are not IBM products.

Download Spring Toolsuite instead and use it.

Mark

[Arjun Reddy]

Mark,

Thanks for the reply. I am not using any spring eclipse plugins. I am just using a spring.jar. I will try spring tool suite and see.

[Mark Spritzler]

Arjun Reddy wrote:Mark,

Thanks for the reply. I am not using any spring eclipse plugins. I am just using a spring.jar. I will try spring tool suite and see.

So basically, the IDE doesn't know about anything Spring and therefore the IDE will show errors. but your server had the jar file and runtime loads the correct files to work.

Mark

[Arjun Reddy]

Thanks for the reply Mark. I made the class defined in spring xml file a jar and its working fine now.