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

All Implemented Interfaces:
HandlerMethodArgumentResolver
Direct Known Subclasses:
AbstractMessageConverterMethodProcessor, RequestPartMethodArgumentResolver
```
public abstract class AbstractMessageConverterMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver
```
A base class for resolving method argument values by reading from the body of a request with HttpMessageConverters.
Since:
3.1
Author:
Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller

Field Summary
Fields
Modifier and Type Field Description
protected List<MediaType> allSupportedMediaTypes
protected Log logger
protected List<HttpMessageConverter<?>> messageConverters

Constructor Summary

Constructors
Constructor	Description
`AbstractMessageConverterMethodArgumentResolver(List<HttpMessageConverter<?>> converters)`	Basic constructor with converters only.
`AbstractMessageConverterMethodArgumentResolver(List<HttpMessageConverter<?>> converters, List<Object> requestResponseBodyAdvice)`	Constructor with converters and `Request~` and `ResponseBodyAdvice`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Object`	`adaptArgumentIfNecessary(Object arg, MethodParameter parameter)`	Adapt the given argument against the method parameter, if necessary.
`protected ServletServerHttpRequest`	`createInputMessage(NativeWebRequest webRequest)`	Create a new `HttpInputMessage` from the given `NativeWebRequest`.
`protected org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyAdviceChain`	`getAdvice()`	Return the configured `RequestBodyAdvice` and `RequestBodyAdvice` where each instance may be wrapped as a `ControllerAdviceBean`.
`protected boolean`	`isBindExceptionRequired(WebDataBinder binder, MethodParameter parameter)`	Whether to raise a fatal bind exception on validation errors.
`protected <T> Object`	`readWithMessageConverters(HttpInputMessage inputMessage, MethodParameter parameter, Type targetType)`	Create the method argument value of the expected parameter type by reading from the given HttpInputMessage.
`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.
`protected void`	`validateIfApplicable(WebDataBinder binder, MethodParameter parameter)`	Validate the binding target if applicable.

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

Methods inherited from interface org.springframework.web.method.support.HandlerMethodArgumentResolver
resolveArgument, supportsParameter

- Field Detail
  - logger
```
protected final Log logger
```
  - messageConverters
```
protected final List<HttpMessageConverter<?>> messageConverters
```
  - allSupportedMediaTypes
```
protected final List<MediaType> allSupportedMediaTypes
```
- Constructor Detail
  - AbstractMessageConverterMethodArgumentResolver
```
public AbstractMessageConverterMethodArgumentResolver(List<HttpMessageConverter<?>> converters)
```
    Basic constructor with converters only.
  - AbstractMessageConverterMethodArgumentResolver
```
public AbstractMessageConverterMethodArgumentResolver(List<HttpMessageConverter<?>> converters,
                                                      List<Object> requestResponseBodyAdvice)
```
    Constructor with converters and Request~ and ResponseBodyAdvice.
    Since:
    4.2
- Method Detail
  - getAdvice
```
protected org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyAdviceChain getAdvice()
```
    Return the configured RequestBodyAdvice and RequestBodyAdvice where each instance may be wrapped as a ControllerAdviceBean.
  - readWithMessageConverters
```
protected <T> Object readWithMessageConverters(NativeWebRequest webRequest,
                                               MethodParameter parameter,
                                               Type paramType)
                                        throws IOException,
                                               HttpMediaTypeNotSupportedException,
                                               HttpMessageNotReadableException
```
    Create the method argument value of the expected parameter type by reading from the given request.
    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
  - readWithMessageConverters
```
protected <T> Object readWithMessageConverters(HttpInputMessage inputMessage,
                                               MethodParameter parameter,
                                               Type targetType)
                                        throws IOException,
                                               HttpMediaTypeNotSupportedException,
                                               HttpMessageNotReadableException
```
    Create the method argument value of the expected parameter type by reading from the given HttpInputMessage.
    Type Parameters:
    T - the expected type of the argument value to be created
    Parameters:
    inputMessage - the HTTP input message representing the current request
    parameter - the method parameter descriptor (may be null)
    targetType - the target type, not necessarily the same as the method parameter type, e.g. for HttpEntity<String>.
    Returns:
    the created method argument value
    Throws:
    IOException - if the reading from the request fails
    HttpMediaTypeNotSupportedException - if no suitable message converter is found
    HttpMessageNotReadableException
  - createInputMessage
```
protected ServletServerHttpRequest createInputMessage(NativeWebRequest webRequest)
```
    Create a new HttpInputMessage from the given NativeWebRequest.
    Parameters:
    webRequest - the web request to create an input message from
    Returns:
    the input message
  - validateIfApplicable
```
protected void validateIfApplicable(WebDataBinder binder,
                                    MethodParameter parameter)
```
    Validate the binding target if applicable.
    The default implementation checks for @javax.validation.Valid, Spring's Validated, and custom annotations whose name starts with "Valid".
    Parameters:
    binder - the DataBinder to be used
    parameter - the method parameter descriptor
    Since:
    4.1.5
    See Also:
    isBindExceptionRequired(org.springframework.web.bind.WebDataBinder, org.springframework.core.MethodParameter)
  - isBindExceptionRequired
```
protected boolean isBindExceptionRequired(WebDataBinder binder,
                                          MethodParameter parameter)
```
    Whether to raise a fatal bind exception on validation errors.
    Parameters:
    binder - the data binder used to perform data binding
    parameter - the method parameter descriptor
    Returns:
    true if the next method argument is not of type Errors
    Since:
    4.1.5
  - adaptArgumentIfNecessary
```
protected Object adaptArgumentIfNecessary(Object arg,
                                          MethodParameter parameter)
```
    Adapt the given argument against the method parameter, if necessary.
    Parameters:
    arg - the resolved argument
    parameter - the method parameter descriptor
    Returns:
    the adapted argument, or the original resolved argument as-is
    Since:
    4.3.5

Modifier and Type	Field	Description
`protected List<MediaType>`	`allSupportedMediaTypes`
`protected Log`	`logger`
`protected List<HttpMessageConverter<?>>`	`messageConverters`

Class AbstractMessageConverterMethodArgumentResolver

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.springframework.web.method.support.HandlerMethodArgumentResolver

Field Detail

logger

messageConverters

allSupportedMediaTypes

Constructor Detail

AbstractMessageConverterMethodArgumentResolver

AbstractMessageConverterMethodArgumentResolver

Method Detail

getAdvice

readWithMessageConverters

readWithMessageConverters

createInputMessage

validateIfApplicable

isBindExceptionRequired

adaptArgumentIfNecessary