注解配置SpringMVC原理简述1. 准备知识1.1 两个应用上下文1.2 ServletContext配置方法(Configuration Methods)1.3 运行时插拔1.4 SpringServletContainerInitializer1.4.1 AbstractContextLoaderInitializer1.4.2 AbstractDispatcherServletInitializer1.4.3 AbstractAnnotationConfigDispatcherServ