Servlet failed to preload on startup in Web application

[Avinash Kp]

Hi all,

I am getting below exception while deploying EAR in
Weblogic 10.3

Please let me know, if you have solution for the same.

Regards
Avinash K P



[HTTP:101216]Servlet: "TestEventSubmitForm" failed to preload on startup in Web application: "twkmhb". java.lang.NullPointerException at com.test.config.ConfigManager.preload(ConfigManager.java:64) at com.test.config.ConfigManager.get(ConfigManager.java:43) at com.test.servlet.TestEventSubmitForm.init(TestEventSubmitForm.java:57) at javax.servlet.GenericServlet.init(GenericServlet.java:241) at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:283) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(Unknown Source) at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:64) at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58) at weblogic.servlet.internal.StubLifecycleHelper.<init>(StubLifecycleHelper.java:48) at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:521) at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1893) at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1870) at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1790) at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2999) at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1371) at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:468) at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37) at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60) at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200) at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117) at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37) at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60) at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27) at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37) at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212) at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:16) at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:162) at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79) at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:569) at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:140) at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:106) at weblogic.deploy.internal.targetserver.operations.StartOperation.doCommit(StartOperation.java:143) at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:323) at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:820) at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1227) at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:436) at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:163) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:181) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:12) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:67) at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:516) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201) at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)



Here is the web.xml snippet for the above servlet


<servlet>
<servlet-name>TestEventSubmitForm</servlet-name>
<servlet-class>com.test.servlet.TestEventSubmitForm</servlet-class>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>TestEventSubmitForm</servlet-name>
<url-pattern>twk/TestEventSubmitForm</url-pattern>
</servlet-mapping>


Waiting in anticipation for your reply

[Arunan Ramanathan]

I am also facing this same problem.. any one please help me out.

Thanks in advance

[Aashima Arora]

Please post the servlet too