@Target(value=PARAMETER)
@Retention(value=RUNTIME)
@Documented
public @interface RequestParam
RequestMapping
,
RequestHeader
,
CookieValue
,
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMethodAdapter
,
AnnotationMethodHandlerAdapter
Modifier and Type | Optional Element and Description |
---|---|
java.lang.String |
defaultValue
The default value to use as a fallback.
|
boolean |
required
Whether the parameter is required.
|
java.lang.String |
value
The name of the request parameter to bind to.
|
public abstract java.lang.String value
public abstract boolean required
Default is Alternatively, provide a 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.
defaultValue
,
which implicitly sets this flag to false
.
public abstract java.lang.String defaultValue
required()
to false.