[jboss-as7-dev] [Resteasy-developers] NPE at org.jboss.resteasy.logging.Logger.classInClasspath(Logger.java:62)

Wed Jun 22 16:20:07 EDT 2011

https://issues.jboss.org/browse/AS7-1092

On 6/22/11 3:15 PM, Jason T. Greene wrote:
> BTW looking at the stack trace in more detail, this looks like its a
> portable CDI extension, which means it probably needs to be set to the
> deployment CL.
>
> On 6/22/11 3:09 PM, Bill Burke wrote:
>> Well, the code in question would have to pass a NULL classloader, so
>> Class.forName(name, false, null) would end up using the bootclassloader,
>> which usually is not aware of your deployment, so you get classes loaded
>> by the bootloader that may be overriden in the deployment or only
>> available in the deployment.  At least thats the problems we've had in
>> the past.
>>
>> On 6/22/11 4:05 PM, David M. Lloyd wrote:
>>> I admit you have me baffled here.
>>>
>>> Class.forName(name, false, classLoader); is no more likely to cause CCE
>>> or linkage errors than classLoader.loadClass(name).
>>>
>>> It also has the benefit of being able to load array types and deal
>>> properly with the aforementioned null classLoader situation.  And, as an
>>> added bonus it gives you the option to initialize the class, which you
>>> can't do via plain calls on ClassLoader.  Overall it's a better API to use.
>>>
>>> On 06/22/2011 03:01 PM, Bill Burke wrote:
>>>> Using Class.forName() is perhaps one of the biggest causes of CCEs and CLEs.
>>>>
>>>>
>>>> On 6/22/11 3:37 PM, David M. Lloyd wrote:
>>>>> It is perfectly valid to have a context class loader of "null" which is
>>>>> one value used by the JDK to mean the default system class loader.  You
>>>>> can never assume the TCCL is non-null.  It's another good reason to use
>>>>> Class.forName() instead of classLoader.loadClass().
>>>>>
>>>>> Thread.currentThread() will never be null.
>>>>>
>>>>> On 06/22/2011 02:30 PM, Bill Burke wrote:
>>>>>> Not sure how that NPE is possible.  Thread.currentThread() or
>>>>>> Thread.currentThread().getContextClassLoader() has to be NULL.  If AS7
>>>>>> is overriding ContextClassLoader to be NULL then thats pretty worrisome.
>>>>>>
>>>>>> On 6/22/11 2:28 PM, Juergen Zimmermann wrote:
>>>>>>> JBoss 7 (Jenkins build 1253) meanwhile works regarding the
>>>>>>> NoMessageBodyWriterFoundFailure.
>>>>>>>
>>>>>>> However, when I want to also use Seam REST, I'm getting a NPE at
>>>>>>> org.jboss.resteasy.logging.Logger.classInClasspath(Logger.java:62). Please
>>>>>>> see the stacktrace:
>>>>>>>
>>>>>>> 20:20:06,541 INFO  [org.jboss.weld] (MSC service thread 1-1) Processing CDI
>>>>>>> deployment: swe2.ear
>>>>>>> 20:20:06,566 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1)
>>>>>>> MSC00001: Failed to start service
>>>>>>> jboss.deployment.unit."swe2.ear".POST_MODULE:
>>>>>>> org.jboss.msc.service.StartException in service
>>>>>>> jboss.deployment.unit."swe2.ear".POST_MODULE: Failed to process phase
>>>>>>> POST_MODULE of deployment "swe2.ear"
>>>>>>> 	at
>>>>>>> org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUn
>>>>>>> itPhaseService.java:121)
>>>>>>> 	at
>>>>>>> org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerI
>>>>>>> mpl.java:1738)
>>>>>>> 	at
>>>>>>> org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControl
>>>>>>> lerImpl.java:2325)
>>>>>>> 	at
>>>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.ja
>>>>>>> va:886) [:1.6.0_26]
>>>>>>> 	at
>>>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:9
>>>>>>> 08) [:1.6.0_26]
>>>>>>> 	at java.lang.Thread.run(Thread.java:662) [:1.6.0_26]
>>>>>>> Caused by: java.lang.RuntimeException: Error instantiating class
>>>>>>> org.jboss.resteasy.cdi.ResteasyCdiExtension
>>>>>>> 	at
>>>>>>> org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:282)
>>>>>>> 	at
>>>>>>> org.jboss.weld.util.ServiceLoader.loadService(ServiceLoader.java:238)
>>>>>>> 	at
>>>>>>> org.jboss.weld.util.ServiceLoader.loadServiceFile(ServiceLoader.java:194)
>>>>>>> 	at org.jboss.weld.util.ServiceLoader.reload(ServiceLoader.java:157)
>>>>>>> 	at
>>>>>>> org.jboss.weld.util.ServiceLoader.iterator(ServiceLoader.java:346)
>>>>>>> 	at
>>>>>>> org.jboss.as.weld.deployment.processors.WeldPortableExtensionProcessor.loadA
>>>>>>> ttachments(WeldPortableExtensionProcessor.java:84)
>>>>>>> 	at
>>>>>>> org.jboss.as.weld.deployment.processors.WeldPortableExtensionProcessor.deplo
>>>>>>> y(WeldPortableExtensionProcessor.java:78)
>>>>>>> 	at
>>>>>>> org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUn
>>>>>>> itPhaseService.java:115)
>>>>>>> 	... 5 more
>>>>>>> Caused by: java.lang.ExceptionInInitializerError
>>>>>>> 	at
>>>>>>> org.jboss.resteasy.cdi.ResteasyCdiExtension.<init>(ResteasyCdiExtension.java
>>>>>>> :44)
>>>>>>> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>>>>>>> Method) [:1.6.0_26]
>>>>>>> 	at
>>>>>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAcces
>>>>>>> sorImpl.java:39) [:1.6.0_26]
>>>>>>> 	at
>>>>>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstruc
>>>>>>> torAccessorImpl.java:27) [:1.6.0_26]
>>>>>>> 	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>>>>>> [:1.6.0_26]
>>>>>>> 	at
>>>>>>> org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:273)
>>>>>>> 	... 12 more
>>>>>>> Caused by: java.lang.NullPointerException
>>>>>>> 	at
>>>>>>> org.jboss.resteasy.logging.Logger.classInClasspath(Logger.java:62)
>>>>>>> 	at org.jboss.resteasy.logging.Logger.<clinit>(Logger.java:75)
>>>>>>> 	... 18 more
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>> _______________________________________________
>>>>>>> Resteasy-developers mailing list
>>>>>>> Resteasy-developers at lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/resteasy-developers
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>
>
>


-- 
Jason T. Greene
JBoss, a division of Red Hat