Class RequestHeaderMapMethodArgumentResolver

java.lang.Object

org.springframework.web.method.annotation.RequestHeaderMapMethodArgumentResolver

All Implemented Interfaces:

HandlerMethodArgumentResolver

public class RequestHeaderMapMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver

Resolves Map, MultiValueMap and HttpHeaders method arguments annotated with @RequestHeader. For individual header values annotated with @RequestHeader see RequestHeaderMethodArgumentResolver instead.

The created Map contains all request header name/value pairs. The method parameter type may be a HttpHeaders or a MultiValueMap to receive all values for a header, not only the first one.

Since:

3.1

Author:

Arjen Poutsma, Rossen Stoyanchev

Constructor Summary

Constructors

Constructor	Description
RequestHeaderMapMethodArgumentResolver()

Method Summary

Modifier and Type	Method	Description
Object	resolveArgument(MethodParameter parameter, @Nullable ModelAndViewContainer mavContainer, NativeWebRequest webRequest, @Nullable WebDataBinderFactory binderFactory)	Resolves a method parameter into an argument value from a given request.
boolean	supportsParameter(MethodParameter parameter)	Whether the given method parameter is supported by this resolver.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RequestHeaderMapMethodArgumentResolver

public RequestHeaderMapMethodArgumentResolver()

Method Details

supportsParameter

public boolean supportsParameter(MethodParameter parameter)

Description copied from interface: HandlerMethodArgumentResolver

Whether the given method parameter is supported by this resolver.

Specified by:

supportsParameter in interface HandlerMethodArgumentResolver

Parameters:

parameter - the method parameter to check

Returns:

true if this resolver supports the supplied parameter; false otherwise

resolveArgument

public Object resolveArgument(MethodParameter parameter,
 @Nullable ModelAndViewContainer mavContainer,
 NativeWebRequest webRequest,
 @Nullable WebDataBinderFactory binderFactory)
                       throws Exception

Description copied from interface: HandlerMethodArgumentResolver

Resolves a method parameter into an argument value from a given request. A ModelAndViewContainer provides access to the model for the request. A WebDataBinderFactory provides a way to create a WebDataBinder instance when needed for data binding and type conversion purposes.

Specified by:

resolveArgument in interface HandlerMethodArgumentResolver

Parameters:

parameter - the method parameter to resolve. This parameter must have previously been passed to HandlerMethodArgumentResolver.supportsParameter(MethodParameter) which must have returned true.

mavContainer - the ModelAndViewContainer for the current request

webRequest - the current request

binderFactory - a factory for creating WebDataBinder instances

Returns:

the resolved argument value, or null if not resolvable

Throws:

Exception - in case of errors with the preparation of argument values