一、概述 面向Aspect的程序设计(Aspect Oriented Programming，简称为AOP)是一种关注点分离技术，通过运用Aspect这种程序设计单元，允许开发者使用结构化的设计和代码，反映其对系统的认识方式。和其它的关注点分离技术一样，AOP的目标是使设计和代码更加模块化和更具结构性，使关注点局部化而不是分散于整个系统中，同时和系统其它部分保持良好定义的接口，从而真正达到“关注点分离，分而治之”的目的。AOP构建在已有的技术基础之上，同时提供了自己的一套额外机制，也就是As- First, an overview Aspect Oriented Programming (Aspect Oriented Programming, referred to as AOP) is a focus of separation technology, by using Aspect program design unit, allowing developers to use structured design and code to reflect the system Know the way. As with other focus separation techniques, the goal of AOP is to make designs and code more modular and more structured, to localize concerns instead of being scattered throughout the system while maintaining well-defined interfaces with the rest of the system, So as to truly achieve “separation of concerns, divide and rule” purposes. AOP built on the existing technology, while providing its own set of additional mechanisms, that is, As-