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From "Hanusch, Hartwig" <Hartwig.Hanu...@fja.com>
Subject AW: error in HttpSessionFacade when working with Apache/Tomcat 3. 2 - i bit more accurate
Date Mon, 18 Dec 2000 07:30:48 GMT
Hi Sean and everybody else

i tried to find out a bit more - this error is quite reproduceble. 
When using the same servlet i call from the get method the 
do post and versa visa. 
What i've seen is, that tomcat uses an other session object 
(what shouldnt be the case) ... and i cant go back to 3.1 because
of the cookie-session stuff (but the problem is not related to cookies 
anyway)

Any other suggestions?
Cheers Hartwig






> -----Urspr√ľngliche Nachricht-----
> Von:	Sean Kroah [SMTP:sean@wirex.com]
> Gesendet am:	Freitag, 15. Dezember 2000 18:31
> An:	tomcat-user@jakarta.apache.org
> Betreff:	Re: error in HttpSessionFacade when working with
> Apache/Tomcat 3.2
> 
> I am seeing a similar problem, but it is not related to mod_jk.
> Occassionaly  I try to access my Session I get this NullPointerException
> from HttpSessionFacade, which is just 
> trying to access the Session object. The code runs fine under Tomcat 3.1.
> Mind you I still think it's my code that is the  problem, a deadlock. It
> would be nice if a more meaningful exception could be thrown from these
> facade classes. This is the third time someone has pointed out that
> HttpSessionFacade is throwing a NPE and they are all in very different
> circumstance. Maybe i'll dig some more through the Tomcat code to figure
> it out. 
> 
> A quick fix for you would probably be to go back to a 3.1 release, if
> that's acceptable.... 
>   
> 
> Sean Kroah 
> 
> "Hanusch, Hartwig" wrote: 
> 
> 	Hi there, 
> 
> 	does anybody know why a servlet works fine with tomcat only (port
> 8080) 
> 	but when using apache/tomcat via jk_mod (or old jserv) the servlet
> throws 
> 	an error like that: 
> 
> 	java.lang.NullPointerException: 
> 	        at org.apache.tomcat.facade. 
> 	                HttpSessionFacade.getId(HttpSessionFacade.java:114) 
> 	... 
> 
> 	the calling code looks that way: 
> 
> 	session is hash of sessions 
> 
> 	for (Iterator i = sessions.iterator(); i.hasNext(); ) 
> 	{ 
> 	        HttpSession theHttpSession = (HttpSession) i.next(); 
> 	        String sid = theHttpSession.getId();            <----
> problem, 
> 	calling HttpSessionFacade .... 
> 	        if (loginObj.hasContentSessionRelatedBlaSession(sid) !=
> true) 
> 	        { 
> 	                tmpVec.add(theHttpSession); 
> 	        } 
> 	} 
> 
> 	Could that be a configuration error? Doesnt seems like?! Any ideas? 
> 	When looking at the HttpSession the stored session in memory seem to
> mix up! 
> 
> 	Happy to here from anybody 
> 	Cheers Hartwig
> 
> -- 
> Sean Kroah                                T:503.222.9660
>                                           F:503.241.5682
> WireX Communications, Inc. 
> Software Engineer,                        skroah@wirex.com
>  

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