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https://issues.apache.org/jira/browse/SLING-530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644998#action_12644998
]
Felix Meschberger commented on SLING-530:
-----------------------------------------
Another source of a NullPointerException on shutdown is the cleanup of any JSP
servlets, as in :
16.05.2008 18:55:40.480 *ERROR* [main] org.apache.sling.scripting.jsp
[org.apache.sling.scripting.jsp.JspScriptEngineFactory] The deactivate method
has thrown an exception
(java.lang.NullPointerException) java.lang.NullPointerException
at
org.eclipse.equinox.http.servlet.internal.ServletContextAdaptor.getAttribute(ServletContextAdaptor.java
:60)
at
org.apache.sling.engine.impl.helper.SlingServletContext.getAttribute(SlingServletContext.java:175)
at
org.apache.sling.scripting.jsp.JspServletContext.getAttribute(JspServletContext.java:123)
at
org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.destroy(JspServletWrapper.java:445)
at
org.apache.sling.scripting.jsp.jasper.compiler.JspRuntimeContext.destroy(JspRuntimeContext.java:247)
at
org.apache.sling.scripting.jsp.JspScriptEngineFactory.deactivate(JspScriptEngineFactory.java:228)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
.....
Also here, the cause is the Equinox servlet container bridge, which has already
disposed off the servlet container's servlet context.
> JspScriptEngineFactory throws NullPointerException on deactivate
> ----------------------------------------------------------------
>
> Key: SLING-530
> URL: https://issues.apache.org/jira/browse/SLING-530
> Project: Sling
> Issue Type: Bug
> Components: Scripting JSP
> Affects Versions: Scripting JSP 2.0.2
> Environment: Darwin 9.3.0 Darwin Kernel Version 9.3.0: Fri May 23
> 00:49:16 PDT 2008; root:xnu-1228.5.18~1/RELEASE_I386 i386
> Reporter: Dominique Jäggi
> Assignee: Felix Meschberger
> Priority: Minor
>
> Upon shutting down Sling, the following exception is thrown:
> 13.06.2008 09:32:17.491 *ERROR* [main]
> org.apache.sling.scripting.jsp.JspScriptEngineFactory deactivate: Caught
> NullPointerException ! Just logging java.lang.NullPointerException
> at
> org.eclipse.equinox.http.servlet.internal.ServletContextAdaptor.removeAttribute(ServletContextAdaptor.java:75)
> at
> org.apache.sling.engine.impl.helper.SlingServletContext.removeAttribute(SlingServletContext.java:204)
> at
> org.apache.sling.scripting.jsp.JspScriptEngineFactory.deactivate(JspScriptEngineFactory.java:244)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.felix.scr.impl.ImmediateComponentManager.disposeImplementationObject(ImmediateComponentManager.java:269)
> at
> org.apache.felix.scr.impl.ImmediateComponentManager.deleteComponent(ImmediateComponentManager.java:150)
> at
> org.apache.felix.scr.impl.DelayedComponentManager.deleteComponent(DelayedComponentManager.java:61)
> at
> org.apache.felix.scr.impl.AbstractComponentManager.deactivateInternal(AbstractComponentManager.java:549)
> at
> org.apache.felix.scr.impl.AbstractComponentManager.deactivate(AbstractComponentManager.java:233)
> at
> org.apache.felix.scr.impl.DependencyManager.serviceRemoved(DependencyManager.java:242)
> at
> org.apache.felix.scr.impl.DependencyManager.serviceChanged(DependencyManager.java:124)
> at
> org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:765)
> at
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:623)
> at
> org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:554)
> at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:3612)
> at org.apache.felix.framework.Felix.access$000(Felix.java:36)
> at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:626)
> at
> org.apache.felix.framework.ServiceRegistry.fireServiceChanged(ServiceRegistry.java:559)
> at
> org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:96)
> at
> org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:112)
> at
> org.apache.sling.engine.impl.helper.SlingServletContext.dispose(SlingServletContext.java:101)
> at
> org.apache.sling.engine.impl.SlingMainServlet.deactivate(SlingMainServlet.java:629)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.felix.scr.impl.ImmediateComponentManager.disposeImplementationObject(ImmediateComponentManager.java:269)
> at
> org.apache.felix.scr.impl.ImmediateComponentManager.deleteComponent(ImmediateComponentManager.java:150)
> at
> org.apache.felix.scr.impl.AbstractComponentManager.deactivateInternal(AbstractComponentManager.java:549)
> at
> org.apache.felix.scr.impl.AbstractComponentManager.deactivate(AbstractComponentManager.java:233)
> at
> org.apache.felix.scr.impl.DependencyManager.serviceRemoved(DependencyManager.java:242)
> at
> org.apache.felix.scr.impl.DependencyManager.serviceChanged(DependencyManager.java:124)
> at
> org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:765)
> at
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:623)
> at
> org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:554)
> at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:3612)
> at org.apache.felix.framework.Felix.access$000(Felix.java:36)
> at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:626)
> at
> org.apache.felix.framework.ServiceRegistry.fireServiceChanged(ServiceRegistry.java:559)
> at
> org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:96)
> at
> org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:112)
> at
> org.eclipse.equinox.http.servlet.internal.Activator.removeProxyServlet(Activator.java:84)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.destroy(ProxyServlet.java:43)
> at
> org.apache.sling.launcher.webapp.SlingServlet.destroy(SlingServlet.java:210)
> (...)
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