Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

HttpSessionListener doesn't listens to the event

 
Ranch Hand
Posts: 66
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Report post to moderator
Hi I am arun.The HttpSessionListener event is not firing up when a new session is created.The following program(ConcurrentUserTracker) increments the static variable "users" once when each session is created.
The servlet DispalyUsers displays the number of current active sessions in a webapplication.But the output I am always getting is 0(zero) eventhough more than 5 sessions accesses the practice(Web Application Name).See I have localarea network thats why I can able to access the webapplication simultaneously with 5 sessions.

Web Application name is practice


Here is the following code which implements the HttpSessionListener interface


ConcurrentUserTracker.java

Here is the servlet code which displays the number of active sessions.

DisplayUsers.java


and finally here is the listener element which I added to the deployment descriptor web.xml of the webapplication(practice)


I added this element immediately after the <web-app> element.

then the <servlet> and <servlet-mapping> elements are deployed as follows

<servlet>
<servlet-name>DisplayUsers</servlet-name>
<servlet-class>DisplayUsers</servlet-class>
</servlet>

after this

<servlet-mapping>
<servlet-name>DisplayUsers</servlet-name>
<url-pattern>/DisplayUsers</url-pattern>
</servlet-mapping>


After performing all this operations I opened my browser and executed the servlet I got the output as

Users:0


I fighted a lot to get the output as Users:1 or more but I don't.So please someone help me to resolve this problem

[ July 26, 2006: Message edited by: Arun Arun ]
[ July 26, 2006: Message edited by: Ben Souther ]
 
Sheriff
Posts: 13411
Firefox Browser VI Editor Redhat
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Report post to moderator
Javaranch tip:

If you are going to post more than a line or two of your code, wrap that
code in a set of UBB Code tags.
Doing so will help to preserve your code's indenting, making it easier to read.
If it is easier to read, more people will actaully read it and you will
stand a better chance of getting help with your question.



I've added them to your original post in the hopes that it will help you get a meaningful answer.
 
Sheriff
Posts: 67746
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Report post to moderator
"Arun Arun",

There aren't many rules that you need to worry about here on the Ranch, but one that we take very seriously regards the use of proper names. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
JavaRanch Sheriff
 
Ben Souther
Sheriff
Posts: 13411
Firefox Browser VI Editor Redhat
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Report post to moderator
Duplicate of:
https://coderanch.com/t/363070/Servlets/java/HttpSessionListener-doesn-listens-event

That one has answers so I'm closing this one.

Arun,
Please do not post your question mulitple times.
Doing so wastes people's time.

Had I noticed this earlier, I would have closed the other one.
This one has a much more meaningful subject line.
 
That new kid is a freak. Show him this tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
    Bookmark Topic Watch Topic
  • New Topic