java.lang.Object
- org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
- - org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor

所有已实现的接口:
HandlerMethodArgumentResolver, HandlerMethodReturnValueHandler
直接已知子类:
HttpEntityMethodProcessor, RequestResponseBodyMethodProcessor
```
public abstract class AbstractMessageConverterMethodProcessor
extends AbstractMessageConverterMethodArgumentResolver
implements HandlerMethodReturnValueHandler
```
Extends AbstractMessageConverterMethodArgumentResolver with the ability to handle method return values by writing to the response with HttpMessageConverters.
从以下版本开始:
3.1
作者:
Arjen Poutsma, Rossen Stoyanchev, Brian Clozel, Juergen Hoeller

字段概要
- 从类继承的字段 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
  allSupportedMediaTypes, logger, messageConverters

构造器概要

构造器
限定符	构造器	说明
`protected`	`AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters)`	Constructor with list of converters only.
`protected`	`AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters, ContentNegotiationManager contentNegotiationManager)`	Constructor with list of converters and ContentNegotiationManager.
`protected`	`AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters, ContentNegotiationManager manager, List<Object> requestResponseBodyAdvice)`	Constructor with list of converters and ContentNegotiationManager as well as request/response body advice instances.

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 ServletServerHttpResponse`	`createOutputMessage(NativeWebRequest webRequest)`	Creates a new `HttpOutputMessage` from the given `NativeWebRequest`.
`protected List<MediaType>`	`getProducibleMediaTypes(HttpServletRequest request, Class<?> valueClass)`	Returns the media types that can be produced.
`protected List<MediaType>`	`getProducibleMediaTypes(HttpServletRequest request, Class<?> valueClass, Type targetType)`	Returns the media types that can be produced.
`protected Class<?>`	`getReturnValueType(Object value, MethodParameter returnType)`	Return the type of the value to be written to the response.
`protected boolean`	`isResourceType(Object value, MethodParameter returnType)`	Return whether the returned value or the declared return type extends `Resource`.
`protected <T> void`	`writeWithMessageConverters(T value, MethodParameter returnType, ServletServerHttpRequest inputMessage, ServletServerHttpResponse outputMessage)`	Writes the given return type to the given output message.
`protected <T> void`	`writeWithMessageConverters(T value, MethodParameter returnType, NativeWebRequest webRequest)`	Writes the given return value to the given web request.

从类继承的方法 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
adaptArgumentIfNecessary, createInputMessage, isBindExceptionRequired, readWithMessageConverters, readWithMessageConverters, validateIfApplicable

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

从接口继承的方法 org.springframework.web.method.support.HandlerMethodArgumentResolver
resolveArgument, supportsParameter

从接口继承的方法 org.springframework.web.method.support.HandlerMethodReturnValueHandler
handleReturnValue, supportsReturnType

构造器详细资料

AbstractMessageConverterMethodProcessor

protected AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters)

Constructor with list of converters only.

AbstractMessageConverterMethodProcessor

protected AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters,
                                                  @Nullable
                                                  ContentNegotiationManager contentNegotiationManager)

Constructor with list of converters and ContentNegotiationManager.

AbstractMessageConverterMethodProcessor

protected AbstractMessageConverterMethodProcessor(List<HttpMessageConverter<?>> converters,
                                                  @Nullable
                                                  ContentNegotiationManager manager,
                                                  @Nullable
                                                  List<Object> requestResponseBodyAdvice)

Constructor with list of converters and ContentNegotiationManager as well as request/response body advice instances.

方法详细资料

createOutputMessage
```
protected ServletServerHttpResponse createOutputMessage(NativeWebRequest webRequest)
```
Creates a new HttpOutputMessage from the given NativeWebRequest.
参数:
webRequest - the web request to create an output message from
返回:
the output message

writeWithMessageConverters

protected <T> void writeWithMessageConverters(T value,
                                              MethodParameter returnType,
                                              NativeWebRequest webRequest)
                                       throws IOException,
                                              HttpMediaTypeNotAcceptableException,
                                              HttpMessageNotWritableException

Writes the given return value to the given web request. Delegates to writeWithMessageConverters(Object, MethodParameter, ServletServerHttpRequest, ServletServerHttpResponse)

抛出:: IOException; HttpMediaTypeNotAcceptableException; HttpMessageNotWritableException

writeWithMessageConverters

protected <T> void writeWithMessageConverters(@Nullable
                                              T value,
                                              MethodParameter returnType,
                                              ServletServerHttpRequest inputMessage,
                                              ServletServerHttpResponse outputMessage)
                                       throws IOException,
                                              HttpMediaTypeNotAcceptableException,
                                              HttpMessageNotWritableException

Writes the given return type to the given output message.

参数:: value - the value to write to the output message; returnType - the type of the value; inputMessage - the input messages. Used to inspect the Accept header.; outputMessage - the output message to write to
抛出:: IOException - thrown in case of I/O errors; HttpMediaTypeNotAcceptableException - thrown when the conditions indicated by the Accept header on the request cannot be met by the message converters; HttpMessageNotWritableException - thrown if a given message cannot be written by a converter, or if the content-type chosen by the server has no compatible converter.

getReturnValueType
```
protected Class<?> getReturnValueType(@Nullable
                                      Object value,
                                      MethodParameter returnType)
```
Return the type of the value to be written to the response. Typically this is a simple check via getClass on the value but if the value is null, then the return type needs to be examined possibly including generic type determination (e.g. ResponseEntity<T>).

isResourceType

protected boolean isResourceType(@Nullable
                                 Object value,
                                 MethodParameter returnType)

Return whether the returned value or the declared return type extends Resource.

getProducibleMediaTypes

protected List<MediaType> getProducibleMediaTypes(HttpServletRequest request,
                                                  Class<?> valueClass)

Returns the media types that can be produced.

另请参阅:: getProducibleMediaTypes(HttpServletRequest, Class, Type)

getProducibleMediaTypes

protected List<MediaType> getProducibleMediaTypes(HttpServletRequest request,
                                                  Class<?> valueClass,
                                                  @Nullable
                                                  Type targetType)

Returns the media types that can be produced. The resulting media types are:

The producible media types specified in the request mappings, or
Media types of configured converters that can write the specific return value, or
MediaType.ALL

从以下版本开始:: 4.2

类 AbstractMessageConverterMethodProcessor

字段概要

从类继承的字段 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

构造器概要

方法概要

从类继承的方法 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

从类继承的方法 java.lang.Object

从接口继承的方法 org.springframework.web.method.support.HandlerMethodArgumentResolver

从接口继承的方法 org.springframework.web.method.support.HandlerMethodReturnValueHandler

构造器详细资料

AbstractMessageConverterMethodProcessor

AbstractMessageConverterMethodProcessor

AbstractMessageConverterMethodProcessor

方法详细资料

createOutputMessage

writeWithMessageConverters

writeWithMessageConverters

getReturnValueType

isResourceType

getProducibleMediaTypes

getProducibleMediaTypes