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Re: [aspectj-users] org.aspectj.weaver.bcel.BcelWorld - Unable to find class
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Hey Andy,
Thanks for the response. You were right, I did see the other post about the
bcel caching option. I also tried the following advice you mentioned:
@Around("execution(public * com.something.services..*Bean.*(*)) &&
args(payload)")
public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
Throwable {...
and it seems to work just fine in my Spring unit test, but when I deploy it
to my application server the call doesn't get intercepted (and I have other
interceptors running just fine in the same aop.xml, etc.) For whatever
reason, AspectJ can't resolve the Payload return and parameter type with
respect to this signature:
com.something.services..*Bean.*
Now here's where it gets weird: I've changed the above to advise the same
signature in a different package:
@Around("execution(public com.x.y.z.payload.Payload
com.something.COMPLETELY.DIFFERENT.services..*Bean.*(com.x.y.z.payload.Payload))
&&
args(payload)")
public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
Throwable {...
The above works just fine, I'm baffled.
The implementations that weren't matching the
com.something.services..*Bean.* advice did happen to live in an external JAR
file (which was on the classpath, I could call the code directly). However,
I even unjarred them and put the .class files on the classpath with no
success.
Anyway, this smells like a class loading problem that I can't explain, but I
think I've solved my problem by working around it (changing the package
name). However, I can't explain why this wasn't working...
Thanks,
-Jon
Andy Clement wrote:
>
> Good old gmail... it helped me discover where I'd seen it before.
>
> http://dev.eclipse.org/mhonarc/lists/aspectj-users/msg10323.html
>
> Perhaps you already found that thread as it is one in which I
> suggested the bcelRepositoryCaching option. However, that thread
> didn't end with a post covering the solution unfortunately :(
>
> Just to help you progress - there are some variations of pointcut you
> can try (I'm not sure which part you wildcarded when you said you had
> tried):
>
> What you have:
> @Around("execution(public com.x.y.z.payload.Payload
> com.something.services..*Bean.*(com.x.y.z.payload.Payload)) &&
> args(payload)")
> public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
> Throwable {...
>
> Wildcard parameter:
> @Around("execution(public com.x.y.z.payload.Payload
> com.something.services..*Bean.*(*)) && args(payload)")
> public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
> Throwable {...
>
> Wild return type:
> @Around("execution(public * com.something.services..*Bean.*(*)) &&
> args(payload)")
> public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
> Throwable {...
>
> Object binding:
> @Around("execution(public * com.something.services..*Bean.*(*)) &&
> args(payload)")
> public Object doStuff(ProceedingJoinPoint jp, Object payload) throws
> Throwable {... if (payload instanceof Payload) {...
>
> that last one removing all trace of Payload apart from inside the
> advice itself.
>
> Have you tried with the return type of doStuff advice matching the
> join point? (ie. 'Payload' rather than Object).
>
> Or you could try code style to see if that fixes it (that will confirm
> for me it is an AspectJ issue and not an environment issue - like a
> misbehaving classloader)
>
> I would like to get to the bottom of it this time around, but thought
> I'd present some options in the meantime.
>
> What join point are you actually trying to match on? If you enable
> -verbose -debug in the weaver options section of aop.xml, that you see
> the type containing the joinpoint correctly passed to the weaver for
> weaving?
>
> Andy
>
>
> 2009/11/17 Jonathan T Cone <cone0010@xxxxxxxxxxx>:
>>
>> I'm using AspectJ LTW with Spring and having the trouble with the
>> following
>> around advice:
>>
>> @Around("execution(public com.x.y.z.payload.Payload
>> com.something.services..*Bean.*(com.x.y.z.payload.Payload)) &&
>> args(payload)")
>>
>> public Object doStuff(ProceedingJoinPoint jp, Payload payload) throws
>> Throwable {...
>>
>>
>> For whatever reason, this is not intercepting and is throwing a bizarre
>> exception that I've included at the bottom. I have other interceptors in
>> the same application that use the com.x.y.z.payload.Payload class as a
>> parameter and return type and they work just fine. I've tried with
>> -Xset:bcelRepositoryCaching=false as well.
>>
>> It appears that for some reason AspectJ can't find the Payload class for
>> this particular advice. Below is just one example of the Exception,
>> notice
>> the class name. It appears BCEL/AspectJ try a bunch of different
>> combinations (there are about 20 stack traces similar to this one) of
>> package names, none of which exist.
>>
>> I've turned on classloading logging and it appears the class gets loaded
>> at
>> the end of all these exceptions. I could really use a tip here, the
>> class
>> is on the classpath and I'm not having problems referencing it from the
>> application. In fact, I can change the advice to use a wildcard and the
>> code works fine in a unit test (but not when deployed to the app server).
>> I've tested this in 1.6.6. Any ideas what I should try next?
>>
>>
>> 2009-11-16 15:57:31,515 ERROR [main] org.aspectj.weaver.bcel.BcelWorld -
>> Unable to find class 'java.lang.com.x.y.z.payload.Payload' in repository
>> java.lang.ClassNotFoundException: java.lang.com.x.y.z.payload.Payload not
>> found.
