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Re: [aspectj-users] NPE while using LTW in tomcat.
|
Hi Shashi,
I've not seen that problem before. The code is asking for the
annotations on an annotation type (presumably your OperationTrail) but
has already discarded some information it needed. I imagine the
difference in what you see when building the jar and when running it
later is due to ordering - whether the annotation is dealt with before
or after the aspect.
Although I can't recreate it, it looks like that code needs some
changes, so I will make those now. I've raised
https://bugs.eclipse.org/bugs/show_bug.cgi?id=279120 to track it.
You aren't using any special options for load time weaving are you?
cheers,
Andy
2009/6/3 Shashikant Kale <Shashikant.Kale@xxxxxxxxxxxxxxxx>:
> Hi,
>
>
>
> I am using aspectj LTW (aspectjweaver-1.6.1) for weaving an aspect available
> in another jar within my web application code.
>
>
>
> While building the jar which contains the aspect, using maven, I have JUnits
> which run without any problems using LTW.
>
>
>
> My aspect code looks as below
>
> @Around("execution (@com.arisglobal.aglite.annotations.OperationTrail
> public * *(..)) && this(executor)")
>
> public Object auditOperation(ProceedingJoinPoint thisJoinPoint,
>
> Object executor) {
>
> …
>
> … aspect code
>
> …
>
> }
>
>
>
> However when I deploy the application in tomcat (with
> javaagent:aspectjweaver-1.6.1.jar option), I get a NPE which I have pasted
> below.
>
>
>
> Jun 4, 2009 12:06:18 PM org.aspectj.weaver.tools.Jdk14Trace error
>
> SEVERE: com/arisglobal/aglite/services/actiontrail/ActionTrailAspect
>
> java.lang.NullPointerException
>
> at
> org.aspectj.weaver.bcel.BcelObjectType.getAnnotationTargetKinds(BcelO
>
> bjectType.java:612)
>
> at
> org.aspectj.weaver.ReferenceType.getAnnotationTargetKinds(ReferenceTy
>
> pe.java:265)
>
> at
> org.aspectj.weaver.patterns.SignaturePattern.checkForIncorrectTargetK
>
> ind(SignaturePattern.java:112)
>
> at
> org.aspectj.weaver.patterns.SignaturePattern.checkForIncorrectTargetK
>
> ind(SignaturePattern.java:94)
>
> at
> org.aspectj.weaver.patterns.SignaturePattern.resolveBindings(Signatur
>
> ePattern.java:87)
>
> at
> org.aspectj.weaver.patterns.KindedPointcut.resolveBindings(KindedPoin
>
> tcut.java:262)
>
> at
> org.aspectj.weaver.patterns.AndPointcut.resolveBindings(AndPointcut.j
>
> ava:75)
>
> at org.aspectj.weaver.patterns.Pointcut.resolve(Pointcut.java:196)
>
> at
> org.aspectj.weaver.bcel.AtAjAttributes.handleAroundAnnotation(AtAjAtt
>
> ributes.java:1308)
>
> at
> org.aspectj.weaver.bcel.AtAjAttributes.readAj5MethodAttributes(AtAjAt
>
> tributes.java:403)
>
> at
> org.aspectj.weaver.bcel.BcelMethod.unpackAjAttributes(BcelMethod.java
>
> :189)
>
> at org.aspectj.weaver.bcel.BcelMethod.<init>(BcelMethod.java:96)
>
> at
> org.aspectj.weaver.bcel.BcelObjectType.getDeclaredMethods(BcelObjectT
>
> ype.java:264)
>
> at
> org.aspectj.weaver.bcel.LazyClassGen.<init>(LazyClassGen.java:303)
>
> at
> org.aspectj.weaver.bcel.BcelObjectType.getLazyClassGen(BcelObjectType
>
> .java:524)
>
> at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1728)
>
> at
> org.aspectj.weaver.bcel.BcelWeaver.weaveWithoutDump(BcelWeaver.java:1
>
> 696)
>
> at
> org.aspectj.weaver.bcel.BcelWeaver.weaveAndNotify(BcelWeaver.java:145
>
> 8)
>
> at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1244)
>
> at
> org.aspectj.weaver.tools.WeavingAdaptor.getWovenBytes(WeavingAdaptor.
>
> java:423)
>
> at
> org.aspectj.weaver.tools.WeavingAdaptor.weaveClass(WeavingAdaptor.jav
>
> a:286)
>
> at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:95)
>
> at
> org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(C
>
> lassPreProcessorAgentAdapter.java:52)
>
> at
> sun.instrument.TransformerManager.transform(TransformerManager.java:1
>
> 22)
>
> at
> sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java
>
> :155)
>
> at java.lang.ClassLoader.defineClass1(Native Method)
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
>
>
>
> I also tried using aspectjweaver-1.6.4 version however got the same error.
>
>
>
> Could somebody please point to any solution?
>
>
>
> Thanks in advance,
>
> Shashi
>
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