RequestBody (Spring Framework 5.2.12.RELEASE API)

```
@Target(PARAMETER)
@Retention(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.
Since:
3.0
Author:
Arjen Poutsma
See Also:
RequestHeader, ResponseBody, RequestMappingHandlerAdapter

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

- Element Detail
  - required
```
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.
    Since:
    3.2
    Default:
    true