Spring's AOP module

Spring AOP is a Java-based AOP Framework with AspectJ integration. It uses dynamic proxies for aspect weaving and focuses on using AOP to solve enterprise problems. This module is based on Proxy and Decorator Design patterns. This module enables the modularization of cross-cutting concerns to avoid tangling and eliminate scattering. Like DI, it supports loose coupling between the core business service and cross-cutting concerns. You can implement your custom aspects and configure them declaratively in your application without impacting on the code of business objects. It provides much flexibility in the code; you could remove or change the aspect logic without touching the code of the business objects. This is a very important module of the spring framework, so I will discuss it in detail in Chapter 4, Spring Aspect Oriented Programming with Proxy and Decorator Pattern of this book.