org.springframework.web.bind.annotation

## Annotation Type RequestBody

-     @Target(value=PARAMETER)
      @Retention(value=RUNTIME)
      @Documented
      public @interface RequestBody

  Annotation indicating a method parameter should be bound to the body of the web request. The body of the request is passed through an `HttpMessageConverter` to resolve the method argument depending on the content type of the request. Optionally, automatic validation can be applied by annotating the argument with `@Valid`.

  Supported for annotated handler methods in Servlet environments.

  Since:
    3.0
  Author:
    Arjen Poutsma
  See Also:
    `RequestHeader`, `ResponseBody`, `RequestMappingHandlerAdapter`, `AnnotationMethodHandlerAdapter`

- - ### Optional Element Summary

    Optional Elements
    Modifier and Type | Optional Element and Description
    --- | ---
    `boolean` | `required` Whether body content is required.

- - ### Element Detail

    - #### required

          public abstract boolean required

      Whether body content is required.

      Default is `true`, leading to an exception thrown in case there is no body content. Switch this to `false` if you prefer `null to be passed when the body content is `null`.`

      Default:
        true