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Session Control Points
1. Session Startup
Once launched, application waits for
requests
When the top page URL is requested a new session is started for the new user
This is your 1st opportunity to customise interactions with this particular user
public Session() {super(); /* ** Put your per-session initialization code here ** */ System.out.println("Second step: Session starts");}
2. Session Runs
The Session object handles an open ended
series of requests for service from the site
3. Session shutdown
When user interactions conclude, the session will terminate
Automatically terminate after a timeout period of no interaction - default is 1 hour
Releases resources which improves scalability and enhances security
The default timeout for all sessions is set in the application class
public Application() {super(); /* ** Put your application initialization code here ** */ System.out.println("First step: Server starting up"); //change the default session time out in seconds setSessionTimeOut (new Integer (60 * 10));}
You can also set the time out for a particular session in the session constructor
You can end the session when you want to, e.g. when the customer has finished placing an order
Session().terminate;You can override terminate to cleanup the session public void terminate() {
/* ** Put your session shutdown code here ** */ System.out.println("Second last step: Session shutdown"); super.terminate();}
Lecture 3 Demo 1 (Download)
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Page updated August 25, 2004
