@Target(value=PARAMETER) @Retention(value=RUNTIME) @Documented public @interface RequestBody
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.
RequestHeader, 
ResponseBody, 
RequestMappingHandlerAdapter, 
AnnotationMethodHandlerAdapter| Modifier and Type | Optional Element and Description | 
|---|---|
boolean | 
required
Whether body content is required. 
 |