ClassLoader inside deloyed bean cannot find existing class
ivanyuan Nov 23, 2009 3:54 PMHi Guru,
With the help from spring integration community, I can successfully deploy spring beans using deployer release 2.5 (jdk5) in JBoss 4.2.2GA and I can also access the deployed beans from another web application.
However I am running into a problem of using ClassLoader inside the deployed spring beans.
From my web application, I can get bean reference called "billingBean". However when I invoke one method of this bean, which will dynamically create some instances using classloader, I got "java.lang.ClassNotFoundException", and the stacktrace is as below:
2009-Nov-23 14:53:17] ERROR - java.lang.ClassNotFoundException: com.iseemedia.provisioningbilling.actionflow.action.AddSubscriptionAction [2009-Nov-23 14:53:17] ERROR - at java.net.URLClassLoader$1.run(URLClassLoader.java:200) [2009-Nov-23 14:53:17] ERROR - at java.security.AccessController.doPrivileged(Native Method) [2009-Nov-23 14:53:17] ERROR - at java.net.URLClassLoader.findClass(URLClassLoader.java:188) [2009-Nov-23 14:53:17] ERROR - at java.lang.ClassLoader.loadClass(ClassLoader.java:306) [2009-Nov-23 14:53:17] ERROR - at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) [2009-Nov-23 14:53:17] ERROR - at java.lang.ClassLoader.loadClass(ClassLoader.java:251) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.actionflow.ActionFlow.buildFlow(ActionFlow.java:49) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.actionflow.ActionFlow.<init>(ActionFlow.java:26) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.actionflow.ActionFlowFactory.getActionFlow(ActionFlowFactory.java:49) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.session.SessionManagement.createSession(SessionManagement.java:173) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.impl.ProvisioningBillingImpl.asyncSubscribe(ProvisioningBillingImpl.java:219) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.provisioningbilling.intf.ServiceBillingAdapter.subscribe(ServiceBillingAdapter.java:171) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.subscription.common.WebServiceBillingAdapter.subscribeRequest(WebServiceBillingAdapter.java:47) [2009-Nov-23 14:53:17] ERROR - at com.iseemedia.subscription.webservice.SubscriptionWS.manageSubscription(SubscriptionWS.java:108) [2009-Nov-23 14:53:17] ERROR - at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [2009-Nov-23 14:53:17] ERROR - at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [2009-Nov-23 14:53:17] ERROR - at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [2009-Nov-23 14:53:17] ERROR - at java.lang.reflect.Method.invoke(Method.java:585) [2009-Nov-23 14:53:17] ERROR - at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:166) [2009-Nov-23 14:53:17] ERROR - at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:82) [2009-Nov-23 14:53:17] ERROR - at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:122) [2009-Nov-23 14:53:17] ERROR - at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:70) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58) [2009-Nov-23 14:53:18] ERROR - at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417) [2009-Nov-23 14:53:18] ERROR - at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269) [2009-Nov-23 14:53:18] ERROR - at java.util.concurrent.FutureTask.run(FutureTask.java:123) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:98) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:236) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:104) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:99) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:352) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:144) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:163) [2009-Nov-23 14:53:18] ERROR - at org.apache.cxf.transport.servlet.AbstractCXFServlet.doGet(AbstractCXFServlet.java:145) [2009-Nov-23 14:53:18] ERROR - at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) [2009-Nov-23 14:53:18] ERROR - at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [2009-Nov-23 14:53:18] ERROR - at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) [2009-Nov-23 14:53:18] ERROR - at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) [2009-Nov-23 14:53:18] ERROR - at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [2009-Nov-23 14:53:18] ERROR - at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [2009-Nov-23 14:53:18] ERROR - at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) [2009-Nov-23 14:53:18] ERROR - at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) [2009-Nov-23 14:53:18] ERROR - at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) [2009-Nov-23 14:53:18] ERROR - at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) [2009-Nov-23 14:53:18] ERROR - at java.lang.Thread.run(Thread.java:595)
The not-found-class, com.iseemedia.provisioningbilling.actionflow.action.AddSubscriptionAction actually is inside the spring archive file. I also tried to copy the spring archive file to default/lib (of course, I renamed it as *.jar), I still got same exception.
Here is the snapshot of my code that will dynamically create some instances. This piece of code worked fine before using the spring deployer.
HashMap<String, Action> aMap = new HashMap<String, Action>(); for (String key : flowDef.getActionMap().keySet()) { ActionDef aDef = flowDef.getActionMap().get(key); Action a = (Action)ClassLoader.getSystemClassLoader().loadClass(aDef.getType()).newInstance(); aMap.put(key, a); }
The bold line is the actual cause of the exception. I just wonder which class loader I should use inside a deployed bean?
Thanks in advance,
Ivan Yuan