java.lang.NullPointerException

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  • WARNING: Exception processing manager org.apache.catalina.session.StandardManager@1bc887b background process java.lang.NullPointerException at org.apache.commons.logging.impl.SLF4JLocationAwareLog.isDebugEnabled(SLF4JLocationAwareLog.java:59) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:201) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:182) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:160) at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:140) at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:134) at org.springframework.web.context.request.ServletRequestAttributes$DestructionCallbackBindingListener.valueUnbound(ServletRequestAttributes.java:269) at org.apache.catalina.session.StandardSession.removeAttributeInternal(StandardSession.java:1649) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:756) at org.apache.catalina.session.StandardSession.isValid(StandardSession.java:592) at org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:682) at org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:667) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1316) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) at java.lang.Thread.run(Unknown Source)
    via by Rusty Wright,
  • WARNING: Exception processing manager org.apache.catalina.session.StandardManager@1bc887b background process java.lang.NullPointerException at org.apache.commons.logging.impl.SLF4JLocationAwareLog.isDebugEnabled(SLF4JLocationAwareLog.java:59) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:201) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:182) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:160) at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:140) at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:134) at org.springframework.web.context.request.ServletRequestAttributes$DestructionCallbackBindingListener.valueUnbound(ServletRequestAttributes.java:269) at org.apache.catalina.session.StandardSession.removeAttributeInternal(StandardSession.java:1649) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:756) at org.apache.catalina.session.StandardSession.isValid(StandardSession.java:592) at org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:682) at org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:667) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1316) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) at java.lang.Thread.run(Unknown Source)
    via by Rusty Wright,
  • We're using jcl-over-slf4j. When we Serialize an instance of SLF4JLocationAwareLog any subsequent calls to SLF4JLocationAwareLog throw a NPE. Would it be possible to improve the Serialization implementation of SLF4JLocationAwareLog either retrieve the LocationAwareLogger on readResolve() or simply check for a null logger instead of throwing an NPE? The following is a stacktrace I get when using jcl-over-slf4j with Spring: [7/28/09 0:14:32:226 MDT] 0000005a SystemErr R java.lang.NullPointerException [7/28/09 0:14:32:226 MDT] 0000005a SystemErr R at org.apache.commons.logging.impl.SLF4JLocationAwareLog.isDebugEnabled(SLF4JLocationAwareLog.java:59) [7/28/09 0:14:32:226 MDT] 0000005a SystemErr R at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:201) [7/28/09 0:14:32:226 MDT] 0000005a SystemErr R at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:182) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:160) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:140) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:134) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at org.springframework.web.context.request.ServletRequestAttributes$DestructionCallbackBindingListener.valueUnbound(ServletRequestAttributes.java:269) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionData.processListeners(SessionData.java:924) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionData.checkSwappableListeners(SessionData.java:564) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.DatabaseSessionData.checkSwappableListeners(DatabaseSessionData.java:331) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionData.sessionUnbound(SessionData.java:997) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionContext.notifySessionInvalidated(SessionContext.java:1100) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionData.invalidate(SessionData.java:621) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.SessionData.internalInvalidate(SessionData.java:586) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.DRSSessionData.internalInvalidate(DRSSessionData.java:252) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.webcontainer.httpsession.HttpSessDRSCacheMsgListener.response(HttpSessDRSCacheMsgListener.java:524) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.drs.stack.DRSClientCallback.processRcvMessage(DRSClientCallback.java:393) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.drs.stack.DRSStack.processRcvMessage(DRSStack.java:295) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.drs.DRSDomain.messageReceived(DRSDomain.java:536) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.drs.ha.DRSAgentClassEvents$1.run(DRSAgentClassEvents.java:714) [7/28/09 0:14:32:227 MDT] 0000005a SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
    via by Mike Youngstrom,
  • Thinking In Software: January 2011
    via by Unknown author,
    • java.lang.NullPointerException at org.apache.commons.logging.impl.SLF4JLocationAwareLog.isDebugEnabled(SLF4JLocationAwareLog.java:59) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:201) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:182) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:160) at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:140) at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:134) at org.springframework.web.context.request.ServletRequestAttributes$DestructionCallbackBindingListener.valueUnbound(ServletRequestAttributes.java:269) at org.apache.catalina.session.StandardSession.removeAttributeInternal(StandardSession.java:1649) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:756) at org.apache.catalina.session.StandardSession.isValid(StandardSession.java:592) at org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:682) at org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:667) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1316) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) at java.lang.Thread.run(Unknown Source)
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