Package org.springframework.messaging.handler.invocation

Interface HandlerMethodArgumentResolver

All Known Implementing Classes:
AbstractNamedValueMethodArgumentResolver, DestinationVariableMethodArgumentResolver, HandlerMethodArgumentResolverComposite, HeaderMethodArgumentResolver, HeadersMethodArgumentResolver, MessageMethodArgumentResolver, PayloadMethodArgumentResolver, PrincipalMethodArgumentResolver
public interface HandlerMethodArgumentResolver
Strategy interface for resolving method parameters into argument values in the context of a given Message.
Since:
4.0
Author:
Rossen Stoyanchev

  • Method Details

    • 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

      @Nullable 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 to supportsParameter(org.springframework.core.MethodParameter) which must have returned true.
      message - the currently processed message
      Returns:
      the resolved argument value, or null
      Throws:
      Exception - in case of errors with the preparation of argument values