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From "Christopher Williams" <ccwillia...@ntlworld.com>
Subject Re: setting external classes in the classpath
Date Fri, 05 Sep 2003 18:16:17 GMT
I guess that about a hundred people will respond to this.  Tomcat, for
reasons better known to itself, ignores your classpath.  The easiest
solution is to put your JAR in the Tomcat common\lib directory.
Alternatively, you can put them in WEB-INF\lib.

Question to any Tomcat developers reading: why does Tomcat ignore the class
path (and jre\lib\ext and all the other places that Java loads classes
from).  Having to stick JARs in multiple locations so that different Java
programs can find them is a serious headache, not to mention a
version-mismatch hazard.


----- Original Message ----- 
From: "Pradeep Gummi" <pradeep.gummi@villanova.edu>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Friday, September 05, 2003 6:30 PM
Subject: Re:setting external classes in the classpath


>
> Hi all,
> I am tring to include external classes that are needed for my servlet
> class.   I tried to modify classpath in setclasspath.bat file by
> set CLASSPATH=%JAVA_HOME%
> \lib\tools.jar;c:\mindbridge\classes\saclasses.jar
> I needed all the classes in the saclasses.jar file for my servlet. When
> i restart the tomcat server, it just shows a blank page with out
> showing the default page. Is this the right way of including classes?
> pradeep
> ----- Original Message -----
> From: "Pradeep Gummi" <pradeep.gummi@villanova.edu>
> Date: Friday, September 5, 2003 8:28 am
> Subject: Re: How to use classes from another webapp/context?
>
> > Hi Ulrich,
> > I think you should get them working by placing the classes in the
> > CATALINA_HOME/common/classes folder or the jars in the lib folder.
> > This
> > would share the classes in all web apps. There you would be giving
> > the
> > information of the catalina and system class loaders.
> >
> > grant codeBase "file:${catalina.home}/common/-" {
> >  permission java.security.AllPermission;
> > };
> > I am not sure if this is what you want. Actually I am trying to
> > use
> > classes from outside catalina.home and am trying to figure out if
> > that
> > is practically possible. Please update me if you have any solutions
> >
> > thanks
> > pradeep
> >
> > ----- Original Message -----
> > From: Ulrich Mayring <ulim@denic.de>
> > Date: Friday, September 5, 2003 4:19 am
> > Subject: How to use classes from another webapp/context?
> >
> > > Hello,
> > >
> > > I know that Tomcat has seperate classloaders for each webapp,
> > but
> > > what I
> > > would like to do is have JSPs in one webapp and the classes they
> > > use in
> > > another. I tried enabling the crossContext feature for the
> > > relevant
> > > contexts, but that didn't work, the classes weren't found.
> > >
> > > Background: we have editors, who write and deploy JSP files, and
> > > programmers, who write and deploy classes used by JSP files. I
> > > would
> > > like to have the editors manage their webapps with the JSP files
> > > via the
> > > HTML manager and the programmers to do the same for their webapps.
> > >
> > > I know that I could put the classes under the shared directory,
> > > but then
> > > they would not be in a webapp anymore and thus management via
> > the
> > > HTML
> > > manager would not work anymore. Tomcat would need to be
> > restarted
> > > on
> > > every change.
> > >
> > > I could also have the programmers give JAR files to the editors
> > > and have
> > > the editors deploy them with their webapps, but then the classes
> > > would
> > > be duplicated across many webapps and also I don't want the
> > > editors
> > > handling JAR files.
> > >
> > > Is there any solution?
> > >
> > > Thanks in advance for any pointers,
> > >
> > > Ulrich
> > >
> > >
> > >
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