Christoph Nenning created WW-4408:
-------------------------------------
Summary: NPE with ActionContext.getContext().getSession() /
RequestWrapper
Key: WW-4408
URL: https://issues.apache.org/jira/browse/WW-4408
Project: Struts 2
Issue Type: Bug
Components: Core Actions
Affects Versions: 2.3.18
Reporter: Christoph Nenning
Priority: Minor
Since 2.3.18 it happens that I get an NPE when accessing
ActionContext.getContext().getSession().
When i log the Session Map it is printed as "{}" but when calling get() on it,
an NPE is thrown. So it is kind of null but not really null ?
Seems to happen only when no HttpSession is present. The NPE is wrapped in a
lot of RuntimeExceptions:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at
com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:514)
at
com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:524)
at
com.opensymphony.xwork2.inject.ContainerImpl$9.call(ContainerImpl.java:555)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:584)
at
com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:553)
at
com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:257)
at
com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
at
org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:967)
at
org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:435)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:479)
at
org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
at
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.init(FilterInstanceWrapper.java:145)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager._loadFilter(WebAppFilterManager.java:600)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.loadFilter(WebAppFilterManager.java:507)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.getFilterInstanceWrapper(WebAppFilterManager.java:312)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.getFilterChain(WebAppFilterManager.java:385)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:924)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1064)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3837)
at
com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:981)
at
com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:459)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:526)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:312)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:283)
at
com.ibm.ws.ssl.channel.impl.SSLConnectionLink.determineNextChannel(SSLConnectionLink.java:1049)
at
com.ibm.ws.ssl.channel.impl.SSLConnectionLink$MyReadCompletedCallback.complete(SSLConnectionLink.java:643)
at
com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
at
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1864)
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:502)
at
com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:539)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:593)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:537)
at
com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
... 40 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:301)
at
com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:438)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
... 45 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at
com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:469)
at
com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:484)
at
com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:299)
... 47 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:502)
at
com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:539)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:593)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:537)
at
com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
... 52 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:301)
at
com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:438)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
... 57 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at
com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:469)
at
com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:484)
at
com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:299)
... 59 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:502)
at
com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:539)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:593)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:537)
at
com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
... 64 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:301)
at
com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:438)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
... 69 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at
com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:469)
at
com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:484)
at
com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:299)
... 71 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:502)
at
com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:539)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:593)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:537)
at
com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
... 76 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:301)
at
com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:438)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
... 81 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at
com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:469)
at
com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:484)
at
com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:299)
... 83 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:502)
at
com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:539)
at
com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:593)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:537)
at
com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
... 88 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:301)
at
com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:438)
at
com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
... 93 more
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
at
com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at
com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:469)
at
com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:484)
at
com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at
com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:299)
... 95 more
Caused by: java.lang.NullPointerException
my.class.accessing.SessionMap
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