工厂方法之IoC

SingletonControllerActivator

+ CreateControllerAsync(HttpContext httpContaxt)+ ReleaseAsync(Controller controller)

DefaultControllerExecutor

DefaultControllerActivator

+ CreateControllerAsync(HttpContext httpContext)+ ReleaseAsync(Controller controller)

DefaultWebListener

+ ListenAsync(Uri address)+ ReceiveAsync()

<<interface>>IWebListener

<<interface>>IControllerExecutor

MvcEngine

- listener:IWebListener = GetWebListener()- activator:IControllerActivator=GetControllerActivator()- executor:IControllerExecutor=GetControllerExecutor()- renderer:IViewRender=GetViewRenderer()

+ StartAsync(Uri address)# GetWebListener():IWebListener=>new DefaultWebListener()# GetControllerActivator():IControllerActivator=>new DefaultControllerActivator()# GetControllerExecutor():IControllerExecutor=>new DefaultControllerExecutor()# GetViewRenderer():IViewRender=>new DefaultViewRenderer()

DefaultViewRender

<<interface>>IViewRender

FoobarMvcEngine

# GetControllerActivator():IControllerActivator=>new SingletonControllerActivator()

优势显现，可以对默认框架中的任何步骤进行定制

控制反转，构建默认框架

<<interface>>IControllerActivator