| RE: [aspectj-users] @missing@ exception while using LTW. |
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RE: [aspectj-users]
@missing@ exception while using LTW.
To be continued ... :)
I have compiled my java code and
my aspects separately. While compiling aspects, I received several
warnings like:
[warning] this affected type is
not exposed to the weaver
and
[warning] advice defined in ...
has not been applied
but I've ignored them because
in load-time all types will be available and all advices should be applied
by LTWeaver, right?
Then I run my program, and got
this exception exact number of times as number of aspects declared
in aop.xml:
java.lang.NullPointerException
at org.aspectj.weaver.tools.WeavingAdaptor$WeavingClassFileProvider.getBytes(WeavingAdaptor.java:390)
at org.aspectj.weaver.tools.WeavingAdaptor.getAtAspectJAspectBytes(WeavingAdaptor.java:259)
at org.aspectj.weaver.tools.WeavingAdaptor.weaveClass(WeavingAdaptor.java:181)
at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:66)
at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
at sun.instrument.TransformerManager.transform(TransformerManager.java:122)
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:155)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1629)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:850)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1299)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
...
Any Ideas?
Thanks a lot!
-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx [mailto:aspectj-users-bounces@xxxxxxxxxxx]
On Behalf Of Michael Kantarovich
Sent: Monday, November 07, 2005 8:07 PM
To: aspectj-users@xxxxxxxxxxx
Subject: RE: [aspectj-users] @missing@ exception while using LTW.
Thanks!
I've just figured this out by
myself ... :)
-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx [mailto:aspectj-users-bounces@xxxxxxxxxxx]
On Behalf Of Ron Bodkin
Sent: Monday, November 07, 2005 7:05 PM
To: aspectj-users@xxxxxxxxxxx
Subject: RE: [aspectj-users] @missing@ exception while using LTW.
Hi Michael,
Did you compile the aspect
or just put the source in that directory? With load-time weaving, you still
need to compile your aspects into bytecode, but you don’t need to “weave”
with the classes at build-time. Try compiling your aspect and putting the
result in the same directory, e.g.,
cd WEB-INF\classes
ajc com\test\MyAspect.aj
(of course for production use,
I’d recommend compiling with an ant task and deploying this class file
with the rest of your application…)
10x
Hi everybody!
I'm using aspectj M4 version and trying to enable load-time weaving for my application. The application is web application.
I have created aop.xml under WEB-INF/classes/META-INF.
Here is the file:
<aspectj>
<aspects>
<aspect name="com.test.MyAspect"/>
</aspects>
<weaver options="-XlazyTjp -showWeaveInfo">
<include within="com.test.*"/>
</weaver>
</aspectj>
I'm using weaving agent through the JVMTI.
The trouble is that weaver is unable to find MyAspect, although it's present in directory WEB-INF/classes/com/test.
If I understand correct, I just have to place .aj file in the classpath of my application, and to declare it in aop.xml … So what can be wrong?
Here is the stack trace:
warning Register definition failed -- (RuntimeException) Cannot register non aspect: @missing@ , com.test.MyAspect
Cannot register non aspect: @missing@ , com.test.MyAspect
java.lang.RuntimeException: Cannot register non aspect: @missing@ , com.test.MyAspect
at org.aspectj.weaver.bcel.BcelWeaver.addLibraryAspect(BcelWeaver.java:174)
at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerAspects(ClassLoaderWeavingAdaptor.java:278)
at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerDefinitions(ClassLoaderWeavingAdaptor.java:166)
at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:114)
at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:129)
at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:134)
at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:100)
at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:65)
at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
at sun.instrument.TransformerManager.transform(TransformerManager.java:122)
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:155)
at sun.misc.Unsafe.defineClass(Native Method)
at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:45)
at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:381)
at java.security.AccessController.doPrivileged(Native Method)
at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:377)
at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:76)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:30)
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)
….
Thanks a lot!
Misha._______________________________________________
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