用Java 8 Lambda表达式实现设计模式:命令模式 - ImportNew



用Java 8 Lambda表达式实现设计模式:命令模式 - ImportNew

在这篇博客里,我将说明如何在使用Java 8 Lambda表达式的函数式编程方式实现命令设计模式。命令模式的目标是将请求封装成一个对象,从对客户端的不同类型请求,例如队列或日志请求参数化,并提供相应的操作。命令模式是一种通用编程方式,该方式基于运行时决策顺序来执行方法。模式的参与者如下:

  • 命令 声明用于执行操作的接口。
  • 实体命令 :定义接收者对象和动作的绑定。
  • 客户端 :创建实体命令实例并设置它的接收者。
  • 调用者:控制命令来执行请求。
  • 接收者 :实际完成工作。

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