Class RequestAttributeMethodArgumentResolver
java.lang.Object
org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver
org.springframework.web.servlet.mvc.method.annotation.RequestAttributeMethodArgumentResolver
- All Implemented Interfaces:
HandlerMethodArgumentResolver
public class RequestAttributeMethodArgumentResolver
extends AbstractNamedValueMethodArgumentResolver
Resolves method arguments annotated with an @
RequestAttribute
.- Since:
- 4.3
- Author:
- Rossen Stoyanchev
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Nested Class Summary
Nested classes/interfaces inherited from class org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver
AbstractNamedValueMethodArgumentResolver.NamedValueInfo
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptioncreateNamedValueInfo
(MethodParameter parameter) Create theAbstractNamedValueMethodArgumentResolver.NamedValueInfo
object for the given method parameter.protected void
handleMissingValue
(String name, MethodParameter parameter) Invoked when a named value is required, butAbstractNamedValueMethodArgumentResolver.resolveName(String, MethodParameter, NativeWebRequest)
returnednull
and there is no default value.protected Object
resolveName
(String name, MethodParameter parameter, NativeWebRequest request) Resolve the given parameter type and value name into an argument value.boolean
supportsParameter
(MethodParameter parameter) Whether the given method parameter is supported by this resolver.Methods inherited from class org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver
handleMissingValue, handleMissingValueAfterConversion, handleResolvedValue, resolveArgument
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Constructor Details
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RequestAttributeMethodArgumentResolver
public RequestAttributeMethodArgumentResolver()
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Method Details
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supportsParameter
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
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createNamedValueInfo
protected AbstractNamedValueMethodArgumentResolver.NamedValueInfo createNamedValueInfo(MethodParameter parameter) Description copied from class:AbstractNamedValueMethodArgumentResolver
Create theAbstractNamedValueMethodArgumentResolver.NamedValueInfo
object for the given method parameter. Implementations typically retrieve the method annotation by means ofMethodParameter.getParameterAnnotation(Class)
.- Specified by:
createNamedValueInfo
in classAbstractNamedValueMethodArgumentResolver
- Parameters:
parameter
- the method parameter- Returns:
- the named value information
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resolveName
@Nullable protected Object resolveName(String name, MethodParameter parameter, NativeWebRequest request) Description copied from class:AbstractNamedValueMethodArgumentResolver
Resolve the given parameter type and value name into an argument value.- Specified by:
resolveName
in classAbstractNamedValueMethodArgumentResolver
- Parameters:
name
- the name of the value being resolvedparameter
- the method parameter to resolve to an argument value (pre-nested in case of aOptional
declaration)request
- the current request- Returns:
- the resolved argument (may be
null
)
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handleMissingValue
Description copied from class:AbstractNamedValueMethodArgumentResolver
Invoked when a named value is required, butAbstractNamedValueMethodArgumentResolver.resolveName(String, MethodParameter, NativeWebRequest)
returnednull
and there is no default value. Subclasses typically throw an exception in this case.- Overrides:
handleMissingValue
in classAbstractNamedValueMethodArgumentResolver
- Parameters:
name
- the name for the valueparameter
- the method parameter- Throws:
ServletException
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