Spring Boot provides auto-configuration for Spring MVC that works well with most applications.
（Spring Boot为Spring MVC提供了自动配置功能，对大多数应用程序都很适用。）

The auto-configuration adds the following features on top of Spring’s defaults:
（自动配置在Spring的默认基础上增加了以下功能）

  • Inclusion of ContentNegotiatingViewResolver and BeanNameViewResolver beans.

（内容协商视图解析器和BeanName视图解析器）

  • Support for serving static resources, including support for WebJars.

（静态资源，包括webjars，只需要放到默认的位置，就能使用了。）

  • Automatic registration of Converter,GenericConverter, and Formatterbeans.

（自动注册转换器、格式化器）

  • Support for HttpMessageConverters.

（支持 HttpMessageConverters ，用来配合内容协商理解原理）

  • Automatic registration of MessageCodesResolver.

（自动配置 MessageCodesResolver ，国际化用的）

  • Static index.html support.

（静态 index.html 支持）

  • Automatic use of a ConfigurableWebBindingInitializer bean.

（自动使用 ConfigurableWebBindingInitializer ，数据绑定器）

If you want to keep those Spring Boot MVC customizations and make moreMVC customizations(interceptors, formatters, view controllers, and other features), you can add your own@Configurationclass of typeWebMvcConfigurerbutwithout@EnableWebMvc.
（不要用 @EnableWebMvc 注解，使用 @Configuration + webMvcConfigurer 自定义规则）

If you want to provide custom instances ofRequestMappingHandlerMapping,RequestMappingHandlerAdapter, orExceptionHandlerExceptionResolver, and still keep the Spring Boot MVC customizations, you can declare a bean of typeWebMvcRegistrationsand use it to provide custom instances of those components.
（声明 WbMvcRegistrations 改变默认底层组件）

If you want to take complete control of Spring MVC, you can add your own@Configurationannotated with@EnableWebMvc, or alternatively add your own@Configuration-annotatedDelegatingWebMvcConfigurationas described in the Javadoc of@EnableWebMvc.
（使用 @ @EnableWebMvc + @Configuration + @DelegurationWebConfiguration 全面接管 Spring MVC）

官方文档位置

https://docs.spring.io/spring-boot/docs/current/reference/html/spring-boot-features.html#boot-features-spring-mvc-auto-configuration

image.png