java.lang.Object
- org.springframework.web.method.annotation.ModelMethodProcessor

All Implemented Interfaces:
HandlerMethodArgumentResolver, HandlerMethodReturnValueHandler
```
public class ModelMethodProcessor
extends Object
implements HandlerMethodArgumentResolver, HandlerMethodReturnValueHandler
```
Resolves Model arguments and handles Model return values.
A Model return type has a set purpose. Therefore this handler should be configured ahead of handlers that support any return value type annotated with @ModelAttribute or @ResponseBody to ensure they don't take over.
Since:
3.1
Author:
Rossen Stoyanchev

Constructor Summary
Constructors
Constructor Description
ModelMethodProcessor()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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.
`Object`	`resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory)`	Resolves a method parameter into an argument value from a given request.
`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 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ModelMethodProcessor
```
public ModelMethodProcessor()
```
- Method Detail
  - supportsParameter
```
public boolean supportsParameter(MethodParameter parameter)
```
    Description copied from interface: HandlerMethodArgumentResolver
    Whether the given method parameter is supported by this resolver.
    Specified by:
    supportsParameter in interface HandlerMethodArgumentResolver
    Parameters:
    parameter - the method parameter to check
    Returns:
    true if this resolver supports the supplied parameter; false otherwise
  - resolveArgument
```
@Nullable
public Object resolveArgument(MethodParameter parameter,
                              @Nullable
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest,
                              @Nullable
                              WebDataBinderFactory binderFactory)
                       throws Exception
```
    Description copied from interface: HandlerMethodArgumentResolver
    Resolves a method parameter into an argument value from a given request. A ModelAndViewContainer provides access to the model for the request. A WebDataBinderFactory provides a way to create a WebDataBinder instance when needed for data binding and type conversion purposes.
    Specified by:
    resolveArgument in interface HandlerMethodArgumentResolver
    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:
    Exception - in case of errors with the preparation of argument values
  - supportsReturnType
```
public boolean supportsReturnType(MethodParameter returnType)
```
    Description copied from interface: HandlerMethodReturnValueHandler
    Whether the given method return type is supported by this handler.
    Specified by:
    supportsReturnType in interface HandlerMethodReturnValueHandler
    Parameters:
    returnType - the method return type to check
    Returns:
    true if this handler supports the supplied return type; false otherwise
  - handleReturnValue
```
public void handleReturnValue(@Nullable
                              Object returnValue,
                              MethodParameter returnType,
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest)
                       throws Exception
```
    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.
    Specified by:
    handleReturnValue in interface HandlerMethodReturnValueHandler
    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:
    Exception - if the return value handling results in an error

Class ModelMethodProcessor

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ModelMethodProcessor

Method Detail

supportsParameter

resolveArgument

supportsReturnType

handleReturnValue