How many users are browsing this website?

Question

Hello,
I would like to find out how many unique users are browsing a particular website in java. Do any one have any idea of how to do this? Did any one work out on this? Source code would be helpful.
Thanks
James

Answer 1

Ya you can really track the no. of users on your site. For this you will have to create HttpSessionListener and register it. Even though I have never done this but this is how it can be done.
Create the bean with incrementCount(), decrementCount() and getCount() method.
In HttpSessionListener.sessionCreated(HttpSessionEvent) method:
a) retrive the above bean from application object
b) if it is not in application object create new object of above bean
c) increment counter in the bean
d) put the bean in application object
In HttpSessionListener.sessionDestroyed(HttpSessionEvent) method
a) retrive the above bean from application object
b) if it is not in application object create new object of above bean and set the counter to zero
d) else if the bean exist then decrement the counter
e) store the bean in application object
Use the value stored in the bean as the no. of visitors currently on the website.
KNOWN ISSUES:
a) When user leaves the site only after his session timesout will the counter decremented.
b) In above Listener methods you need to synchronize the application object.
Thats all in short, till then byeee....