AspectJ - Download time weaving, privileged aspect and pointcut for a private method of the JRE class

Question

I am trying to set a pointcut to a private java.net.AbstractSocketImpl.connectToAddress (..) method and I want to use a temporary weave. This is my test code:

public class Main { public static void main(String args[]) throws Throwable { new java.net.Socket("localhost", 10111); } } 

and this is my preferred aspect:

 privileged aspect PrivAspect { before() : call(* java.net.AbstractPlainSocketImpl.connectToAddress(..)) { System.out.println("It works"); } } 

and this is META-INF / aop.xml

 <aspectj> <aspects> <aspect name="PrivAspect"/> </aspects> <weaver options="-verbose -Xset:weaveJavaPackages=true"/> </aspectj> 

This is how I compile the code:

 $ javac Main.java $ java -jar ../lib/aspectjtools-1.6.11.jar -source 6 -cp .:$CLASSPATH PrivAspect.aj [warning] this affected type is not exposed to the weaver: java.net.AbstractPlainSocketImpl (needed for privileged access) [Xlint:typeNotExposedToWeaver] /home/batto/work/ajtest/test/PrivAspect.aj:2 [warning] advice defined in PrivAspect has not been applied [Xlint:adviceDidNotMatch] 2 warnings $ java -cp .:$CLASSPATH -javaagent:../lib/aspectjweaver-1.6.11.jar Main 

The last line throws the expected exception "refused" (port is closed), but the tip is not called.

What is the problem?

Thanks.

EDIT: I know that java.net.AbstractPlainSocketImpl.connectToAddress (..) is being called (I was debugging Main in Eclipse).

Answer 1

It seems that after compilation at compile time it refers to a class not specified in inpath (java.net.AbstractPlainSocketImpl). You must specify which .class / .jar files should be “woven” by AspectJ. More details here: http://www.eclipse.org/aspectj/doc/released/devguide/ajc-ref.html