cheat sheet

集成到 DispatchServlet

SpringBoot
- ——> DelegatingWebMvcConfiguration ——> WebMvcConfigurationSupportWebMvcConfigurer + @EnableWebMVC
HandlerMapping
- SimpleUrlHandlerMapping
- BeanNameUrlHandlerMapping
- org.springframework.boot.actuate.endpoint.web.servlet.WebMvcEndpointHandlerMapping 学会怎么定制某个 path 的 mapping
- 继承 RequestMappingInfoHandlerMapping (方法层面 Mapping)
HandlderAdapter
- SimpleControllerHandlerAdapter
- SimpleRequestHandlerAdapter
- SimpleServletHandlerAdapter
- RequestMappingHandlerAdapter
- AbstractHandlerMethodAdapter
HandlerExceptionResolver
- DefaultErrorAttributes, 设置错误信息至 Request
- HandlerExceptionResolverComposite, 代理聚合工具类，具体处理逻辑委托给 List<HandlerExceptionResolver>
- ExceptionHandlerExceptionResolver, 支持 @ExceptionHandler
- ResponseStatusExceptionResolver, 支持 @ResponseStatus
- DefaultHandlerExceptionResolver, 返回错误页面，设置 500 之类

集成 HandlerMapping

集成 HandlderAdapter

HandlerMethodArgumentResolver
HandlerMethodReturnValueHandler
ModelAndViewResolver
HttpMessageConverter
@RequsetParam, @RequestPart, @PathVariable, @MatrixVariable, @RequestHeader, @Cookie
@ModelAttribute 自解析 Request 到某个数据对象，支持在 RequestMapping Method 中使用
@InitBinder, 绑定解析 ResMapping 特性参数，如果 String 到枚举，String 到日期等
@ResponseBody

应用注册 Servlet