Package javax.servlet.http
Interface HttpSessionAttributeListener
- All Superinterfaces:
EventListener
Interface for receiving notification events about HttpSession
attribute changes.
In order to receive these notification events, the implementation
class must be either declared in the deployment descriptor of the web
application, annotated with WebListener
,
or registered via one of the addListener methods defined on
ServletContext
.
The order in which implementations of this interface are invoked is unspecified.
- Since:
- Servlet 2.3
-
Method Summary
Modifier and TypeMethodDescriptionvoid
Receives notification that an attribute has been added to a session.void
Receives notification that an attribute has been removed from a session.void
Receives notification that an attribute has been replaced in a session.
-
Method Details
-
attributeAdded
Receives notification that an attribute has been added to a session.- Parameters:
event
- the HttpSessionBindingEvent containing the session and the name and value of the attribute that was added
-
attributeRemoved
Receives notification that an attribute has been removed from a session.- Parameters:
event
- the HttpSessionBindingEvent containing the session and the name and value of the attribute that was removed
-
attributeReplaced
Receives notification that an attribute has been replaced in a session.- Parameters:
event
- the HttpSessionBindingEvent containing the session and the name and (old) value of the attribute that was replaced
-