>> at
>> org.aspectj.apache.bcel.util.NonCachingClassLoaderRepository.loadClass(NonCachingClassLoaderRepository.java:222)
>> at
>> org.aspectj.weaver.bcel.BcelWorld.lookupJavaClass(BcelWorld.java:224)
>> at
>> org.aspectj.weaver.bcel.BcelWorld.resolveDelegate(BcelWorld.java:205)
>> at
>> org.aspectj.weaver.ltw.LTWWorld.resolveDelegate(LTWWorld.java:107)
>> at org.aspectj.weaver.World.resolveToReferenceType(World.java:363)
>> at org.aspectj.weaver.World.resolve(World.java:258)
>> at
>> org.aspectj.weaver.patterns.SimpleScope.lookupType(SimpleScope.java:63)
>> at
>> org.aspectj.weaver.bcel.AtAjAttributes$BindingScope.lookupType(AtAjAttributes.java:1666)
>> at
>> org.aspectj.weaver.patterns.WildTypePattern.lookupTypeInScope(WildTypePattern.java:717)
>> at
>> org.aspectj.weaver.patterns.WildTypePattern.resolveBindingsFromFullyQualifiedTypeName(WildTypePattern.java:704)
>> at
>> org.aspectj.weaver.patterns.WildTypePattern.resolveBindings(WildTypePattern.java:632)
>> at
>> org.aspectj.weaver.patterns.SignaturePattern.resolveBindings(SignaturePattern.java:73)
>> at
>> org.aspectj.weaver.patterns.KindedPointcut.resolveBindings(KindedPointcut.java:262)
>> at
>> org.aspectj.weaver.patterns.AndPointcut.resolveBindings(AndPointcut.java:75)
>> at org.aspectj.weaver.patterns.Pointcut.resolve(Pointcut.java:196)
>> at
>> org.aspectj.weaver.bcel.AtAjAttributes.handleAroundAnnotation(AtAjAttributes.java:1152)
>> at
>> org.aspectj.weaver.bcel.AtAjAttributes.readAj5MethodAttributes(AtAjAttributes.java:389)
>> at
>> org.aspectj.weaver.bcel.BcelMethod.unpackAjAttributes(BcelMethod.java:186)
>> at org.aspectj.weaver.bcel.BcelMethod.<init>(BcelMethod.java:95)
>> at
>> org.aspectj.weaver.bcel.BcelObjectType.getDeclaredMethods(BcelObjectType.java:258)
>> at
>> org.aspectj.weaver.bcel.LazyClassGen.<init>(LazyClassGen.java:297)
>> at
>> org.aspectj.weaver.bcel.BcelObjectType.getLazyClassGen(BcelObjectType.java:522)
>> at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1726)
>> at
>> org.aspectj.weaver.bcel.BcelWeaver.weaveWithoutDump(BcelWeaver.java:1694)
>> at
>> org.aspectj.weaver.bcel.BcelWeaver.weaveAndNotify(BcelWeaver.java:1464)
>> at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1245)
>> at
>> org.aspectj.weaver.tools.WeavingAdaptor.getWovenBytes(WeavingAdaptor.java:394)
>> at
>> org.aspectj.weaver.tools.WeavingAdaptor.weaveClass(WeavingAdaptor.java:281)
>> at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:95)
>> at
>> org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>> at
>> org.springframework.context.weaving.AspectJWeavingEnabler$AspectJClassBypassingClassFileTransformer.transform(AspectJWeavingEnabler.java:92)
>> at
>> org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer.transform(InstrumentationLoadTimeWeaver.java:181)
>> at
>> sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>> at
>> sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>> at java.lang.ClassLoader.defineClass1(Native Method)
>> at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>> at
>> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>> at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>> at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>> at
>> org.springframework.util.ClassUtils.forName(ClassUtils.java:211)
>> at
>> org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:385)
>> at
>> org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1138)
>> at
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:573)
>> at
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:521)
>> at
>> org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1177)
>> at
>> org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:222)
>> at
>> org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:505)
>> at
>> org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:362)
>> at
>> org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:84)
>> at
>> org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:42)
>> at
>> org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:173)
>> at
>> org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:197)
>> at
>> org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
>> at
>> org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
>> at
>> org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:255)
>> at
>> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:111)
>> at
>> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:148)
>> at
>> org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
>> at
>> org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
>> at
>> org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
>> at
>> org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
>> at
>> org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
>> at
>> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:97)
>> at
>> oracle.jdevimpl.junit.runner.junit4.JUnit4Testable.run(JUnit4Testable.java:24)
>> at
>> oracle.jdevimpl.junit.runner.TestExecution.run(TestExecution.java:27)
>> at
>> oracle.jdevimpl.junit.runner.JUnitTestRunner.main(JUnitTestRunner.java:88)
>>
>>
>>
>>
>>
>> --
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>>
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