在AOP中使用标注改进日志功能的实现

面向方面编程(AOP)可避免横切关注点对核心代码的不良影响，但AOP中的方法签名匹配模式难以精确表达系统中的横切点，使得在大中型系统中直接使用连接点匹配方式捕获某些横切点，同样会降低系统的可读性和模块化。该文以日志功能为例，研究如何使用标注来辅助AspectJ改进与日志功能相关的横切点定义，从而改善代码的可阅读性，提高程序的可维护性，并实现日志内容的可配置性。

Implementation of Improving Logging Function in AOP by Annotation

Aspect Oriented Programming(AOP) can be used to avoid the disadvantage to the core code caused by cross-cutting concerns. However, because the method-signature pattern of the AOP can not express the cross-cutting concerns of the system exactly, matching some cross-cutting concerns by capturing the join point directly decreases the readability and modularity of system. A method for improving the definition of cross-cutting concerns of logging is studied in this paper. Such method improves the readability and the maintainability of the program, as well as implementing the flexibility of logging content.