Servlet session problem

hi all,
I am new to servlet. i have creted a server program and many user can login using thier username ,role and password. if more than one user can login simultaneously i could nt able to mainatin the session, it always showing the last login datas to all users(who'slogin earlier). how do i solve this and please any one explain me with some example?
regards
sm

if more than one user can login simultaneously i could nt able to mainatin the session, it always showing the last login datas to all users(who'slogin earlier). Do you mean to say different users logging into the system using same browser window?
how do i solve thisThis is more about what do you want to do? One solution might be :- if the user authentication succeeds, add a logic that will invalidate the previous session and create a new session for this new user.

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 With as much detail omitted for simplicity;
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 I have the same problem. Could any one help us?
 "David" <[email protected]> wrote:
 >
 >I keep getting the annoying error as listed, and the server also keeps
 >reporting
 >that I can only connect from 0 unique ip addresses. Has anybody else
 >seen these
 >type of frustrations on 8.1 sp2, or can explain them.
 >
 >With as much detail omitted for simplicity;
 >
 >Frustration 1.
 >I have a 8sp2 server running all ok, occasionally after a redeploy of
 >an ear file
 >I attempt to load a jsp file, and the error below is thrown.
 >
 >The JSP has a bean which is session based, and as from following the
 >stack trace
 >it is around some weblogic code which tests if my license allows access
 >to the
 >http session (on a developer license). I then have to start another
 >server instance
 >and do a deployment of a v.simple war, and access this, then deploy the
 >same war
 >to the broken server and access that, then the initial jsp works fine.
 > no code
 >changes just environment stops, starts and redeploys!
 >
 >Frustration 2
 >Server runs ok, tray and connect from two machines (I have an ldap server
 >that
 >wants to 'broadcast' messages to my server), error of too many connections.
 >The ip connection issues can in most cases be removed with a server restart.
 >
 >
 >EXCEPTION TRACE
 >
 >java.lang.IllegalStateException: Internal Servlet Session Process Error
 >Found!
 >
 >With the following stack trace:
 >
 >java.lang.IllegalStateException: Internal Servlet Session Process Error
 >Found!
 > at weblogic.servlet.internal.session.SessionData.checkProcess(SessionData.java:1148)
 > at weblogic.servlet.internal.session.SessionData.setAttribute(SessionData.java:501)
 > at jsp_servlet._security.__changeprofile._jspService(__changeprofile.java:135)
 > at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
 > at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
 > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
 > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:446)
 > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
 > at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
 > at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
 > at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
 > at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
 > at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
 > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
 > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
 >
 >

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Mike

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Servlet Session Object

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Hello Linus,
Actually, you would want to retrieve the necessary objects from your servlet context
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pattern, please see the following link:
http://java.sun.com/blueprints/corej2eepatterns/Patterns/TransferObject.html
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Linus Nikander" <[email protected]> wrote:
Is it possible to accesss objects stored in a Servlet session context
from
an EJB ? If so, how ?
//Linus Nikander - [email protected]

Servlet Sessions+dont have a clue

im trying to get a servlet session goin for a college project,i know its hard to help someone on this but please try this is driving me mad,,,
im useless at java so i have just being piecing together other peoples code and trying to get it working,
Iam trying to accept a username and password for the Oracle database and then put the resulting database connection into a session variable...
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import java.io.IOException;
import java.io.PrintWriter;
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back again,,
the code above is causing the following error when i try to run it,,
Apache Tomcat/4.0.4 - HTTP Status 500 - Internal Server Error
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
the error goes on to give a very long list of exceptions and root causes,there is nothing wrong with Tomcat because i can run the other version of this program that doesnt have any sessions is it,,,
thanks

