Spring Step Two

02-spring bean Management annotation Preparation Spring Annotation Development Preparation

Annotation Creation Object

The features of these four annotations are consistent. are all created objects.

Injection Properties

06-AOP principle (i.)

Lateral wit

I don't know how.

AOP cuts business-agnostic logic into real logic.

plane-oriented programming (abbreviated AOP) aims to:

1.????? Separation of crosscutting concerns from business logic, independent modularity

2.????? dynamic Add-on functionality without changing existing code

Aop Terminology

AOP Concrete Operation XML

Add a jar package XML add constraint

============================xml======== Enhanced Operation =============================

first output pre-boost then add

Print results

Spring Step Two