spring mvc 类图

构造函数中引用了

getParent()

主要处理了请求，与初始化没有关系

ServletConfig

ServletRequest

ApplicationContest

1.provide configuration for an application2.readOnly when running but can be refreshed by subClass

HandlerMethod

+ operation1(params):returnType- operation2(params)- operation3()

GenericServlet（Abs）

1.hold a ServletConfig reference when init

tomcat

HttpServletBean(Abs)

WebApplicationContext

ConfigurableWebApplicationContext

FrameworkServlet(Abs)

4.implement the father's 【initServletBean】1.integrate with a Spring Application Context2. invoked after bean Properties setted3. Create the servlet WebApplicationContext5.leave a empty 【initFrameworkServlet】to be overrided

AbstractApplicationContext

onfresh和initStrategy中引用了

DispatchServlet

ApplicationContext

provide configuration for an application.

Servlet

初始化各个功能的实现类。比如异常处理、视图处理、请求映射处理等。

initWebApplicationContext()

DispatcherServlet

1.load the default property in static statement 2.have an 【 initStrategies】in its 【onRefresh】method

spring

HttpServlet(Abs)

1.override the service method，2.implement based http request method3.have no contact with 【init】

ConfigurableApplicationContext

1.Configuration and lifecycle methods are encapsulated here。2.the method （refresh）

init（config）

将Servlet与Spring容器上下文关联

主要做一些初始化的工作，将web.xml中配置的参数设置到Servlet中。比如servlet标签的子标签init-param标签中配置的参数。

ServletResponse

ServletContext