Understanding Spring AOP [closed]

Answer 1

Aspect Oriented Programming is sensibly new and it is not a replacement for Object Oriented Programming. In fact, AOP is another way of organizing your Program Structure.

To be more clear I will use some diagrams:

1. What is Aspect?

   |---------------------|------------------|------------------|
   |      Aspect         =     Point cut    +  Advice          |
   |---------------------|------------------|------------------|
   |                     | Where the aspect | What code is     |
   |                     |  is applied      |  executed.       |
   |---------------------|------------------|------------------|
   

   Aspect = Point cut + Advice

2. Type of Advice methods

3. Aspect Example

   @Around( "execution(* *(..))" )
   public Object trace(ProceedingJoinPointproceedingJP)throwsThrowable{
       String methodInformation= proceedingJP.getStaticPart().getSignature().toString();
       logger.trace("Entering "+methodInformation);
       try{
           returnproceedingJP.proceed();
       } catch(Throwable ex) {
           logger.error("Exception in "+methodInformation, ex);
           throw ex;
       } finally {
            logger.trace("Exiting "+methodInformation);
       }
   }