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How to delete Session data in JSP?
517 Lectures 57 hours
When you are done with a user's session data, you have several options −
Remove a particular attribute − You can call the public void removeAttribute(String name) method to delete the value associated with the particular key.
Delete the whole session − You can call the public void invalidate() method to discard an entire session.
Setting Session timeout − You can call the public void setMaxInactiveInterval(int interval) method to set the timeout for a session individually.
Log the user out − The servers that support servlets 2.4, you can call logout to log the client out of the Web server and invalidate all sessions belonging to all the users.
web.xml Configuration − If you are using Tomcat, apart from the above-mentioned methods, you can configure the session time out in web.xml file as follows.
<session-config> <session-timeout>15</session-timeout> </session-config>
The timeout is expressed as minutes and overrides the default timeout which is 30 minutes in Tomcat.
The getMaxInactiveInterval( ) method in a servlet returns the timeout period for that session in seconds. So if your session is configured in web.xml for 15 minutes, getMaxInactiveInterval( ) returns 900.
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