org.springframework.web.bind.annotation

Annotation Type RequestHeader

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

Annotation which indicates that a method parameter should be bound to a web request header.

Supported for annotated handler methods in Servlet and Portlet environments.

If the method parameter is Map<String, String>, MultiValueMap<String, String>, or HttpHeaders then the map is populated with all header names and values.

Since:

3.0

Author:

Juergen Hoeller, Sam Brannen

See Also:

RequestMapping, RequestParam, CookieValue, RequestMappingHandlerAdapter, AnnotationMethodHandlerAdapter

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String	defaultValue The default value to use as a fallback.
String	name The name of the request header to bind to.
boolean	required Whether the header is required.
String	value Alias for name().

Element Detail

value

@AliasFor(value="name")
public abstract String value

Alias for name().

Default:

""

name

@AliasFor(value="value")
public abstract String name

The name of the request header to bind to.

Since:

4.2

Default:

""

required

public abstract boolean required

Whether the header is required.

Defaults to true, leading to an exception being thrown if the header is missing in the request. Switch this to false if you prefer a null value if the header is not present in the request.

Alternatively, provide a defaultValue(), which implicitly sets this flag to false.

Default:

true

defaultValue

public abstract String defaultValue

The default value to use as a fallback.

Supplying a default value implicitly sets required() to false.

Default:

"\n\t\t\n\t\t\n\ue000\ue001\ue002\n\t\t\t\t\n"