类 HeadersMethodArgumentResolver
- java.lang.Object
- org.springframework.messaging.handler.annotation.support.HeadersMethodArgumentResolver
- 所有已实现的接口:
HandlerMethodArgumentResolver
public class HeadersMethodArgumentResolver extends Object implements HandlerMethodArgumentResolver
Resolves the following method parameters:- Parameters assignable to
Map
annotated with@Headers
- Parameters of type
MessageHeaders
- Parameters assignable to
MessageHeaderAccessor
- 从以下版本开始:
- 4.0
- 作者:
- Rossen Stoyanchev
构造器概要
构造器 构造器 说明 HeadersMethodArgumentResolver()
方法概要
所有方法 实例方法 具体方法 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.
构造器详细资料
HeadersMethodArgumentResolver
public HeadersMethodArgumentResolver()
方法详细资料
supportsParameter
public boolean supportsParameter(MethodParameter parameter)
从接口复制的说明:HandlerMethodArgumentResolver
Whether the given method parameter is supported by this resolver.- 指定者:
supportsParameter
在接口中HandlerMethodArgumentResolver
- 参数:
parameter
- the method parameter to check- 返回:
true
if this resolver supports the supplied parameter;false
otherwise
resolveArgument
public Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception
从接口复制的说明:HandlerMethodArgumentResolver
Resolves a method parameter into an argument value from a given message.- 指定者:
resolveArgument
在接口中HandlerMethodArgumentResolver
- 参数:
parameter
- the method parameter to resolve. This parameter must have previously been passed toHandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter)
which must have returnedtrue
.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