利用责任链模式设计一个拦截器 | crossoverJie's Blog



利用责任链模式设计一个拦截器 | crossoverJie's Blog

近期在做 Cicada 的拦截器功能,正好用到了责任链模式。

这个设计模式在日常使用中频率还是挺高的,借此机会来分析分析。

责任链模式

先来看看什么是责任链模式。

引用一段维基百科对其的解释:

责任链模式在面向对象程式设计里是一种软件设计模式,它包含了一些命令对象和一系列的处理对象。每一个处理对象决定它能处理哪些命令对象,它也知道如何将它不能处理的命令对象传递给该链中的下一个处理对象。该模式还描述了往该处理链的末尾添加新的处理对象的方法。

光看这段描述可能大家会觉得懵,简单来说就是该设计模式用于对某个对象或者请求进行一系列的处理,这些处理逻辑正好组成一个链条。

下面来简单演示使用与不使用责任链模式有什么区别和优势。


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