一种基于AOP的企业应用开发技术

An Enterprise Applicatble Developing Technology Based on AOP

面向方面的编程(Aspect-OrientedProgramming,AOP)是一种新的编程技术,它弥补了面向对象的编程(Object-OrientedProgramming,OOP)在跨越模块行为上的不足。AOP引进了Aspect,它将影响多个类的行为封装到一个可重用模块中,它允许程序员对横切关注点(crosscuttingconcerns,即跨越典型职责界限的行为,例如日志记录)进行模块化,从而消除了OOP引起的代码混乱和分散问题,增强了系统的可维护性和代码的重用性。该文首先分析了AOP与OOP的比较,然后给出了AOP的原理和AOP的JBoss实现,最后介绍AOP在设计模式中的应用,并说明了使用它所带来的设计益处以及在应用AOP中应注意的问题。

<Abstrcat>AOP(Aspect-Oriented Programming) is a new programming technology which compensates the weakness of OOP(Object- Oriented Programming) at applying common behavior that spans multiple non-related object models. AOP introduces Aspect,it packages the behavior which impact multiple classes into a reusable model, it allows programmers to model crosscutting concerns(behavior which spans typical duty limit, such as log) and eliminate the code tangling and scattering caused by OOP,the code is more readable and easier to maintain. This essay first compares AOP with OOP, then analyses the AOP elements and gives implementation with JBoss 4.0,then introduces the AOP application in design-pattern, lastly illuminates the advantage of AOP and gives the points that should pay attention to AOP application.