2008/1/23, David Avendasora <[EMAIL PROTECTED]>:
>
> I'm sure I'm missing something obvious, but
> resourceManager().pathURLForResourceNamed("Resources/log4j.xml", null,
> null)
>
> in my Application.java class is returning null when I run my app. The
> log4j.xml is in the /Resources/ directory (in both the build and dist
> directories) and flagged as a Resource. Why isn't it being found? It seems
> to be an intermittent problem as it has done this before and then suddenly
> started working.
>
> I get the following NPE in Eclipse Run Log:
>
> [2008-01-23 07:47:16 EST] <main> A fatal exception occurred: null
> [2008-01-23 07:47:16 EST] <main> *java.lang.NullPointerException*
> at com.bestmaid.bakeryManagement.server.Application.<init>(*
> Application.java:38*)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(*Native Method*)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(*
> NativeConstructorAccessorImpl.java:39*)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(*
> DelegatingConstructorAccessorImpl.java:27*)
> at java.lang.reflect.Constructor.newInstance(*Constructor.java:494*)
> at java.lang.Class.newInstance0(*Class.java:350*)
> at java.lang.Class.newInstance(*Class.java:303*)
> at com.webobjects.appserver.WOApplication.main(*WOApplication.java:323*)
> at com.bestmaid.bakeryManagement.server.Application.main(*Application.java
> :23*)
>
> I get the following from Tomcat when it tries to start the deployed
> application:
>
> java.lang.reflect.InvocationTargetException
> 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 com.webobjects.jspservlet.WOServletAdaptor._applicationInit(*
> WOServletAdaptor.java:415*)
> at com.webobjects.jspservlet.WOServletAdaptor.initStatics(*
> WOServletAdaptor.java:78*)
> at com.webobjects.jspservlet.WOServletAdaptor.init(*WOServletAdaptor.java
> :629*)
> at javax.servlet.GenericServlet.init(*GenericServlet.java:212*)
> at org.apache.catalina.core.StandardWrapper.loadServlet(*
> StandardWrapper.java:1161*)
> at org.apache.catalina.core.StandardWrapper.load(*StandardWrapper.java:981
> *)
> at org.apache.catalina.core.StandardContext.loadOnStartup(*
> StandardContext.java:4045*)
> at org.apache.catalina.core.StandardContext.start(*StandardContext.java
> :4351*)
> at org.apache.catalina.core.ContainerBase.addChildInternal(*
> ContainerBase.java:791*)
> at org.apache.catalina.core.ContainerBase.addChild(*ContainerBase.java:771
> *)
> at org.apache.catalina.core.StandardHost.addChild(*StandardHost.java:525*)
> at org.apache.catalina.startup.HostConfig.deployDescriptor(*
> HostConfig.java:626*)
> at org.apache.catalina.startup.HostConfig.deployDescriptors(*
> HostConfig.java:553*)
> at org.apache.catalina.startup.HostConfig.deployApps(*HostConfig.java:488*
> )
> at org.apache.catalina.startup.HostConfig.start(*HostConfig.java:1138*)
> at org.apache.catalina.startup.HostConfig.lifecycleEvent(*HostConfig.java
> :311*)
> at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(*
> LifecycleSupport.java:117*)
> at org.apache.catalina.core.ContainerBase.start(*ContainerBase.java:1053*)
> at org.apache.catalina.core.StandardHost.start(*StandardHost.java:719*)
> at org.apache.catalina.core.ContainerBase.start(*ContainerBase.java:1045*)
> at org.apache.catalina.core.StandardEngine.start(*StandardEngine.java:443*
> )
> at org.apache.catalina.core.StandardService.start(*StandardService.java
> :516*)
> at org.apache.catalina.core.StandardServer.start(*StandardServer.java:710*
> )
> at org.apache.catalina.startup.Catalina.start(*Catalina.java:566*)
> 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.catalina.startup.Bootstrap.start(*Bootstrap.java:288*)
> at org.apache.catalina.startup.Bootstrap.main(*Bootstrap.java:413*)
> Caused by: *com.webobjects.foundation.NSForwardException* [
> java.lang.NullPointerException] null: <
> com.bestmaid.bakeryManagement.server.Application> failed instantiation.
> Exception thrown :
> *java.lang.NullPointerException*: null
> at com.webobjects.foundation._NSUtilities._explainInstantiationException(*
> _NSUtilities.java:567*)
> at com.webobjects.foundation._NSUtilities.instantiateObject(*
> _NSUtilities.java:581*)
> at com.webobjects.appserver.WOApplication.primeApplication(*
> WOApplication.java:411*)
> ... 34 more
>
> If I comment the following out of the Application.java file, it will
> launch:
>
> URL configURL = resourceManager().pathURLForResourceNamed(
> "Resources/log4j.xml", null, null);
> NSLog.out.appendln("Initializing log4j from " + configURL.toString());
> DOMConfigurator.configure(configURL);
>
try:
resourceManager().pathURLForResourceNamed("log4j.xml", null, null)
Thanks,
>
> Dave
>
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--
Daniele Corti
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Messenger: [EMAIL PROTECTED]
--
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open
WINDOWS
--
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--Alistair Young
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