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From "user080701" <user080...@hotmail.com>
Subject Re: app throws java.lang.NoClassDefFoundError sometimes, and sometimes it doesnt
Date Thu, 13 Jan 2011 14:08:16 GMT
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From: "Sam Zilverberg" <samzilverberg@gmail.com>
Sent: Thursday, January 13, 2011 9:47 PM
To: "tomcat" <users@tomcat.apache.org>
Subject: app throws java.lang.NoClassDefFoundError sometimes, and sometimes 
it doesnt

> Hi,
>
> I'm running a wicket app on tomcat 6.0.20.
> Once in a while I need to redeploy it (after fixing some stuff, adding
> features and so on).
> This is how I redeploy:
> 1.Use tomcat manager to undeploy the running app.
> 2.Deploy the new app by copying the new WAR file to a library inside 
> tomcat.
>
> Everything seems fine but when I use the app I sometimes get a java.lang.
> NoClassDefFoundError.
> The class can be just about any class in the project and its libs.
> Sometimes its a Hibernate related class, sometimes its a Wicket related
> class and
> sometimes its a class from my app.
> Redeploying once (or a couple of times) solves the problem.
>
> This is very inconsistent and bothering.
> After deploying I never know if the app is going to be ok or if one of its
> pages will keep throwing internal errors on account of the
> NoClassDefFoundError.
>
> Did any one ever encounter this kind of problem?
> Do you have any ideas on what is causing this or what I can do to diagnose
> this problem?
> I'm clueless at the moment :(
>
> Thanks
> -Sam
>
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus 
> signature database 5783 (20110113) __________
>
> The message was checked by ESET NOD32 Antivirus.
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> http://www.eset.com
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> 

__________ Information from ESET NOD32 Antivirus, version of virus signature database 5783
(20110113) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com




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