Package org.springframework.web.servlet.support

Class SessionFlashMapManager

java.lang.Object

org.springframework.web.servlet.support.AbstractFlashMapManager

org.springframework.web.servlet.support.SessionFlashMapManager

All Implemented Interfaces:

FlashMapManager

public class SessionFlashMapManager
extends AbstractFlashMapManager

Store and retrieve FlashMap instances to and from the HTTP session.

Since:

3.1.1

Author:

Rossen Stoyanchev, Juergen Hoeller

Field Summary

Fields inherited from class org.springframework.web.servlet.support.AbstractFlashMapManager

logger

Constructor Summary

Constructors

Constructor	Description
SessionFlashMapManager()

Method Summary

Modifier and Type	Method	Description
protected Object	getFlashMapsMutex(HttpServletRequest request)	Exposes the best available session mutex.
protected List<FlashMap>	retrieveFlashMaps(HttpServletRequest request)	Retrieves saved FlashMap instances from the HTTP session, if any.
protected void	updateFlashMaps(List<FlashMap> flashMaps, HttpServletRequest request, HttpServletResponse response)	Saves the given FlashMap instances in the HTTP session.

Methods inherited from class org.springframework.web.servlet.support.AbstractFlashMapManager

getFlashMapTimeout, getUrlPathHelper, isFlashMapForRequest, retrieveAndUpdate, saveOutputFlashMap, setFlashMapTimeout, setUrlPathHelper

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SessionFlashMapManager

public SessionFlashMapManager()

Method Details

retrieveFlashMaps

@Nullable
protected List<FlashMap> retrieveFlashMaps(HttpServletRequest request)

Retrieves saved FlashMap instances from the HTTP session, if any.

Specified by:

retrieveFlashMaps in class AbstractFlashMapManager

Parameters:

request - the current request

Returns:

a List with FlashMap instances, or null if none found

updateFlashMaps

protected void updateFlashMaps(List<FlashMap> flashMaps,
 HttpServletRequest request,
 HttpServletResponse response)

Saves the given FlashMap instances in the HTTP session.

Specified by:

updateFlashMaps in class AbstractFlashMapManager

Parameters:

flashMaps - a (potentially empty) list of FlashMap instances to save

request - the current request

response - the current response

getFlashMapsMutex

protected Object getFlashMapsMutex(HttpServletRequest request)

Exposes the best available session mutex.

Overrides:

getFlashMapsMutex in class AbstractFlashMapManager

Parameters:

request - the current request

Returns:

the mutex to use (may be null if none applicable)

See Also:

• WebUtils.getSessionMutex(jakarta.servlet.http.HttpSession)
• HttpSessionMutexListener