URLClassLoader's ClassNotFoundException

Hi All,

I have written a spring xml file which load's an external property file to a class's variable on server startup. Everything look good on server start up and its working fine too. The problem is, every time I do a clean build from my RAD IDE, I get ClassNotFoundException for the class specified in the spring file. Its happening during publishing the changes to the EAR. If I remove the EAR project from the server and do a clean build, I don't get the exception. Anybody knows how I can resolve this? I am using RAD 7.5 IDE with WAS 7.0 Application server.

Below's 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

Anybody? Please?

Thanks

Ok, this is weird. I kept doing clean build multiple times to see if its happening every time and apparently its happening only when the classes are not put in the WEB-INF/classes folder. The URL class loader seems to try to load the classes even before the .class files are created. Will this be any issue anytime during server start up too? Can anybody help me resolve this? I am doing some research on my side too.

Thanks