Package org.springframework.web.servlet.mvc.method.annotation

Class RequestResponseBodyMethodProcessor

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:

org.springframework.web.method.support.HandlerMethodArgumentResolver, org.springframework.web.method.support.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 any annotations that trigger validation. 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

logger, messageConverters

Constructor Summary

Constructors

Constructor	Description
RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters)	Basic constructor with converters only.
RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters, List<Object> requestResponseBodyAdvice)	Complete constructor for resolving @RequestBody method arguments.
RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters, org.springframework.web.accept.ContentNegotiationManager manager)	Basic constructor with converters and ContentNegotiationManager.
RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters, org.springframework.web.accept.ContentNegotiationManager manager, List<Object> requestResponseBodyAdvice)	Complete constructor for resolving @RequestBody and handling @ResponseBody.

Method Summary

Modifier and Type	Method	Description
protected boolean	checkRequired(org.springframework.core.MethodParameter parameter)
void	handleReturnValue(Object returnValue, org.springframework.core.MethodParameter returnType, org.springframework.web.method.support.ModelAndViewContainer mavContainer, org.springframework.web.context.request.NativeWebRequest webRequest)
protected <T> Object	readWithMessageConverters(org.springframework.web.context.request.NativeWebRequest webRequest, org.springframework.core.MethodParameter parameter, Type paramType)	Create the method argument value of the expected parameter type by reading from the given request.
Object	resolveArgument(org.springframework.core.MethodParameter parameter, org.springframework.web.method.support.ModelAndViewContainer mavContainer, org.springframework.web.context.request.NativeWebRequest webRequest, org.springframework.web.bind.support.WebDataBinderFactory binderFactory)	Throws MethodArgumentNotValidException if validation fails.
boolean	supportsParameter(org.springframework.core.MethodParameter parameter)
boolean	supportsReturnType(org.springframework.core.MethodParameter returnType)

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, getSupportedMediaTypes, isBindExceptionRequired, readWithMessageConverters, validateIfApplicable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RequestResponseBodyMethodProcessor

public RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters)

Basic constructor with converters only. Suitable for resolving @RequestBody. For handling @ResponseBody consider also providing a ContentNegotiationManager.

RequestResponseBodyMethodProcessor

public RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.HttpMessageConverter<?>> converters,
 @Nullable
 org.springframework.web.accept.ContentNegotiationManager manager)

Basic constructor with converters and ContentNegotiationManager. Suitable for resolving @RequestBody and handling @ResponseBody without Request~ or ResponseBodyAdvice.

RequestResponseBodyMethodProcessor

public RequestResponseBodyMethodProcessor(List<org.springframework.http.converter.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<org.springframework.http.converter.HttpMessageConverter<?>> converters,
 @Nullable
 org.springframework.web.accept.ContentNegotiationManager manager,
 @Nullable
 List<Object> requestResponseBodyAdvice)

Complete constructor for resolving @RequestBody and handling @ResponseBody.

Method Details

supportsParameter

public boolean supportsParameter(org.springframework.core.MethodParameter parameter)

supportsReturnType

public boolean supportsReturnType(org.springframework.core.MethodParameter returnType)

resolveArgument

public Object resolveArgument(org.springframework.core.MethodParameter parameter,
 @Nullable
 org.springframework.web.method.support.ModelAndViewContainer mavContainer,
 org.springframework.web.context.request.NativeWebRequest webRequest,
 @Nullable
 org.springframework.web.bind.support.WebDataBinderFactory binderFactory)
                       throws Exception

Throws MethodArgumentNotValidException if validation fails.

Throws:

org.springframework.http.converter.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

readWithMessageConverters

protected <T> Object readWithMessageConverters(org.springframework.web.context.request.NativeWebRequest webRequest,
 org.springframework.core.MethodParameter parameter,
 Type paramType)
                                        throws IOException,
org.springframework.web.HttpMediaTypeNotSupportedException,
org.springframework.http.converter.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

org.springframework.web.HttpMediaTypeNotSupportedException - if no suitable message converter is found

org.springframework.http.converter.HttpMessageNotReadableException

checkRequired

protected boolean checkRequired(org.springframework.core.MethodParameter parameter)

handleReturnValue

public void handleReturnValue(@Nullable
 Object returnValue,
 org.springframework.core.MethodParameter returnType,
 org.springframework.web.method.support.ModelAndViewContainer mavContainer,
 org.springframework.web.context.request.NativeWebRequest webRequest)
                       throws IOException,
org.springframework.web.HttpMediaTypeNotAcceptableException,
org.springframework.http.converter.HttpMessageNotWritableException

Throws:

IOException

org.springframework.web.HttpMediaTypeNotAcceptableException

org.springframework.http.converter.HttpMessageNotWritableException