public class ViewMethodReturnValueHandler extends Object implements HandlerMethodReturnValueHandler
View.
A null return value is left as-is leaving it to the configured
RequestToViewNameTranslator to select a view name by convention.
A View 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.
| Constructor and Description |
|---|
ViewMethodReturnValueHandler() |
| Modifier and Type | Method and 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. |
boolean |
supportsReturnType(MethodParameter returnType)
Whether the given method return type is
supported by this handler.
|
public boolean supportsReturnType(MethodParameter returnType)
HandlerMethodReturnValueHandlersupportsReturnType in interface HandlerMethodReturnValueHandlerreturnType - the method return type to checktrue if this handler supports the supplied return type;
false otherwisepublic void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception
HandlerMethodReturnValueHandlerModelAndViewContainer.setRequestHandled(boolean) flag to true
to indicate the response has been handled directly.handleReturnValue in interface HandlerMethodReturnValueHandlerreturnValue - the value returned from the handler methodreturnType - the type of the return value. This type must have
previously been passed to
HandlerMethodReturnValueHandler.supportsReturnType(org.springframework.core.MethodParameter)
and it must have returned truemavContainer - the ModelAndViewContainer for the current requestwebRequest - the current requestException - if the return value handling results in an error