Interface HandlerMethodArgumentResolver
- All Known Implementing Classes:
AbstractNamedValueMethodArgumentResolver
,DestinationVariableMethodArgumentResolver
,HandlerMethodArgumentResolverComposite
,HeaderMethodArgumentResolver
,HeadersMethodArgumentResolver
,MessageMethodArgumentResolver
,PayloadArgumentResolver
,PrincipalMethodArgumentResolver
public interface HandlerMethodArgumentResolver
Strategy interface for resolving method parameters into argument values in the context of a givenMessage
.- Since:
- 4.0
- Author:
- Rossen Stoyanchev
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description Object
resolveArgument(MethodParameter parameter, Message<?> message)
Resolves a method parameter into an argument value from a given message.boolean
supportsParameter(MethodParameter parameter)
Whether the given method parameter is supported by this resolver.
Method Detail
supportsParameter
boolean supportsParameter(MethodParameter parameter)
Whether the given method parameter is supported by this resolver.- Parameters:
parameter
- the method parameter to check- Returns:
true
if this resolver supports the supplied parameter;false
otherwise
resolveArgument
Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception
Resolves a method parameter into an argument value from a given message.- Parameters:
parameter
- the method parameter to resolve. This parameter must have previously been passed tosupportsParameter(org.springframework.core.MethodParameter)
which must have returnedtrue
.message
- the currently processed message- Returns:
- the resolved argument value, or
null
- Throws:
Exception
- in case of errors with the preparation of argument values