RE: Checking for invalidated session
But surely theres a better way?
Whould I be better off replacing session.invalidate() with session = null?
-Original Message-
From: Justin Ruthenbeck [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 6:44 PM
To: Tomcat Users List
Subject: Re: Checking for invalidated session
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
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Re: Checking for invalidated session
How about:
if(session.getAttribute(myattrib)==null) {
}
Tim Davidson wrote:
But surely theres a better way?
Whould I be better off replacing session.invalidate() with session = null?
-Original Message-
From: Justin Ruthenbeck [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 6:44 PM
To: Tomcat Users List
Subject: Re: Checking for invalidated session
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To unsubscribe, e-mail: [EMAIL PROTECTED]
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RE: Checking for invalidated session
I'm trying to ensure that a session is newly created when I reach my index
page. The logic is reversed from your question but I believe the principle
is the same inasmuchas I want to know whether or not a valid session exists.
if (! session.isNew() )
{
session.invalidate();
%
rsp:sendRedirect
rsp:encodeRedirectUrl/scoutgroup/index.jsp/rsp:encodeRedirectUrl
/rsp:sendRedirect
%
}
The redirect is to cause the page to be reloaded after the invalidate()
since JSP, by default, creates a new session when the page is loaded.
In the body of the page I had a line
pYou are in session. The session id is %=session.getId()%.
which produces The session id is null prior to inserting the redirect.
After the redirect was inserted the html was not sent to the browser until a
valid session was established at which time each visit to or browser refresh
of the page produced a new session id.
Someone with more than three months of playing with this as a spare time
hobby feel free to critique the solution please.
Murray
-Original Message-
From: Tim Davidson [mailto:[EMAIL PROTECTED]
Sent: Friday, 1 August 2003 18:10
To: Tomcat Users List
Subject: RE: Checking for invalidated session
But surely theres a better way?
Whould I be better off replacing session.invalidate() with session =
null?
-Original Message-
From: Justin Ruthenbeck [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 6:44 PM
To: Tomcat Users List
Subject: Re: Checking for invalidated session
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already
invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
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RE: Checking for invalidated session
thanks.
the other option which I dont like was:
try
{
session.invalidate();
}
catch (Throwable t)
{
// Session is already invalid
}
-Original Message-
From: Murray [mailto:[EMAIL PROTECTED]
Sent: Friday, August 01, 2003 2:14 PM
To: Tomcat Users List
Subject: RE: Checking for invalidated session
I'm trying to ensure that a session is newly created when I reach my index
page. The logic is reversed from your question but I believe the principle
is the same inasmuchas I want to know whether or not a valid session exists.
if (! session.isNew() )
{
session.invalidate();
%
rsp:sendRedirect
rsp:encodeRedirectUrl/scoutgroup/index.jsp/rsp:encodeRedirectUrl
/rsp:sendRedirect
%
}
The redirect is to cause the page to be reloaded after the invalidate()
since JSP, by default, creates a new session when the page is loaded.
In the body of the page I had a line
pYou are in session. The session id is %=session.getId()%.
which produces The session id is null prior to inserting the redirect.
After the redirect was inserted the html was not sent to the browser until a
valid session was established at which time each visit to or browser refresh
of the page produced a new session id.
Someone with more than three months of playing with this as a spare time
hobby feel free to critique the solution please.
Murray
-Original Message-
From: Tim Davidson [mailto:[EMAIL PROTECTED]
Sent: Friday, 1 August 2003 18:10
To: Tomcat Users List
Subject: RE: Checking for invalidated session
But surely theres a better way?
Whould I be better off replacing session.invalidate() with session =
null?
-Original Message-
From: Justin Ruthenbeck [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 6:44 PM
To: Tomcat Users List
Subject: Re: Checking for invalidated session
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already
invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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RE: Checking for invalidated session
At 01:10 AM 8/1/2003, you wrote:
But surely theres a better way?
Whould I be better off replacing session.invalidate() with session =
null?
No, you wouldn't be better off -- it won't work. :) There's no reason not
to like this solution, IMHO. If it makes your code look ugly, put it in a
static method and make it look like this:
if (SessionUtil.isInvalid(session))
justin
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Checking for invalidated session
i guess this will work fine ...
session = request.getSession( false );
if( session.isNew( ) )
{
out.println( new session );
}
someone let me know if i'm wrong.
hugs,
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
-Original Message-
From: Tim Davidson [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 12:32
To: [EMAIL PROTECTED]
Subject: Checking for invalidated session
Hi,
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Checking for invalidated session
sorry.
session = request.getSession( false );
if( session != null )
{
session.invalidate();
}
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
-Original Message-
From: Moraes, Fabio [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 12:37
To: 'Tomcat Users List'
Subject: RE: Checking for invalidated session
Importance: High
i guess this will work fine ...
session = request.getSession( false );
if( session.isNew( ) )
{
out.println( new session );
}
someone let me know if i'm wrong.
hugs,
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
-Original Message-
From: Tim Davidson [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 12:32
To: [EMAIL PROTECTED]
Subject: Checking for invalidated session
Hi,
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Checking for invalidated session
No that wont work, because if the session was null it would throw a
nullpointerexception not a servletException with the session is already invalidated
-Original Message-
From: Moraes, Fabio [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 4:39 PM
To: 'Tomcat Users List'
Subject: RE: Checking for invalidated session
Importance: High
sorry.
session = request.getSession( false );
if( session != null )
{
session.invalidate();
}
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
-Original Message-
From: Moraes, Fabio [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 12:37
To: 'Tomcat Users List'
Subject: RE: Checking for invalidated session
Importance: High
i guess this will work fine ...
session = request.getSession( false );
if( session.isNew( ) )
{
out.println( new session );
}
someone let me know if i'm wrong.
hugs,
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
-Original Message-
From: Tim Davidson [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 31, 2003 12:32
To: [EMAIL PROTECTED]
Subject: Checking for invalidated session
Hi,
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Checking for invalidated session
At 08:31 AM 7/31/2003, you wrote:
How can you check to see if a session has already been validated?
i.e.
if( !session.isInvalidated()) -- what should go here?
{
session.invalidate();
}
to prevent the following exception:
org.apache.jasper.JasperException: invalidate: Session already invalidated
If you don't want to just catch and ignore the JasperException, then use
something like this:
try
{
session.getAttributeNames();
}
catch (java.lang.IllegalStateException isse)
{
// Session is already invalid
}
justin
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
