| Shared classes across webapps when running Tomcat from Eclipse [message #163524] |
Thu, 09 March 2006 23:46  |
Eclipse User |
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Originally posted by: noone.noone.org
I have Tomcat runtime installed at /opt/jakarta-tomcat-4.1.31
I also have a Dynamic Web Project ( let's call it projectW ) that uses the
above runtime. This dynamic Web Project requires / depends on classes on
another project under "Other Projects" ( let's call it projectO ).
Basically, I want classes in project0 to be shared across webapps.
Thus, in projectW's Build Path, I have projectO as a required project.
Compilation / building works fine.
Problem is when launching Tomcat, projectW's dependency on projectO is
"lost" ... or perhaps not actually defined when running the Tomcat server
within Eclipse.
In my Tomcat installation, I
changed /opt/jakarta-tomcat-4.1.31/shared/classes to a symlink so that it
points to projectO's bin/ directory. That is what is needed to be done
according to this:
http://tomcat.apache.org/tomcat-4.1-doc/class-loader-howto.h tml
.... if I want to share classes across webapps ( which I wanted to do ).
Problem is, within the "Open Launch" configuration of Tomcat in Eclipse,
$CATALINA_BASE is actually overriden to be:
-Dcatalina.base=" /home/jsalvo/workspace/.metadata/.plugins/org.eclipse.wst.se rver.core/tmp0 "
Thus, the classes in /opt/jakarta-tomcat-4.1.31/shared/classes are not
really used. So I have to manually create a shared/lib and shared/classes
under /home/jsalvo/workspace/.metadata/.plugins/org.eclipse.wst.se rver.core/tmp0.
Is there a better way ?
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| Re: Shared classes across webapps when running Tomcat from Eclipse [message #163568 is a reply to message #163524] |
Fri, 10 March 2006 14:05  |
 Larry Isaacs
Messages: 1354
Registered: July 2009 |
Senior Member |
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If you double-click on the Tomcat server in the Servers view to open its
configuration editor, you can uncheck the "Run modules directly from the
workspace (do not modify the Tomcat installation)" setting. This will
make catalina.base and catalina.home both be set to your Tomcat
installation. However, in this configuration, Eclipse kind of "owns"
your Tomcat installation. The configuration files in the subfolder of
the Servers project in your workspace are the "master" files. They will
be used to overwrite those in your Tomcat installation each time you
start the server. Otherwise, I think what you have done is the best you
can do for Tomcat 4.1.x.
However, if you can use Tomcat 5.0.x or 5.5.x, this is a configurable
setting in the catalina.properties file. Currently, Web Tools doesn't
include this file among those it imports, so you will have to copy it
manually. It will work once you do. Change the "shared.loader"
property setting as needed.
Cheers,
Larry
Jesus M. Salvo Jr. wrote:
> I have Tomcat runtime installed at /opt/jakarta-tomcat-4.1.31
>
> I also have a Dynamic Web Project ( let's call it projectW ) that uses the
> above runtime. This dynamic Web Project requires / depends on classes on
> another project under "Other Projects" ( let's call it projectO ).
> Basically, I want classes in project0 to be shared across webapps.
>
> Thus, in projectW's Build Path, I have projectO as a required project.
> Compilation / building works fine.
>
> Problem is when launching Tomcat, projectW's dependency on projectO is
> "lost" ... or perhaps not actually defined when running the Tomcat server
> within Eclipse.
>
>
> In my Tomcat installation, I
> changed /opt/jakarta-tomcat-4.1.31/shared/classes to a symlink so that it
> points to projectO's bin/ directory. That is what is needed to be done
> according to this:
>
> http://tomcat.apache.org/tomcat-4.1-doc/class-loader-howto.h tml
>
> ... if I want to share classes across webapps ( which I wanted to do ).
> Problem is, within the "Open Launch" configuration of Tomcat in Eclipse,
> $CATALINA_BASE is actually overriden to be:
>
> -Dcatalina.base=" /home/jsalvo/workspace/.metadata/.plugins/org.eclipse.wst.se rver.core/tmp0 "
>
> Thus, the classes in /opt/jakarta-tomcat-4.1.31/shared/classes are not
> really used. So I have to manually create a shared/lib and shared/classes
> under /home/jsalvo/workspace/.metadata/.plugins/org.eclipse.wst.se rver.core/tmp0.
>
> Is there a better way ?
>
>
>
>
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