AOP Exception Handling

Question

I see that Guice and Spring use AOP Alliance under the hood for method interceptions, and I\'ve been trying to figure out how to get AOP Alliance to intercept and handle cer

Answer 1

You can catch exceptions with Spring AOP, but I do not know if that matches your requirement for a pure Java framework.

With Spring, you can write a simple AOP interceptor as something like:

@Aspect
public class ErrorInterceptor{
@AfterThrowing(pointcut = "execution(* com.mycompany.package..* (..))", throwing = "ex")
public void errorInterceptor(WidgetException ex) {
    if (logger.isDebugEnabled()) {
        logger.debug("Error Message Interceptor started");
    }

    // DO SOMETHING HERE WITH EX
    logger.debug( ex.getCause().getMessage());


    if (logger.isDebugEnabled()) {
        logger.debug("Error Message Interceptor finished.");
    }
}
}

but there is no way to return to the calling method or continue processing on the subsequent line. However if you handle the exception here, it won't bubble up the chain unless you rethrow it yourself.