HttpMessageDecoder (Spring Framework 5.2.12.RELEASE API)

类型参数:
T - the type of elements in the output stream
所有超级接口:
Decoder<T>
所有已知实现类:
AbstractJackson2Decoder, Jackson2CborDecoder, Jackson2JsonDecoder, Jackson2SmileDecoder
```
public interface HttpMessageDecoder<T>
extends Decoder<T>
```
Extension of Decoder exposing extra methods relevant in the context of HTTP request or response body decoding.
从以下版本开始:
5.0
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
`Map<String,Object>`	`getDecodeHints(ResolvableType actualType, ResolvableType elementType, ServerHttpRequest request, ServerHttpResponse response)`	Get decoding hints based on the server request or annotations on the target controller method parameter.

从接口继承的方法 org.springframework.core.codec.Decoder
canDecode, decode, decode, decodeToMono, getDecodableMimeTypes

- 方法详细资料
  - getDecodeHints
```
Map<String,Object> getDecodeHints(ResolvableType actualType,
                                        ResolvableType elementType,
                                        ServerHttpRequest request,
                                        ServerHttpResponse response)
```
    Get decoding hints based on the server request or annotations on the target controller method parameter.
    参数:
    actualType - the actual target type to decode to, possibly a reactive wrapper and sourced from MethodParameter, i.e. providing access to method parameter annotations
    elementType - the element type within Flux/Mono that we're trying to decode to
    request - the current request
    response - the current response
    返回:
    a Map with hints, possibly empty