spring mvc 文档哪里有

官方：

http://docs.spring.io/spring/docs/4.2.0.RC1/spring-framework-reference/htmlsingle/#spring-web

The Web - Web MVC framework - Introduction to Spring Web MVC framework 

关键字：DispatcherServlet

Clear separation of roles

every role (自行一一对应):

controller

validator

command object

form object

model object

DispatcherServlet

handler mapping

view resolver

and so on