Spring MVC 请求流程

3：HandlerExecutionChain mappedHandler = getHandler(processedRequest);

1：request

2：HttpServletRequest processedRequest = checkMultipart(request);

1、异常处理2、ViewResolver解析视图View3、视图渲染数据font color=\"#ff0000\

for (HandlerMapping hm : this.handlerMappings) {   HandlerExecutionChain handler = hm.getHandler(request);   if (handler != null) {        return handler;   }}

font color=\"#f44336\

8：response

Method【GET ||  HEAD】检查缓存是否生效：返回304

4：HandlerAdapter ha = getHandlerAdapter(mappedHandler.getHandler());

前端控制器DispatcherServlet

  for (HandlerAdapter ha : this.handlerAdapters) {      if (ha.supports(handler)) {           return ha;      }  }