org.springframework.web.servlet.mvc.method.annotation

Class ModelAndViewMethodReturnValueHandler

java.lang.Object

org.springframework.web.servlet.mvc.method.annotation.ModelAndViewMethodReturnValueHandler

All Implemented Interfaces:

HandlerMethodReturnValueHandler

public class ModelAndViewMethodReturnValueHandler
extends Object
implements HandlerMethodReturnValueHandler

Handles return values of type ModelAndView copying view and model information to the ModelAndViewContainer.

If the return value is null, the ModelAndViewContainer.setRequestHandled(boolean) flag is set to true to indicate the request was handled directly.

A ModelAndView 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 and Description
ModelAndViewMethodReturnValueHandler()

Method Summary

Modifier and Type	Method and Description
String[]	getRedirectPatterns() Return the configured redirect patterns, if any.
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.
void	setRedirectPatterns(String... redirectPatterns) Configure one more simple patterns (as described in PatternMatchUtils.simpleMatch(java.lang.String, java.lang.String)) to use in order to recognize custom redirect prefixes in addition to "redirect:".
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

ModelAndViewMethodReturnValueHandler

public ModelAndViewMethodReturnValueHandler()

Method Detail

setRedirectPatterns

public void setRedirectPatterns(@Nullable
                                String... redirectPatterns)

Configure one more simple patterns (as described in PatternMatchUtils.simpleMatch(java.lang.String, java.lang.String)) to use in order to recognize custom redirect prefixes in addition to "redirect:".

Note that simply configuring this property will not make a custom redirect prefix work. There must be a custom View that recognizes the prefix as well.

Since:

4.1

getRedirectPatterns

@Nullable
public String[] getRedirectPatterns()

Return the configured redirect patterns, if any.

Since:

4.1

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

isRedirectViewName

protected boolean isRedirectViewName(String viewName)

Whether the given view name is a redirect view reference. The default implementation checks the configured redirect patterns and also if the view name starts with the "redirect:" prefix.

Parameters:

viewName - the view name to check, never null

Returns:

"true" if the given view name is recognized as a redirect view reference; "false" otherwise.