java.lang.Object
- org.springframework.messaging.handler.annotation.support.MessageMethodArgumentResolver

所有已实现的接口:
HandlerMethodArgumentResolver
```
public class MessageMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver
```
HandlerMethodArgumentResolver for Message method arguments. Validates that the generic type of the payload matches to the message value or otherwise applies MessageConverter to convert to the expected payload type.
从以下版本开始:
4.0
作者:
Rossen Stoyanchev, Stephane Nicoll, Juergen Hoeller

构造器概要

构造器
构造器	说明
`MessageMethodArgumentResolver()`	Create a default resolver instance without message conversion.
`MessageMethodArgumentResolver(MessageConverter converter)`	Create a resolver instance with the given `MessageConverter`.

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
`protected boolean`	`isEmptyPayload(Object payload)`	Check if the given `payload` is empty.
`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.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - MessageMethodArgumentResolver
```
public MessageMethodArgumentResolver()
```
    Create a default resolver instance without message conversion.
  - MessageMethodArgumentResolver
```
public MessageMethodArgumentResolver(MessageConverter converter)
```
    Create a resolver instance with the given MessageConverter.
    参数:
    converter - the MessageConverter to use (may be null)
    从以下版本开始:
    4.3
- 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 to HandlerMethodArgumentResolver.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
  - isEmptyPayload
```
protected boolean isEmptyPayload(Object payload)
```
    Check if the given payload is empty.
    参数:
    payload - the payload to check (can be null)

类 MessageMethodArgumentResolver

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

MessageMethodArgumentResolver

MessageMethodArgumentResolver

方法详细资料

supportsParameter

resolveArgument

isEmptyPayload