HandlerMethodReturnValueHandler (Spring Framework 5.2.12.RELEASE API)

所有已知子接口:
AsyncHandlerMethodReturnValueHandler
所有已知实现类:
AbstractAsyncReturnValueHandler, CompletableFutureReturnValueHandler, HandlerMethodReturnValueHandlerComposite, ListenableFutureReturnValueHandler, ReactiveReturnValueHandler, SendToMethodReturnValueHandler, SubscriptionMethodReturnValueHandler
```
public interface HandlerMethodReturnValueHandler
```
Strategy interface to handle the value returned from the invocation of a method handling a 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
`void`	`handleReturnValue(Object returnValue, MethodParameter returnType, Message<?> message)`	Handle the given return value.
`boolean`	`supportsReturnType(MethodParameter returnType)`	Whether the given method return type is supported by this handler.

- 方法详细资料
  - supportsReturnType
```
boolean supportsReturnType(MethodParameter returnType)
```
    Whether the given method return type is supported by this handler.
    参数:
    returnType - the method return type to check
    返回:
    true if this handler supports the supplied return type; false otherwise
  - handleReturnValue
```
void handleReturnValue(@Nullable
                       Object returnValue,
                       MethodParameter returnType,
                       Message<?> message)
                throws Exception
```
    Handle the given return value.
    参数:
    returnValue - the value returned from the handler method
    returnType - the type of the return value. This type must have previously been passed to supportsReturnType(org.springframework.core.MethodParameter) and it must have returned true.
    message - the message that caused this method to be called
    抛出:
    Exception - if the return value handling results in an error