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Posted to dev@tomcat.apache.org by bu...@apache.org on 2002/12/04 18:28:36 UTC
DO NOT REPLY [Bug 15077] New: -
NPE when reloading servlets in org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:686)
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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: tomcat-dev@jakarta.apache.org
ReportedBy: francis.andre@easynet.fr
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
d�marr�
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
g�n�rateur de nombre al�atoire java.security.SecureRandom
2002-12-04 17:42:38 StandardManager[/primer]: L'alimentation du g�n�rateur de
nombre al�atoire est termin�
2002-12-04 17:42:38 StandardContext[/primer]: Le rechargement de ce contexte
est termin�
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)
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