java.lang.Object
- org.springframework.http.codec.DecoderHttpMessageReader<T>

类型参数:
T - the type of objects in the decoded output stream
所有已实现的接口:
HttpMessageReader<T>
直接已知子类:
ResourceHttpMessageReader
```
public class DecoderHttpMessageReader<T>
extends Object
implements HttpMessageReader<T>
```
HttpMessageReader that wraps and delegates to a Decoder.
Also a HttpMessageReader that pre-resolves decoding hints from the extra information available on the server side such as the request or controller method parameter annotations.
从以下版本开始:
5.0
作者:
Arjen Poutsma, Sebastien Deleuze, Rossen Stoyanchev

构造器概要
构造器
构造器说明
DecoderHttpMessageReader(Decoder<T> decoder)
Create an instance wrapping the given Decoder.

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
`boolean`	`canRead(ResolvableType elementType, MediaType mediaType)`	Whether the given object type is supported by this reader.
`protected MediaType`	`getContentType(HttpMessage inputMessage)`	Determine the Content-Type of the HTTP message based on the "Content-Type" header or otherwise default to `MediaType.APPLICATION_OCTET_STREAM`.
`Decoder<T>`	`getDecoder()`	Return the `Decoder` of this reader.
`List<MediaType>`	`getReadableMediaTypes()`	Return the `MediaType`'s that this reader supports.
`protected Map<String,Object>`	`getReadHints(ResolvableType actualType, ResolvableType elementType, ServerHttpRequest request, ServerHttpResponse response)`	Get additional hints for decoding for example based on the server request or annotations from controller method parameters.
`reactor.core.publisher.Flux<T>`	`read(ResolvableType actualType, ResolvableType elementType, ServerHttpRequest request, ServerHttpResponse response, Map<String,Object> hints)`	Server-side only alternative to `HttpMessageReader.read(ResolvableType, ReactiveHttpInputMessage, Map)` with additional context available.
`reactor.core.publisher.Flux<T>`	`read(ResolvableType elementType, ReactiveHttpInputMessage message, Map<String,Object> hints)`	Read from the input message and encode to a stream of objects.
`reactor.core.publisher.Mono<T>`	`readMono(ResolvableType actualType, ResolvableType elementType, ServerHttpRequest request, ServerHttpResponse response, Map<String,Object> hints)`	Server-side only alternative to `HttpMessageReader.readMono(ResolvableType, ReactiveHttpInputMessage, Map)` with additional, context available.
`reactor.core.publisher.Mono<T>`	`readMono(ResolvableType elementType, ReactiveHttpInputMessage message, Map<String,Object> hints)`	Read from the input message and encode to a single object.

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
  - DecoderHttpMessageReader
```
public DecoderHttpMessageReader(Decoder<T> decoder)
```
    Create an instance wrapping the given Decoder.
- 方法详细资料
  - getDecoder
```
public Decoder<T> getDecoder()
```
    Return the Decoder of this reader.
  - getReadableMediaTypes
```
public List<MediaType> getReadableMediaTypes()
```
    从接口复制的说明: HttpMessageReader
    Return the MediaType's that this reader supports.
    指定者:
    getReadableMediaTypes 在接口中 HttpMessageReader<T>
  - canRead
```
public boolean canRead(ResolvableType elementType,
                       @Nullable
                       MediaType mediaType)
```
    从接口复制的说明: HttpMessageReader
    Whether the given object type is supported by this reader.
    指定者:
    canRead 在接口中 HttpMessageReader<T>
    参数:
    elementType - the type of object to check
    mediaType - the media type for the read (possibly null)
    返回:
    true if readable, false otherwise
  - read
```
public reactor.core.publisher.Flux<T> read(ResolvableType elementType,
                                           ReactiveHttpInputMessage message,
                                           Map<String,Object> hints)
```
    从接口复制的说明: HttpMessageReader
    Read from the input message and encode to a stream of objects.
    指定者:
    read 在接口中 HttpMessageReader<T>
    参数:
    elementType - the type of objects in the stream which must have been previously checked via HttpMessageReader.canRead(ResolvableType, MediaType)
    message - the message to read from
    hints - additional information about how to read and decode the input
    返回:
    the decoded stream of elements
  - readMono
```
public reactor.core.publisher.Mono<T> readMono(ResolvableType elementType,
                                               ReactiveHttpInputMessage message,
                                               Map<String,Object> hints)
```
    从接口复制的说明: HttpMessageReader
    Read from the input message and encode to a single object.
    指定者:
    readMono 在接口中 HttpMessageReader<T>
    参数:
    elementType - the type of objects in the stream which must have been previously checked via HttpMessageReader.canRead(ResolvableType, MediaType)
    message - the message to read from
    hints - additional information about how to read and decode the input
    返回:
    the decoded object
  - getContentType
```
@Nullable
protected MediaType getContentType(HttpMessage inputMessage)
```
    Determine the Content-Type of the HTTP message based on the "Content-Type" header or otherwise default to MediaType.APPLICATION_OCTET_STREAM.
    参数:
    inputMessage - the HTTP message
    返回:
    the MediaType, possibly null.
  - read
```
public reactor.core.publisher.Flux<T> read(ResolvableType actualType,
                                           ResolvableType elementType,
                                           ServerHttpRequest request,
                                           ServerHttpResponse response,
                                           Map<String,Object> hints)
```
    从接口复制的说明: HttpMessageReader
    Server-side only alternative to HttpMessageReader.read(ResolvableType, ReactiveHttpInputMessage, Map) with additional context available.
    指定者:
    read 在接口中 HttpMessageReader<T>
    参数:
    actualType - the actual type of the target method parameter; for annotated controllers, the MethodParameter can be accessed via ResolvableType.getSource().
    elementType - the type of Objects in the output stream
    request - the current request
    response - the current response
    hints - additional information about how to read the body
    返回:
    the decoded stream of elements
  - readMono
```
public reactor.core.publisher.Mono<T> readMono(ResolvableType actualType,
                                               ResolvableType elementType,
                                               ServerHttpRequest request,
                                               ServerHttpResponse response,
                                               Map<String,Object> hints)
```
    从接口复制的说明: HttpMessageReader
    Server-side only alternative to HttpMessageReader.readMono(ResolvableType, ReactiveHttpInputMessage, Map) with additional, context available.
    指定者:
    readMono 在接口中 HttpMessageReader<T>
    参数:
    actualType - the actual type of the target method parameter; for annotated controllers, the MethodParameter can be accessed via ResolvableType.getSource().
    elementType - the type of Objects in the output stream
    request - the current request
    response - the current response
    hints - additional information about how to read the body
    返回:
    the decoded stream of elements
  - getReadHints
```
protected Map<String,Object> getReadHints(ResolvableType actualType,
                                                ResolvableType elementType,
                                                ServerHttpRequest request,
                                                ServerHttpResponse response)
```
    Get additional hints for decoding for example based on the server request or annotations from controller method parameters. By default, delegate to the decoder if it is an instance of HttpMessageDecoder.

类 DecoderHttpMessageReader<T>

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

DecoderHttpMessageReader

方法详细资料

getDecoder

getReadableMediaTypes

canRead

read

readMono

getContentType

read

readMono

getReadHints