Solved

Sessions & JSP

Posted on 2003-12-10
9
547 Views
Last Modified: 2010-03-31
Hi,

I am facing a problem with utilizing sessions in my JSP pages and would appreciate some help.. heres the code:

page1.jsp

<%
String clientid="12";

session = request.getSession(true);
if (session.isNew( )) {
  session.setAttribute("clientid",id);
}
%>
---------------------
page2.jsp
<%
out.println("SESSION CLIENT"+ session.getAttribute("clientid")+ "ID:"+ session.getId());
%>

The above is only printing the SESSION ID and is printing "null" for clientid.

Whats wrong with the above?

thnx,
sg
0
Comment
Question by:sgaucho
  • 2
  • 2
  • 2
  • +3
9 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 9913527
Http is a stateless protocol. There is no way of guaranteeing that a session start in page 1 will be the same as one in page 2. If you need to obtain an object with certainty, you need a persistence layer.
0
 
LVL 9

Expert Comment

by:vzilka
ID: 9913637
I think your problem is that in JSP there is already a session default variable.
Try removing the session = request.getSession(true) line, and see if it works.
THe HTTPSession object should be visible to your client. But - make sure you have a cookies enabled in your browser.
0
 

Author Comment

by:sgaucho
ID: 9913824
I have worked with session long time bak using the same syntax and it had worked..dunno whats causing the problem now..

vzilka, I commented the session = request.getSession(true) line but still unable to retrieve the clientid value using the getAttribute..

any more suggestions??
thnx,
sg

0
 

Accepted Solution

by:
AlexNYC earned 80 total points
ID: 9913867
If it is not a new session then the clientid will not be set.  Try removing the if statement to see if that is the problem
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:sgaucho
ID: 9913904
Hi guys,

I have solved the problem by commenting the //if (session.isNew())  line and its working now but that still doesnt explain why session.isNew() was not returning true.

thnx,
sg
0
 
LVL 9

Expert Comment

by:vzilka
ID: 9913983
Are you sure your browser support cookies?
0
 

Expert Comment

by:AlexNYC
ID: 9914003
try putting <%=session.isNew()%> at the bottom of the page and see what that value is
0
 
LVL 92

Expert Comment

by:objects
ID: 9915217
> session.isNew()

Don't think that'll ever return true in a jsp page.
0
 
LVL 15

Expert Comment

by:jimmack
ID: 9917180
Instead of:

if (session.isNew())

try:

if (session.getAttribute("clientid") == null)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For customizing the look of your lightweight component and making it look lucid like it was made of glass. Or: how to make your component more Apple-ish ;) This tip assumes your component to be of rectangular shape and completely opaque. (COD…
After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

947 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now