java.lang.Object
- org.springframework.web.method.annotation.RequestParamMapMethodArgumentResolver

All Implemented Interfaces:
HandlerMethodArgumentResolver
```
public class RequestParamMapMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver
```
Resolves Map method arguments annotated with an @RequestParam where the annotation does not specify a request parameter name.
The created Map contains all request parameter name/value pairs, or all multipart files for a given parameter name if specifically declared with MultipartFile as the value type. If the method parameter type is MultiValueMap instead, the created map contains all request parameters and all their values for cases where request parameters have multiple values (or multiple multipart files of the same name).
Since:
3.1
Author:
Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller
See Also:
RequestParamMethodArgumentResolver, ServletRequest.getParameterMap(), MultipartRequest.getMultiFileMap(), MultipartRequest.getFileMap()

Constructor Summary
Constructors
Constructor Description
RequestParamMapMethodArgumentResolver()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, 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 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RequestParamMapMethodArgumentResolver
```
public RequestParamMapMethodArgumentResolver()
```
- Method Detail
  - 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(org.springframework.core.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

Class RequestParamMapMethodArgumentResolver

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RequestParamMapMethodArgumentResolver

Method Detail

supportsParameter

resolveArgument