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java.lang.Object org.springframework.web.servlet.mvc.method.annotation.ViewNameMethodReturnValueHandler
public class ViewNameMethodReturnValueHandler
Handles return values of types void
and String
interpreting
them as view name reference.
A null
return value, either due to a void
return type or
as the actual return value is left as-is allowing the configured
RequestToViewNameTranslator
to select a view name by convention.
A String return value can be interpreted in more than one ways depending
on the presence of annotations like @ModelAttribute
or
@ResponseBody
. Therefore this handler should be configured after
the handlers that support these annotations.
Constructor Summary | |
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ViewNameMethodReturnValueHandler()
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Method Summary | |
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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. |
protected boolean |
isRedirectViewName(String viewName)
Whether the given view name is a redirect view reference. |
boolean |
supportsReturnType(MethodParameter returnType)
Whether the given method return type is supported by this handler. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ViewNameMethodReturnValueHandler()
Method Detail |
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public boolean supportsReturnType(MethodParameter returnType)
HandlerMethodReturnValueHandler
supportsReturnType
in interface HandlerMethodReturnValueHandler
returnType
- the method return type to check
true
if this handler supports the supplied return type;
false
otherwisepublic void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception
HandlerMethodReturnValueHandler
ModelAndViewContainer.setRequestHandled(boolean)
flag to true
to indicate the response has been handled directly.
handleReturnValue
in interface HandlerMethodReturnValueHandler
returnValue
- 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 true
mavContainer
- the ModelAndViewContainer for the current requestwebRequest
- the current request
Exception
- if the return value handling results in an errorprotected boolean isRedirectViewName(String viewName)
viewName
- the view name to check, never null
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