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Add
acl.access.weblogic.admin.mbean.MBeanHome=guest
in the filerealm.properties file.
Jim Doyle wrote:
Hi,
I discovered more about why I'm not seeing any Servlet Session Runtime
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"####<Sep 22, 2002 6:46:43 PM EDT> <Warning> <Dispatcher>
<chile.iso-ne.com> <adminserver> <ExecuteThread: '7' for queue:
'__weblogic_admin_rmi_queue'> <> <> <000000> <RuntimeException thrown
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'7074298665992588400S:10.145.220.82:[7001,7001,7002,7002,7001,7002,-1]:smsdomain:adminserver',
oid: '267', implementation:
'weblogic.management.internal.AdminMBeanHomeImpl@3c7b65''>
weblogic.management.NoAccessRuntimeException: User guest does not have
access permission on weblogic.admin.mbean.MBeanHome
at weblogic.management.internal.Helper.checkAdminPermission(Helper.java:1637)
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<chile.iso-ne.com> <webuiserver> <ExecuteThread: '0' for queue:
'default'> <> <> <100032> <Error creating servlet session runtime>
weblogic.management.NoAccessRuntimeException: User guest does not have
access permission on weblogic.admin.mbean.MBeanHome
at weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:85)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:136)
at weblogic.rmi.internal.ProxyStub.invoke(ProxyStub.java:35)
at $Proxy7.getMBeanServer(Unknown Source)
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at weblogic.management.internal.MBeanHomeImpl.getMBean(MBeanHomeImpl.java:118)
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at weblogic.servlet.internal.session.SessionData$1.run(SessionData.java:185)
at weblogic.management.internal.Helper.doLocally(Helper.java:1656)
at weblogic.servlet.internal.session.SessionData.getRuntimeMBean(SessionData.java:179)
at weblogic.servlet.internal.session.SessionData.<init>(SessionData.java:166)
Looks like the managed server is making a request of the admin server
and propagating the "guest" principal instead of "system".
These principal propagation errors from managed-to-admin seem to
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place at a time in various BEA service packs. For instance, there's
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server, and I'm sure I've read about others. Isn't there a way to
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Jim--
Rajesh Mirchandani
Developer Relations Engineer
BEA Support

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I had deploy two application in tomcat with two different war files e.g., A.war and B.war.,
At one situation i am forward my application from A to B at the time i had store some values in session in A and Pass to B
My question is
Whether it is possible to pass the session from A application to B application how it is can u give solutions
Regards
Marimuthu

hi,
you have to make true for crossContext attribute
for ex
in your installtomcatdir/conf/server.xml
<Context path="/air" docBase="d:/air" debug="0"
reloadable="true" crossContext="true">

Session problem in servlet??

hello,
i have made a simple shopping cart which goes through the
following stage:
1st stage:
// Additions to the shopping cart
HttpSession clientSession = request.getSession( true );
ShoppingCart vBasket = (ShoppingCart)clientSession.getValue("thecart");
if ( vBasket == null ){
System.out.println("NO CART");
vBasket = new ShoppingCart();
clientSession.putValue("thecart", vBasket);
System.out.println("MADE THE CART");
vBasket.add(the_item);
// at this stage, the items are being added to a hashtable
2nd stage:
HttpSession clientSession = request.getSession(false);
System.out.println("GOT THE SESSION");
ShoppingCart vBasket = (ShoppingCart)clientSession.getValue("thecart");
if ( vBasket == null ){
System.out.println("CART HASN'T BEEN MADE!!");
throw new Exception();
// At this stage, the object of the ShoppingCart class still has null value even if in the existing session the ShoppingCart has been made at stage 1. Any idea why this is happening??
thanks
Richard

i believe that if u declare the writer before u get the session you may have problem like yours (happened to me). so make sure to get the session before instantiate your (response)writer.

Session problem in a new window created by window.open()

hello,
I have a drugsearch.jsp page, I sessioned an durgCollection object on this jsp page using session.setAttribute("drugCollection",drugCollection);
there is a link on this jsp which will call a javascript to open a new window .
here is the javascript to open another new window:
function openReportWindow()
window.open("/drug/Report.jsp","report", "toolbar,scrollbars,width=800,height=800,left=100,top=10");
but in the Report.jsp, I won't be able to get the same session object as in the calling jsp ( drugsearch.jsp) by calling session.getAttribute("drugCollection").
if I change the link on drugsearch.jsp to link to the Report.jsp directly instead of opening a new window, then I can get the same session object from the Report.jsp.
what's the problem? can someone give me an advice?
thanks

A session is assosiated with one client(browser).
when you open a new browser, a new session is created. In order to have common place for both the browsers, try storing the data in the 'Servlet Context'

Servlet session problem

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