Annotation which indicates that a method parameter should be bound
to a web request parameter. Supported for
RequestMapping annotated handler methods in Servlet and Portlet environments.
author: Arjen Poutsma author: Juergen Hoeller since: 2.5 See Also:RequestMapping See Also: org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter See Also: org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter
Default is true, leading to an exception thrown in case
of the parameter missing in the request. Switch this to false
if you prefer a null in case of the parameter missing.