DispatcherServlet 关系说明 DispatcherServlet 继承了FrameworkServlet; FrameworkServlet 继承了HttpServletBean并实现了ApplicationContextAware(设置上下文); HttpServletBean继承了HttpServletu(抽象类),并实现了获取环境变量的设置和获取接口; HttpServlet实现了为Java EE Servlet的标准 启动流程 当容器启动时,容器(tomcat、jetty、undertow),启动后会依次加载HttpServlet的实现类 Spring MVC中DispatcherServlet为实现类,并作...