Spring EnableWebMvc vs WebMvcConfigurationSupport

EnableWebMvc vs WebMvcConfigurationSupport

• spring doc解釋

  • 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註解會覆蓋自定義的WebMvcConfigurationSupport配置
• 兩者的共同點
  • 都是爲了配置MVC
• 兩者的區別
  • @EnableWebMvc註解的實現是基於WebMvcConfigurationSupport，詳見@EnableWebMvc的doc
  • 三種應用形式只能選其一，若是自定義的WebMvcConfigurationSupport與@EnableWebMvc共同存在，則自定義的WebMvcConfigurationSupport配置會被覆蓋
    • 自定義(高級模式): 繼承WebMvcConfigurationSupport
    • 自定義(極簡模式): @EnableWebMvc註解+實現WebMvcConfigurer接口
    • 默認模式: 使用@EnableWebMvc註解