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Posted to dev@struts.apache.org by Usama Rashwan <fo...@opensymphony.com> on 2007/03/17 21:47:22 UTC
NPE in CodebehindUnknownHandler
Hi ,
I faced a NPE when i try to use CodebehindUnknownHandler below are the full stack trace for this exception , and after i spend some time investigating for the cause of this error it turned to me that I defined [code]struts.codebehind.defaultPackage=babPackage[/code] with incorrect package name after I fixed the package name error it works fine but I think the exception was miss leading.
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:223)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:304)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:77)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3600)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4193)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:904)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:867)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:290)
at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:454)
at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:492)
at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:491)
at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:542)
at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:490)
at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:40)
at com.bab.common.commands.xwork.XworkCommandManager.getCommand(XworkCommandManager.java:21)
... 29 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:136)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:49)
at com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:431)
at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:446)
at com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:48)
at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:288)
... 36 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:464)
at com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:501)
at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:549)
at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:134)
... 41 more
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:409)
at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:461)
... 46 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:388)
... 47 more
Caused by: java.lang.NullPointerException
at org.apache.struts2.codebehind.CodebehindUnknownHandler.<init>(CodebehindUnknownHandler.java:73)
... 52 more
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Re: NPE in CodebehindUnknownHandler
Posted by Don Brown <do...@gmail.com>.
Good catch. I filed the ticket [1] and committed the change. Thanks
for pointing this out.
Don
[1] https://issues.apache.org/struts/browse/WW-1826
On 3/17/07, Usama Rashwan <fo...@opensymphony.com> wrote:
> Hi ,
> I faced a NPE when i try to use CodebehindUnknownHandler below are the full stack trace for this exception , and after i spend some time investigating for the cause of this error it turned to me that I defined [code]struts.codebehind.defaultPackage=babPackage[/code] with incorrect package name after I fixed the package name error it works fine but I think the exception was miss leading.
>
>
> at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:223)
> at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:304)
> at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:77)
> at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3600)
> at org.apache.catalina.core.StandardContext.start(StandardContext.java:4193)
> at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
> at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
> at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
> at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:904)
> at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:867)
> at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
> at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
> at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
> at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
> at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
> at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
> at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
> at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
> at org.apache.catalina.core.StandardService.start(StandardService.java:450)
> at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
> at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
> at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:290)
> at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:454)
> at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:492)
> at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:491)
> at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:542)
> at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:490)
> at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:40)
> at com.bab.common.commands.xwork.XworkCommandManager.getCommand(XworkCommandManager.java:21)
> ... 29 more
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
> at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:136)
> at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:49)
> at com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:431)
> at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:446)
> at com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:48)
> at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:288)
> ... 36 more
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
> at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:464)
> at com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:501)
> at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:549)
> at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:499)
> at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
> at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:134)
> ... 41 more
> Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
> at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:409)
> at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:461)
> ... 46 more
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:388)
> ... 47 more
> Caused by: java.lang.NullPointerException
> at org.apache.struts2.codebehind.CodebehindUnknownHandler.<init>(CodebehindUnknownHandler.java:73)
> ... 52 more
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> Posted via Jive Forums
> http://forums.opensymphony.com/thread.jspa?threadID=71257&messageID=133323#133323
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@struts.apache.org
> For additional commands, e-mail: dev-help@struts.apache.org
>
>
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