Package org.springframework.web.method.support

Class InvocableHandlerMethod

java.lang.Object

org.springframework.web.method.HandlerMethod

org.springframework.web.method.support.InvocableHandlerMethod

Direct Known Subclasses:

ServletInvocableHandlerMethod

public class InvocableHandlerMethod
extends HandlerMethod

Extension of HandlerMethod that invokes the underlying method with argument values resolved from the current HTTP request through a list of HandlerMethodArgumentResolver.

Since:

3.1

Author:

Rossen Stoyanchev, Juergen Hoeller, Sebastien Deleuze

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.web.method.HandlerMethod

HandlerMethod.HandlerMethodParameter

Field Summary

Fields inherited from class org.springframework.web.method.HandlerMethod

logger

Constructor Summary

Constructors

Modifier	Constructor	Description
	InvocableHandlerMethod(Object bean, Method method)	Create an instance from a bean instance and a method.
protected	InvocableHandlerMethod(Object bean, Method method, MessageSource messageSource)	Variant of InvocableHandlerMethod(Object, Method) that also accepts a MessageSource, for use in subclasses.
	InvocableHandlerMethod(Object bean, String methodName, Class<?>... parameterTypes)	Construct a new handler method with the given bean instance, method name and parameters.
	InvocableHandlerMethod(HandlerMethod handlerMethod)	Create an instance from a HandlerMethod.

Method Summary

Modifier and Type	Method	Description
protected Object	doInvoke(Object... args)	Invoke the handler method with the given argument values.
protected Object[]	getMethodArgumentValues(NativeWebRequest request, ModelAndViewContainer mavContainer, Object... providedArgs)	Get the method argument values for the current request, checking the provided argument values and falling back to the configured argument resolvers.
Object	invokeForRequest(NativeWebRequest request, ModelAndViewContainer mavContainer, Object... providedArgs)	Invoke the method after resolving its argument values in the context of the given request.
void	setDataBinderFactory(WebDataBinderFactory dataBinderFactory)	Set the WebDataBinderFactory to be passed to argument resolvers allowing them to create a WebDataBinder for data binding and type conversion purposes.
void	setHandlerMethodArgumentResolvers(HandlerMethodArgumentResolverComposite argumentResolvers)	Set HandlerMethodArgumentResolvers to use for resolving method argument values.
void	setParameterNameDiscoverer(ParameterNameDiscoverer parameterNameDiscoverer)	Set the ParameterNameDiscoverer for resolving parameter names when needed (e.g.

Methods inherited from class org.springframework.web.method.HandlerMethod

assertTargetBean, createWithResolvedBean, equals, findProvidedArgument, formatArgumentError, formatInvokeError, getBean, getBeanType, getBridgedMethod, getMethod, getMethodAnnotation, getMethodParameters, getResolvedFromHandlerMethod, getResponseStatus, getResponseStatusReason, getReturnType, getReturnValueType, getShortLogMessage, hashCode, hasMethodAnnotation, isVoid, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

InvocableHandlerMethod

public InvocableHandlerMethod(HandlerMethod handlerMethod)

Create an instance from a HandlerMethod.

InvocableHandlerMethod

public InvocableHandlerMethod(Object bean,
 Method method)

Create an instance from a bean instance and a method.

InvocableHandlerMethod

protected InvocableHandlerMethod(Object bean,
 Method method,
 @Nullable
 MessageSource messageSource)

Variant of InvocableHandlerMethod(Object, Method) that also accepts a MessageSource, for use in subclasses.

Since:

5.3.10

InvocableHandlerMethod

public InvocableHandlerMethod(Object bean,
 String methodName,
 Class<?>... parameterTypes)
                       throws NoSuchMethodException

Construct a new handler method with the given bean instance, method name and parameters.

Parameters:

bean - the object bean

methodName - the method name

parameterTypes - the method parameter types

Throws:

NoSuchMethodException - when the method cannot be found

Method Details

setHandlerMethodArgumentResolvers

public void setHandlerMethodArgumentResolvers(HandlerMethodArgumentResolverComposite argumentResolvers)

Set HandlerMethodArgumentResolvers to use for resolving method argument values.

setParameterNameDiscoverer

public void setParameterNameDiscoverer(ParameterNameDiscoverer parameterNameDiscoverer)

Set the ParameterNameDiscoverer for resolving parameter names when needed (e.g. default request attribute name).

Default is a DefaultParameterNameDiscoverer.

setDataBinderFactory

public void setDataBinderFactory(WebDataBinderFactory dataBinderFactory)

Set the WebDataBinderFactory to be passed to argument resolvers allowing them to create a WebDataBinder for data binding and type conversion purposes.

invokeForRequest

@Nullable
public Object invokeForRequest(NativeWebRequest request,
 @Nullable
 ModelAndViewContainer mavContainer,
 Object... providedArgs)
                        throws Exception

Invoke the method after resolving its argument values in the context of the given request.

Argument values are commonly resolved through HandlerMethodArgumentResolvers. The providedArgs parameter however may supply argument values to be used directly, i.e. without argument resolution. Examples of provided argument values include a WebDataBinder, a SessionStatus, or a thrown exception instance. Provided argument values are checked before argument resolvers.

Delegates to getMethodArgumentValues(org.springframework.web.context.request.NativeWebRequest, org.springframework.web.method.support.ModelAndViewContainer, java.lang.Object...) and calls doInvoke(java.lang.Object...) with the resolved arguments.

Parameters:

request - the current request

mavContainer - the ModelAndViewContainer for this request

providedArgs - "given" arguments matched by type, not resolved

Returns:

the raw value returned by the invoked method

Throws:

Exception - raised if no suitable argument resolver can be found, or if the method raised an exception

See Also:

• getMethodArgumentValues(org.springframework.web.context.request.NativeWebRequest, org.springframework.web.method.support.ModelAndViewContainer, java.lang.Object...)
• doInvoke(java.lang.Object...)

getMethodArgumentValues

protected Object[] getMethodArgumentValues(NativeWebRequest request,
 @Nullable
 ModelAndViewContainer mavContainer,
 Object... providedArgs)
                                    throws Exception

Get the method argument values for the current request, checking the provided argument values and falling back to the configured argument resolvers.

The resulting array will be passed into doInvoke(java.lang.Object...).

Throws:

Exception

Since:

5.1.2

doInvoke

@Nullable
protected Object doInvoke(Object... args)
                   throws Exception

Invoke the handler method with the given argument values.

Throws:

Exception