I have a very simple (HelloWorld) servlet with an aspect that I am trying to use
with load-time weaving under Tomcat.
My aop.xml:
<aspectj>
<aspects>
<aspect name="HttpServletMonitor"/>
</aspects>
<weaver options="-verbose -XlazyTjp">
<include within="com.company.HWServlet"/>
</weaver>
</aspectj>
public aspect HttpServletMonitor {
public pointcut monitoredOperation(Object operation) :
execution(void HttpServlet.doGet(HttpServletRequest ,
HttpServletResponse )) && this(operation);
void around(Object operation) : monitoredOperation(operation) {
proceed(operation);
// write a tag to file.
}
public HttpServletMonitor(){
}
}
I have the hwmonitor.jar, aop.xml, aspectj.jar and aspectjweaver.jar in my
classpath, and defined javaagent
When I run this, I can see the loader trying to weave, but it�s trying to weave
everything it comes across instead of just HWServlet!
I end up with lots of exceptions of the following. Any thoughts on what I�ve
done to cause these?
warning Register definition failed -- (BCException) malformed
org.aspectj.weaver.EffectiveSignature attribute _java.io.EOFException_
malformed org.aspectj.weaver.EffectiveSignature attribute _java.io.EOFException_
_org.aspectj.weaver.BCException_: malformed
org.aspectj.weaver.EffectiveSignature attribute _java.io.EOFException_
at org.aspectj.weaver.AjAttribute.read(_AjAttribute.java:121_)
at
org.aspectj.weaver.bcel.BcelAttributes.readAjAttributes(_BcelAttributes.java:59_)
at
org.aspectj.weaver.bcel.BcelMethod.unpackAjAttributes(_BcelMethod.java:106_)
at org.aspectj.weaver.bcel.BcelMethod.<init>(_BcelMethod.java:71_)
at
org.aspectj.weaver.bcel.BcelObjectType.getDeclaredMethods(_BcelObjectType.java:188_)
at
org.aspectj.weaver.ReferenceType.getDeclaredMethods(_ReferenceType.java:367_)
at org.aspectj.weaver.ResolvedType.getDeclaredAdvice(_ResolvedType.java:617_)
at
org.aspectj.weaver.ResolvedType.getDeclaredShadowMungers(_ResolvedType.java:633_)
at
org.aspectj.weaver.ResolvedType.collectShadowMungers(_ResolvedType.java:518_)
at
org.aspectj.weaver.ResolvedType.collectCrosscuttingMembers(_ResolvedType.java:448_)
at
org.aspectj.weaver.CrosscuttingMembersSet.addOrReplaceAspect(_CrosscuttingMembersSet.java:58_)
at org.aspectj.weaver.bcel.BcelWeaver.addLibraryAspect(_BcelWeaver.java:166_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerAspects(_ClassLoaderWeavingAdaptor.java:233_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerDefinitions(_ClassLoaderWeavingAdaptor.java:132_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.<init>(_ClassLoaderWeavingAdaptor.java:93_)
at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(_Aj.java:81_)
at org.aspectj.weaver.loadtime.Aj.preProcess(_Aj.java:54_)
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 java.net.URLClassLoader.defineClass(_URLClassLoader.java:260_)
at java.net.URLClassLoader.access$100(_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:306_)
at java.lang.ClassLoader.loadClass(_ClassLoader.java:251_)
at org.apache.catalina.startup.Bootstrap.init(_Bootstrap.java:198_)
at org.apache.catalina.startup.Bootstrap.main(_Bootstrap.java:386_)
If I change the execution line to look for HWServlet.doGet() I get lots of a
different exception:
warning Register definition failed -- (BCException) unknown TypePattern kind: 100
unknown TypePattern kind: 100
_org.aspectj.weaver.BCException_: unknown TypePattern kind: 100
at org.aspectj.weaver.patterns.TypePattern.read(_TypePattern.java:348_)
at
org.aspectj.weaver.patterns.WildTypePattern.readTypePattern150(_WildTypePattern.java:1151_)
at
org.aspectj.weaver.patterns.WildTypePattern.read(_WildTypePattern.java:1123_)
at org.aspectj.weaver.patterns.TypePattern.read(_TypePattern.java:336_)
at
org.aspectj.weaver.patterns.SignaturePattern.read(_SignaturePattern.java:622_)
at org.aspectj.weaver.patterns.KindedPointcut.read(_KindedPointcut.java:272_)
at org.aspectj.weaver.patterns.Pointcut.read(_Pointcut.java:336_)
at org.aspectj.weaver.patterns.AndPointcut.read(_AndPointcut.java:129_)
at org.aspectj.weaver.patterns.Pointcut.read(_Pointcut.java:340_)
at
org.aspectj.weaver.ResolvedPointcutDefinition.read(_ResolvedPointcutDefinition.java:76_)
at org.aspectj.weaver.AjAttribute.read(_AjAttribute.java:101_)
at
org.aspectj.weaver.bcel.BcelAttributes.readAjAttributes(_BcelAttributes.java:59_)
at
org.aspectj.weaver.bcel.BcelObjectType.unpackAspectAttributes(_BcelObjectType.java:249_)
at org.aspectj.weaver.bcel.BcelObjectType.<init>(_BcelObjectType.java:119_)
at org.aspectj.weaver.bcel.BcelWorld.makeBcelObjectType(_BcelWorld.java:244_)
at org.aspectj.weaver.bcel.BcelWorld.resolveDelegate(_BcelWorld.java:239_)
at org.aspectj.weaver.World.resolveToReferenceType(_World.java:277_)
at org.aspectj.weaver.World.resolve(_World.java:205_)
at org.aspectj.weaver.bcel.BcelWeaver.addLibraryAspect(_BcelWeaver.java:144_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerAspects(_ClassLoaderWeavingAdaptor.java:233_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerDefinitions(_ClassLoaderWeavingAdaptor.java:132_)
at
org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.<init>(_ClassLoaderWeavingAdaptor.java:93_)
at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(_Aj.java:81_)
at org.aspectj.weaver.loadtime.Aj.preProcess(_Aj.java:54_)
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 java.net.URLClassLoader.defineClass(_URLClassLoader.java:260_)
at java.net.URLClassLoader.access$100(_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:306_)
at java.lang.ClassLoader.loadClass(_ClassLoader.java:251_)
at org.apache.catalina.startup.Bootstrap.init(_Bootstrap.java:198_)
at org.apache.catalina.startup.Bootstrap.main(_Bootstrap.java:386_)
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