HandlerMethodArgumentResolver (Spring Framework 5.2.12.RELEASE API)

所有已知实现类:
AbstractNamedValueMethodArgumentResolver, DestinationVariableMethodArgumentResolver, HandlerMethodArgumentResolverComposite, HeaderMethodArgumentResolver, HeadersMethodArgumentResolver, MessageMethodArgumentResolver, PayloadArgumentResolver, PayloadMethodArgumentResolver, PrincipalMethodArgumentResolver
```
public interface HandlerMethodArgumentResolver
```
Strategy interface for resolving method parameters into argument values in the context of a given Message.
从以下版本开始:
4.0
作者:
Rossen Stoyanchev

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`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.

- 方法详细资料
  - supportsParameter
```
boolean supportsParameter(MethodParameter parameter)
```
    Whether the given method parameter is supported by this resolver.
    参数:
    parameter - the method parameter to check
    返回:
    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.
    参数:
    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
    返回:
    the resolved argument value, or null
    抛出:
    Exception - in case of errors with the preparation of argument values