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

    java.lang.Object
      org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter

All Implemented Interfaces:
  WebMvcConfigurer

    public abstract class WebMvcConfigurerAdapter

extends Object
implements WebMvcConfigurer

An convenient base class with empty method implementations of `WebMvcConfigurer`.

Since:
  3.1
Author:
  Rossen Stoyanchev

Constructor Summary
`WebMvcConfigurerAdapter()`

Method Summary
`void` | `addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers)` Add resolvers to support custom controller method argument types.
`void` | `addFormatters(FormatterRegistry registry)` Add `Converter`s and `Formatter`s in addition to the ones registered by default.
`void` | `addInterceptors(InterceptorRegistry registry)` Add Spring MVC lifecycle interceptors for pre- and post-processing of controller method invocations.
`void` | `addResourceHandlers(ResourceHandlerRegistry registry)` Add handlers to serve static resources such as images, js, and, css files from specific locations under web application root, the classpath, and others.
`void` | `addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers)` Add handlers to support custom controller method return value types.
`void` | `addViewControllers(ViewControllerRegistry registry)` Add view controllers to create a direct mapping between a URL path and view name without the need for a controller in between.
`void` | `configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)` Configure a handler to delegate unhandled requests by forwarding to the Servlet container's "default" servlet.
`void` | `configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers)` Configure the `HandlerExceptionResolver`s to handle unresolved controller exceptions.
`void` | `configureMessageConverters(List<HttpMessageConverter<?>> converters)` Configure the `HttpMessageConverter`s to use in argument resolvers and return value handlers that support reading and/or writing to the body of the request and response.
`Validator` | `getValidator()` Provide a custom `Validator` instead of the one created by default.

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

Constructor Detail

### WebMvcConfigurerAdapter

    public WebMvcConfigurerAdapter()

Method Detail

### addFormatters

    public void addFormatters(FormatterRegistry registry)

  Add `Converter`s and `Formatter`s in addition to the ones registered by default.

  This implementation is empty.

  Specified by:
    `addFormatters` in interface `WebMvcConfigurer`

### configureMessageConverters

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

  Configure the `HttpMessageConverter`s to use in argument resolvers and return value handlers that support reading and/or writing to the body of the request and response. If no message converters are added to the list, default converters are added instead.

  This implementation is empty.

  Specified by:
    `configureMessageConverters` in interface `WebMvcConfigurer`
  Parameters:
    `converters` - initially an empty list of converters

### getValidator

    public Validator getValidator()

  Provide a custom `Validator` instead of the one created by default. The default implementation, assuming JSR-303 is on the classpath, is: `LocalValidatorFactoryBean`. Leave the return value as `null` to keep the default.

  This implementation returns `null`

  Specified by:
    `getValidator` in interface `WebMvcConfigurer`

### addArgumentResolvers

    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers)

  Add resolvers to support custom controller method argument types.

  This does not override the built-in support for resolving handler method arguments. To customize the built-in support for argument resolution, configure `RequestMappingHandlerAdapter` directly.

  This implementation is empty.

  Specified by:
    `addArgumentResolvers` in interface `WebMvcConfigurer`
  Parameters:
    `argumentResolvers` - initially an empty list

### addReturnValueHandlers

    public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers)

  Add handlers to support custom controller method return value types.

  Using this option does not override the built-in support for handling return values. To customize the built-in support for handling return values, configure RequestMappingHandlerAdapter directly.

  This implementation is empty.

  Specified by:
    `addReturnValueHandlers` in interface `WebMvcConfigurer`
  Parameters:
    `returnValueHandlers` - initially an empty list

### configureHandlerExceptionResolvers

    public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers)

  Configure the `HandlerExceptionResolver`s to handle unresolved controller exceptions. If no resolvers are added to the list, default exception resolvers are added instead.

  This implementation is empty.

  Specified by:
    `configureHandlerExceptionResolvers` in interface `WebMvcConfigurer`
  Parameters:
    `exceptionResolvers` - initially an empty list

### addInterceptors

    public void addInterceptors(InterceptorRegistry registry)

  Add Spring MVC lifecycle interceptors for pre- and post-processing of controller method invocations. Interceptors can be registered to apply to all requests or be limited to a subset of URL patterns.

  This implementation is empty.

  Specified by:
    `addInterceptors` in interface `WebMvcConfigurer`

### addViewControllers

    public void addViewControllers(ViewControllerRegistry registry)

  Add view controllers to create a direct mapping between a URL path and view name without the need for a controller in between.

  This implementation is empty.

  Specified by:
    `addViewControllers` in interface `WebMvcConfigurer`

### addResourceHandlers

    public void addResourceHandlers(ResourceHandlerRegistry registry)

  Add handlers to serve static resources such as images, js, and, css files from specific locations under web application root, the classpath, and others.

  This implementation is empty.

  Specified by:
    `addResourceHandlers` in interface `WebMvcConfigurer`

### configureDefaultServletHandling

    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)

  Configure a handler to delegate unhandled requests by forwarding to the Servlet container's "default" servlet. A common use case for this is when the `DispatcherServlet` is mapped to "/" thus overriding the Servlet container's default handling of static resources.

  This implementation is empty.

  Specified by:
    `configureDefaultServletHandling` in interface `WebMvcConfigurer`

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