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## org.springframework.web.servlet.config.annotation
Class DelegatingWebMvcConfiguration

    java.lang.Object
      org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport
          org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration

All Implemented Interfaces:
  Aware, ApplicationContextAware, ServletContextAware

    @Configuration
    public class DelegatingWebMvcConfiguration

extends WebMvcConfigurationSupport

Extends `WebMvcConfigurationSupport` with the ability to detect beans of type `WebMvcConfigurer` and give them a chance to customize the provided configuration by delegating to them at the appropriate times.

Since:
  3.1
Author:
  Rossen Stoyanchev
See Also:
  `EnableWebMvc`

Constructor Summary
`DelegatingWebMvcConfiguration()`

Method Summary
`protected void` | `addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers)` Add custom `HandlerMethodArgumentResolver`s to use in addition to the ones registered by default.
`protected void` | `addFormatters(FormatterRegistry registry)` Override this method to add custom `Converter`s and `Formatter`s.
`protected void` | `addInterceptors(InterceptorRegistry registry)` Override this method to add Spring MVC interceptors for pre- and post-processing of controller invocation.
`protected void` | `addResourceHandlers(ResourceHandlerRegistry registry)` Override this method to add resource handlers for serving static resources.
`protected void` | `addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers)` Add custom `HandlerMethodReturnValueHandler`s in addition to the ones registered by default.
`protected void` | `addViewControllers(ViewControllerRegistry registry)` Override this method to add view controllers.
`protected void` | `configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)` Override this method to configure "default" Servlet handling.
`protected void` | `configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers)` Override this method to configure the list of `HandlerExceptionResolver`s to use.
`protected void` | `configureMessageConverters(List<HttpMessageConverter<?>> converters)` Override this method to add custom `HttpMessageConverter`s to use with the `RequestMappingHandlerAdapter` and the `ExceptionHandlerExceptionResolver`.
`protected Validator` | `getValidator()` Override this method to provide a custom `Validator`.
`void` | `setConfigurers(List<WebMvcConfigurer> configurers)`

Methods inherited from class org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport
`addDefaultHandlerExceptionResolvers, addDefaultHttpMessageConverters, beanNameHandlerMapping, defaultServletHandlerMapping, getInterceptors, getMessageConverters, handlerExceptionResolver, httpRequestHandlerAdapter, mvcConversionService, mvcValidator, requestMappingHandlerAdapter, requestMappingHandlerMapping, resourceHandlerMapping, setApplicationContext, setServletContext, simpleControllerHandlerAdapter, viewControllerHandlerMapping`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DelegatingWebMvcConfiguration

    public DelegatingWebMvcConfiguration()

Method Detail

### setConfigurers

    @Autowired(required=false)
    public void setConfigurers(List<WebMvcConfigurer> configurers)

### addInterceptors

    protected void addInterceptors(InterceptorRegistry registry)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to add Spring MVC interceptors for pre- and post-processing of controller invocation.

  Overrides:
    `addInterceptors` in class `WebMvcConfigurationSupport`
  See Also:
    `InterceptorRegistry`

### addViewControllers

    protected void addViewControllers(ViewControllerRegistry registry)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to add view controllers.

  Overrides:
    `addViewControllers` in class `WebMvcConfigurationSupport`
  See Also:
    `ViewControllerRegistry`

### addResourceHandlers

    protected void addResourceHandlers(ResourceHandlerRegistry registry)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to add resource handlers for serving static resources.

  Overrides:
    `addResourceHandlers` in class `WebMvcConfigurationSupport`
  See Also:
    `ResourceHandlerRegistry`

### configureDefaultServletHandling

    protected void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to configure "default" Servlet handling.

  Overrides:
    `configureDefaultServletHandling` in class `WebMvcConfigurationSupport`
  See Also:
    `DefaultServletHandlerConfigurer`

### addArgumentResolvers

    protected void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers)

  Description copied from class: `WebMvcConfigurationSupport`
  Add custom `HandlerMethodArgumentResolver`s to use in addition to the ones registered by default.

  Custom argument resolvers are invoked before built-in resolvers except for those that rely on the presence of annotations (e.g. `@RequestParameter`, `@PathVariable`, etc.). The latter can be customized by configuring the `RequestMappingHandlerAdapter` directly.

  Overrides:
    `addArgumentResolvers` in class `WebMvcConfigurationSupport`
  Parameters:
    `argumentResolvers` - the list of custom converters; initially an empty list.

### addReturnValueHandlers

    protected void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers)

  Description copied from class: `WebMvcConfigurationSupport`
  Add custom `HandlerMethodReturnValueHandler`s in addition to the ones registered by default.

  Custom return value handlers are invoked before built-in ones except for those that rely on the presence of annotations (e.g. `@ResponseBody`, `@ModelAttribute`, etc.). The latter can be customized by configuring the `RequestMappingHandlerAdapter` directly.

  Overrides:
    `addReturnValueHandlers` in class `WebMvcConfigurationSupport`
  Parameters:
    `returnValueHandlers` - the list of custom handlers; initially an empty list.

### configureMessageConverters

    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to add custom `HttpMessageConverter`s to use with the `RequestMappingHandlerAdapter` and the `ExceptionHandlerExceptionResolver`. Adding converters to the list turns off the default converters that would otherwise be registered by default. Also see `WebMvcConfigurationSupport.addDefaultHttpMessageConverters(List)` that can be used to add default message converters.

  Overrides:
    `configureMessageConverters` in class `WebMvcConfigurationSupport`
  Parameters:
    `converters` - a list to add message converters to; initially an empty list.

### addFormatters

    protected void addFormatters(FormatterRegistry registry)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to add custom `Converter`s and `Formatter`s.

  Overrides:
    `addFormatters` in class `WebMvcConfigurationSupport`

### getValidator

    protected Validator getValidator()

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to provide a custom `Validator`.

  Overrides:
    `getValidator` in class `WebMvcConfigurationSupport`

### configureHandlerExceptionResolvers

    protected void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers)

  Description copied from class: `WebMvcConfigurationSupport`
  Override this method to configure the list of `HandlerExceptionResolver`s to use. Adding resolvers to the list turns off the default resolvers that would otherwise be registered by default. Also see `WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(List)` that can be used to add the default exception resolvers.

  Overrides:
    `configureHandlerExceptionResolvers` in class `WebMvcConfigurationSupport`
  Parameters:
    `exceptionResolvers` - a list to add exception resolvers to; initially an empty list.

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