Deploying shared .jar 's 2006-12-11 - By David Kerber
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olivier nouguier wrote:
> hi,
> By http://tomcat.apache.org/tomcat-5 (See http://cat-5.ora-code.com).5-doc/class-loader-howto.html
> Shared is the parent classloader of webapp.
>
> AFAIK the consequence of this in that a class loaded from webapp
> classloader
> can see other classes (whenever they come from shared, webapp or
> common),
> but the reverse is not true, and could lead to ClassNotDef or
> ClassNotFound
> exeption unless some classloader hack are performed ...
This sentence:
"For classes and resources that must be shared across all web
applications, place unpacked classes and resources under
|$CATALINA_BASE/shared/classes|, or place JAR files containing those
classes and resources under |$CATALINA_BASE/shared/lib|."
is exactly what I'm referring to, but I've never gotten this to work.
My webapps can't see classes in the .jar that is in the shared/lib
folder; I get the ClassNotFound errors when I try.
>
>
>
> On 12/11/06, David Kerber <dckerber@(protected)> wrote:
>
>>
>> From what I've read in the Tomcat 5.5 docs, I should be able to deploy
>> a .jar that is shared across multiple webapps on Windows by putting it
>> in the (tomcat)/shared/lib folder, but I've never gotten that to work.
>> I've always had to put that jar in the web-inf/lib folder of each of the
>> webapps that need it, in order for them to be able to use it. Why is
>> that? Is there something I'm missing about deploying shared jars? The
>> wasted disk space doesn't matter, but the hassle of putting the same
>> .jar file in multiple different places does...
>>
>> Any help or explanations would be appreciated!
>> Dave
>>
>>
>>
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>
>
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