Spring AOP记录器，切入点定义

Question

I'm trying to introduce a logger in my project using Spring AOP, but I'm new to AOP and to AspectJ syntax, so I'm having some troubles...

I've defined a basic aspect-class following some tutorial/docs:

@Aspect
public class Logger {

    @Pointcut("execution(* exportdatamanager.export.ExportType.fetch(..))")
    public void fetch() {
    }

    // ...

    @AfterReturning("fetch()")
    public void fetchingResult(JoinPoint joinPoint, Object result) {
        System.out.println("TEST LOG " + result.toString());
    }
}

But when I run my application I get this exception:

java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut 

What I'm doing wrong, I suppose there's something wrong in my ApsectJ expression...

Can you also suggest me some quick reference to AspectJ syntax supported by Spring AOP?

NOTE

A snippet from my ExportType interface

public interface ExportType {

    List<Object> fetch() throws FetchingStrategyException;

    // ...

}

Answer 1

Ok, I just solved my issue this way:

@AfterReturning(pointcut = "fetch()", returning = "results")
public void fetchingResult(JoinPoint joinPoint, List<Object> results) {
    System.out.println("TEST LOG " + results.toString());
}