public class MatrixVariableMapMethodArgumentResolver extends Object implements HandlerMethodArgumentResolver
Map
annotated with @MatrixVariable
where the annotation does not specify a name. In other words the purpose of this resolver
is to provide access to multiple matrix variables, either all or associated with a specific
path variable.
When a name is specified, an argument of type Map is considered to be a single attribute
with a Map value, and is resolved by MatrixVariableMethodArgumentResolver
instead.
Constructor and Description |
---|
MatrixVariableMapMethodArgumentResolver() |
Modifier and Type | Method and Description |
---|---|
Object |
resolveArgument(MethodParameter parameter,
ModelAndViewContainer mavContainer,
NativeWebRequest request,
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.
|
public MatrixVariableMapMethodArgumentResolver()
public boolean supportsParameter(MethodParameter parameter)
HandlerMethodArgumentResolver
supportsParameter
in interface HandlerMethodArgumentResolver
parameter
- the method parameter to checktrue
if this resolver supports the supplied parameter;
false
otherwise@Nullable public Object resolveArgument(MethodParameter parameter, @Nullable ModelAndViewContainer mavContainer, NativeWebRequest request, @Nullable WebDataBinderFactory binderFactory) throws Exception
HandlerMethodArgumentResolver
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.resolveArgument
in interface HandlerMethodArgumentResolver
parameter
- the method parameter to resolve. This parameter must
have previously been passed to HandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter)
which must
have returned true
.mavContainer
- the ModelAndViewContainer for the current requestrequest
- the current requestbinderFactory
- a factory for creating WebDataBinder
instancesnull
if not resolvableException
- in case of errors with the preparation of argument values