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

All Implemented Interfaces:
HandlerMethodArgumentResolver, HandlerMethodReturnValueHandler
```
public class RequestResponseBodyMethodProcessor
extends AbstractMessageConverterMethodProcessor
```
Resolves method arguments annotated with @RequestBody and handles return values from methods annotated with @ResponseBody by reading and writing to the body of the request or response with an HttpMessageConverter.
An @RequestBody method argument is also validated if it is annotated with @javax.validation.Valid. In case of validation failure, MethodArgumentNotValidException is raised and results in an HTTP 400 response status code if DefaultHandlerExceptionResolver is configured.
Since:
3.1
Author:
Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller

Field Summary
- Fields inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
  allSupportedMediaTypes, logger, messageConverters

Constructor Summary

Constructors
Constructor	Description
`RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters)`	Basic constructor with converters only.
`RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters, List<Object> requestResponseBodyAdvice)`	Complete constructor for resolving `@RequestBody` method arguments.
`RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters, ContentNegotiationManager manager)`	Basic constructor with converters and `ContentNegotiationManager`.
`RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters, ContentNegotiationManager manager, List<Object> requestResponseBodyAdvice)`	Complete constructor for resolving `@RequestBody` and handling `@ResponseBody`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected boolean`	`checkRequired(MethodParameter parameter)`
`void`	`handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest)`	Handle the given return value by adding attributes to the model and setting a view or setting the `ModelAndViewContainer.setRequestHandled(boolean)` flag to `true` to indicate the response has been handled directly.
`protected <T> Object`	`readWithMessageConverters(NativeWebRequest webRequest, MethodParameter parameter, Type paramType)`	Create the method argument value of the expected parameter type by reading from the given request.
`Object`	`resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory)`	Throws MethodArgumentNotValidException if validation fails.
`boolean`	`supportsParameter(MethodParameter parameter)`	Whether the given method parameter is supported by this resolver.
`boolean`	`supportsReturnType(MethodParameter returnType)`	Whether the given method return type is supported by this handler.

Methods inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor
createOutputMessage, getProducibleMediaTypes, getProducibleMediaTypes, getReturnValueType, isResourceType, writeWithMessageConverters, writeWithMessageConverters

Methods inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
adaptArgumentIfNecessary, createInputMessage, isBindExceptionRequired, readWithMessageConverters, validateIfApplicable

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RequestResponseBodyMethodProcessor
```
public RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters)
```
    Basic constructor with converters only. Suitable for resolving @RequestBody. For handling @ResponseBody consider also providing a ContentNegotiationManager.
  - RequestResponseBodyMethodProcessor
```
public RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters,
                                          @Nullable
                                          ContentNegotiationManager manager)
```
    Basic constructor with converters and ContentNegotiationManager. Suitable for resolving @RequestBody and handling @ResponseBody without Request~ or ResponseBodyAdvice.
  - RequestResponseBodyMethodProcessor
```
public RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters,
                                          @Nullable
                                          List<Object> requestResponseBodyAdvice)
```
    Complete constructor for resolving @RequestBody method arguments. For handling @ResponseBody consider also providing a ContentNegotiationManager.
    Since:
    4.2
  - RequestResponseBodyMethodProcessor
```
public RequestResponseBodyMethodProcessor(List<HttpMessageConverter<?>> converters,
                                          @Nullable
                                          ContentNegotiationManager manager,
                                          @Nullable
                                          List<Object> requestResponseBodyAdvice)
```
    Complete constructor for resolving @RequestBody and handling @ResponseBody.
- Method Detail
  - supportsParameter
```
public boolean supportsParameter(MethodParameter parameter)
```
    Description copied from interface: HandlerMethodArgumentResolver
    Whether the given method parameter is supported by this resolver.
    Parameters:
    parameter - the method parameter to check
    Returns:
    true if this resolver supports the supplied parameter; false otherwise
  - supportsReturnType
```
public boolean supportsReturnType(MethodParameter returnType)
```
    Description copied from interface: HandlerMethodReturnValueHandler
    Whether the given method return type is supported by this handler.
    Parameters:
    returnType - the method return type to check
    Returns:
    true if this handler supports the supplied return type; false otherwise
  - resolveArgument
```
public Object resolveArgument(MethodParameter parameter,
                              @Nullable
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest,
                              @Nullable
                              WebDataBinderFactory binderFactory)
                       throws Exception
```
    Throws MethodArgumentNotValidException if validation fails.
    Parameters:
    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.
    mavContainer - the ModelAndViewContainer for the current request
    webRequest - the current request
    binderFactory - a factory for creating WebDataBinder instances
    Returns:
    the resolved argument value, or null if not resolvable
    Throws:
    HttpMessageNotReadableException - if RequestBody.required() is true and there is no body content or if there is no suitable converter to read the content with.
    Exception - in case of errors with the preparation of argument values
  - readWithMessageConverters
```
protected <T> Object readWithMessageConverters(NativeWebRequest webRequest,
                                               MethodParameter parameter,
                                               Type paramType)
                                        throws IOException,
                                               HttpMediaTypeNotSupportedException,
                                               HttpMessageNotReadableException
```
    Description copied from class: AbstractMessageConverterMethodArgumentResolver
    Create the method argument value of the expected parameter type by reading from the given request.
    Overrides:
    readWithMessageConverters in class AbstractMessageConverterMethodArgumentResolver
    Type Parameters:
    T - the expected type of the argument value to be created
    Parameters:
    webRequest - the current request
    parameter - the method parameter descriptor (may be null)
    paramType - the type of the argument value to be created
    Returns:
    the created method argument value
    Throws:
    IOException - if the reading from the request fails
    HttpMediaTypeNotSupportedException - if no suitable message converter is found
    HttpMessageNotReadableException
  - checkRequired
```
protected boolean checkRequired(MethodParameter parameter)
```
  - handleReturnValue
```
public void handleReturnValue(@Nullable
                              Object returnValue,
                              MethodParameter returnType,
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest)
                       throws IOException,
                              HttpMediaTypeNotAcceptableException,
                              HttpMessageNotWritableException
```
    Description copied from interface: HandlerMethodReturnValueHandler
    Handle the given return value by adding attributes to the model and setting a view or setting the ModelAndViewContainer.setRequestHandled(boolean) flag to true to indicate the response has been handled directly.
    Parameters:
    returnValue - the value returned from the handler method
    returnType - the type of the return value. This type must have previously been passed to HandlerMethodReturnValueHandler.supportsReturnType(org.springframework.core.MethodParameter) which must have returned true.
    mavContainer - the ModelAndViewContainer for the current request
    webRequest - the current request
    Throws:
    IOException
    HttpMediaTypeNotAcceptableException
    HttpMessageNotWritableException

Class RequestResponseBodyMethodProcessor

Field Summary

Fields inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

Constructor Summary

Method Summary

Methods inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor

Methods inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

Methods inherited from class java.lang.Object

Constructor Detail

RequestResponseBodyMethodProcessor

RequestResponseBodyMethodProcessor

RequestResponseBodyMethodProcessor

RequestResponseBodyMethodProcessor

Method Detail

supportsParameter

supportsReturnType

resolveArgument

readWithMessageConverters

checkRequired

handleReturnValue