Hi Thank You for giving some direction to work upon. I will try and test the way you have suggested and reply my findings...
Regards Nehal -----Original Message----- From: Michel Costa [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 11, 2006 10:17 PM To: [EMAIL PROTECTED] Subject: RE: unable to load classes I think I am looking for the same thing, but the reason I am trying to do that is to allow reloading classes from WEB-INF/classes without reloading the context. I searched a little and found that: http://tomcat.apache.org/tomcat-5.5-doc/config/loader.html Hope it helps you... I am still trying to make it work... here is a reference to my email message in the list, asking about the context loader: http://mail-archives.apache.org/mod_mbox/tomcat-users/200601.mbox/%3c2006011 [EMAIL PROTECTED] ------------- Segue mensagem original! ------------- De: "Nehal Sangoi" <[EMAIL PROTECTED]> Data: Wed, 11 Jan 2006 19:33:10 +0530 Para: "'Nehal Sangoi'" <[EMAIL PROTECTED]>, "'Boris Unckel'" <[EMAIL PROTECTED]>, "Tomcat Users List \(E-mail\)" <users@tomcat.apache.org> Assunto: RE: unable to load classes Hi How can i change the default classloading hierarchy in Tomcat 5.5.9 ? And would that affect in my Tomcat setup anyway? Please reply to my query because i am stucked up badly at this problem. -----Original Message----- From: Nehal Sangoi [mailto:[EMAIL PROTECTED] Sent: Friday, January 06, 2006 9:58 AM To: 'Boris Unckel'; Tomcat Users List (E-mail) Subject: RE: unable to load classes Hi Boris, I will explain the issue thoroughyl, and the options i tried so far to resolve the same. Environment Details : OS : Linux Enterprise Tomcat 5.5.9 Apache HTTP Server 2.0.54 Apache and Tomcat reside on physically different server. All Tomcat applications are SiteMinder Enabled. I have one base installation of Tomcat and Multile Tomcat Instances created (each with diff user). I am not at all starting base-tomcat in my environment. My Tomcat Instances are running. Java - JDK used is 1.5 -- latest one. Now, i have several applications, which have framework in it. Technically, i don't understand what framework is as i am basically a UNIX Admin and administer Tomcat+Apache. The applications, which use framework, are using following two jarfiles. expd2util.jar jdom.jar If i keep these jarfiles into any tomcat instance's WEB-INF/lib, the application runs absolutely fine. As i mentioned earlier, the above two jarfiles would be used by many other tomcat instances/applications too. Hence, i wanted these jarfiles be kept in either base tomcat's common/lib or shared/lib and symlinks be created into every tomcat instance's shared/lib dir. Doing this, it will ease up my administration task in future. Unfortunately, its not doing. =========================================================================== Description of exact problem and options tried so far : Note : wherever i am keeping these jars, keeping only single copy of it at one particular location by discarding them out from any other classpath. I kept both the jarfiles into base-tomcat's common/lib and created symlink into the application's shared/lib folder. Ideally, this should work, because i have 3 more other jarfiles (third party) linked this way and they are working well. But tomcat is not picking up these two jarfiles from common/lib and results in Null Pointer Exception. Also, it registers nothing in catalina.out. Later, i kept both the jarfiles in shared/lib dir of that tomcat instance itself. This too did not work and resulted in No classdef found error. After that, i kept both into shared/lib of base-tomcat and again created symlinks into shared/lib of application. No luck. Again, i changed my mind and converted the jarfiles into classes and placed those classes into shared/classes folder of application. but :(( Finally, i exported the explicitly defined CLASSPATH variable into application user's profile and tried for tomcat to pick from there atleast and here too, no hope. If you read my mail closely, i have tried out almost all options. I went through the "classloader" documentation of Tomcat 5.5 on jakarta website. Theoratically, my application should work, the way i am thinking of but practically its failing. Regarding Servlet API, yes, you are right. There is default sevlet-API jar in Tomcat's Internal Classes. ================================================================== I think, i have replied to your queries. If you need any more info, please let me know. I am awaiting for a solution to come out to overcome this issue as i need to implement the same into my Production Environment. Thanks & Regards, Nehal -----Original Message----- From: Boris Unckel [mailto:[EMAIL PROTECTED] Sent: Thursday, January 05, 2006 6:02 PM To: [EMAIL PROTECTED] Subject: RE: unable to load classes > I tried keeping into shared/lib of that particular application. But it > reflects the same error again. My requirement of putting these two jars > in > shared/lib or common/lib is because i need to use them for other 20 more > applications. Hence, it would be more convenient to keep one copy and > access > by multiple applications rather copying them to every application's > WEB-INF/lib. > > Kindly, suggest some solution for this. > > But, unfortunately, i get Null Pointer Exception. And my jarfiles or > > say > > classes are not getting loaded. > > One of my jar contains servlet API in it. Just to make it clear: The classes/jars are NOT provided by you/by default through System Classpath/Classloader, are NOT provided by you/by default through the commons/lib. The classes/jars are NOT in WEB-INF/lib. There is just one copy (without any links to it) in shared/lib. Do you fullfill the mentioned conditions for servlet API too? I think the servlet API is provided by default through commons/lib. Your problem exists still if the mentioned conditions are true? Could you post the exact message/stacktrace? Regards Boris --------------------------------------------------------------------- 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]
