Spring EnableWebMvc vs WebMvcConfigurationSupport

EnableWebMvc vs WebMvcConfigurationSupport

• spring doc解释

  • WebMvcConfigurationSupport: This is the main class providing the configuration behind the MVC Java config. It is typically imported by adding @EnableWebMvc to an application @Configuration class

  • @EnableWebMvc

    • To customize the imported configuration, implement the interface WebMvcConfigurer and override individual methods
    • If WebMvcConfigurer does not expose some more advanced setting that needs to be configured consider removing the @EnableWebMvc annotation and extending directly from WebMvcConfigurationSupport or DelegatingWebMvcConfiguration
    • // 使用@EnableWebMvc注解会覆盖自定义的WebMvcConfigurationSupport配置

• 二者的共同点

  • 都是为了配置MVC

• 二者的区别

  • @EnableWebMvc注解的实现是基于WebMvcConfigurationSupport，详见@EnableWebMvc的doc
  • 三种应用形式只能选其一，如果自定义的WebMvcConfigurationSupport与@EnableWebMvc共同存在，则自定义的WebMvcConfigurationSupport配置会被覆盖
    • 自定义(高级模式): 继承WebMvcConfigurationSupport
    • 自定义(极简模式): @EnableWebMvc注解+实现WebMvcConfigurer接口
    • 默认模式: 使用@EnableWebMvc注解