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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=15077 NPE when reloading servlets in org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:686) Summary: NPE when reloading servlets in org.apache.catalina.core.StandardWrapper.allocate(Standa rdWrapper.java:686) Product: Tomcat 4 Version: 4.1.16 Platform: PC OS/Version: Windows NT/2K Status: NEW Severity: Major Priority: Other Component: Catalina:Modules AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Hi Dynamic reloading of a servlet (with or without SingleThreadModel interface) leads to a NullPointerException in org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:686). It seems that the instancePool stack is not properly constructed when the allocated method is call during a reload. The servlet has nothing really special except that it is a second level derivation of HttpServlet and is activated thru RequestDispatcher.forward(). 2002-12-04 17:42:38 StandardContext[/primer]: Le rechargement de ce contexte a démarré 2002-12-04 17:42:38 MYSERVLET01 : MYSERVLET00: DESTROYED 2002-12-04 17:42:38 MYSERVLET01 : MYSERVLET00: DESTROYED 2002-12-04 17:42:38 MYSERVLET00 : MYSERVLET00: DESTROYED 2002-12-04 17:42:38 MYSERVLET00 : MYSERVLET00: DESTROYED 2002-12-04 17:42:38 StandardContext[/primer]: Sending application stop events 2002-12-04 17:42:38 StandardContext[/primer]: Stopping filters 2002-12-04 17:42:38 WebappLoader[/primer]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1.16 \work\Standalone\localhost\primer 2002-12-04 17:42:38 WebappLoader[/primer]: Deploy class files /WEB-INF/classes to C:\IWK\MyApp\Primer\WEB-INF\classes 2002-12-04 17:42:38 WebappLoader[/primer]: Deploy JAR /WEB-INF/lib/myapp.jar to C:\IWK\MyApp\Primer\WEB-INF\lib\myapp.jar 2002-12-04 17:42:38 WebappLoader[/primer]: Deploy JAR /WEB-INF/lib/percobol.jar to C:\IWK\MyApp\Primer\WEB-INF\lib\percobol.jar 2002-12-04 17:42:38 WebappLoader[/primer]: Reloading checks are enabled for this Context 2002-12-04 17:42:38 NamingContextListener[/Standalone/localhost/primer]: Creating JNDI naming context 2002-12-04 17:42:38 NamingContextListener[/Standalone/localhost/primer]: Resource parameters for UserTransaction = null 2002-12-04 17:42:38 StandardContext[/primer]: Configuring application event listeners 2002-12-04 17:42:38 StandardContext[/primer]: Sending application start events 2002-12-04 17:42:38 StandardContext[/primer]: Starting filters 2002-12-04 17:42:38 StandardWrapper[/primer:default]: Chargement du conteneur (container) de servlet default 2002-12-04 17:42:38 StandardWrapper[/primer:invoker]: Chargement du conteneur (container) de servlet invoker 2002-12-04 17:42:38 StandardManager[/primer]: Alimentation de la classe du générateur de nombre aléatoire java.security.SecureRandom 2002-12-04 17:42:38 StandardManager[/primer]: L'alimentation du générateur de nombre aléatoire est terminé 2002-12-04 17:42:38 StandardContext[/primer]: Le rechargement de ce contexte est terminé 2002-12-04 17:42:39 StandardContext[/primer]: Mapping contextPath='/primer' with requestURI='/primer/kix' and relativeURI='/kix' 2002-12-04 17:42:39 StandardContext[/primer]: Trying exact match 2002-12-04 17:42:39 StandardContext[/primer]: Mapped to servlet 'MyApp Executive' with servlet path '/kix' and path info 'null' and update=true 2002-12-04 17:42:39 StandardWrapperValve[MyApp Executive]: Exception lors de lallocation pour la servlet {0} java.lang.NullPointerException at org.apache.catalina.core.StandardWrapper.allocate (StandardWrapper.java:686) at org.apache.catalina.core.StandardWrapperValve.invoke (StandardWrapperValve.java:214) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke (StandardContextValve.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke (StandardContext.java:2407) at org.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke (ErrorDispatcherValve.java:170) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:172) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex t(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service (CoyoteAdapter.java:223) at org.apache.coyote.http11.Http11Processor.process (Http11Processor.java:431) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnectio n(Http11Protocol.java:386) at org.apache.tomcat.util.net.TcpWorkerThread.runIt (PoolTcpEndpoint.java:537) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run (ThreadPool.java:533) at java.lang.Thread.run(Thread.java:536) -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
