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From Violeta Georgieva <miles...@gmail.com>
Subject Re: Dependencies on extensions functionality
Date Sun, 05 Feb 2012 15:03:39 GMT
Hi,

As I wrote I'm placing the extension jar in "C:\apache-tomcat-7.0.25\ext".
I tried the following: I specified "C:\apache-tomcat-7.0.25\lib" as value
for "catalina.ext.dirs" property and now the web application is working.

But then I have two questions:

- Do we need "catalina.ext.dirs" at all if we can use only Tomcat's
classpath dirs? Let's look through them instead of introducing additional
property.
- Does this mean that we can use only Tomcat's classpath dirs and we cannot
specify a custom directory for these extensions?

Thanks
Violeta

2012/2/5 Pid <pid@pidster.com>

> On 04/02/2012 21:02, Violeta Georgieva wrote:
> > Hi,
> >
> > Here is how one can reproduce the scenario:
> >
> > 1. Start Tomcat
> > 2. Put attached war in webapps folder
> > 3. In the console the following error message is printed:
>
> In the example above, where have you placed the extension?  Is it in one
> of Tomcat's classpath directories?
>
>
> p
>
> > INFO: Deploying web application archive
> > C:\apache-tomcat-7.0.25\webapps\test-web-app.war
> > Feb 4, 2012 10:41:44 PM org.apache.catalina.util.ExtensionValidator
> > validateManifestResources
> > INFO: ExtensionValidator[/test-web-app][Web Application Manifest]:
> > Required extension [test-jar] not found.
> > Feb 4, 2012 10:41:44 PM org.apache.catalina.util.ExtensionValidator
> > validateManifestResources
> > INFO: ExtensionValidator[/test-web-app]: Failure to find [1] required
> > extension(s).
> > Feb 4, 2012 10:41:44 PM org.apache.catalina.core.StandardContext
> > startInternal
> > SEVERE: Error getConfigured
> > Feb 4, 2012 10:41:44 PM org.apache.catalina.core.StandardContext
> > startInternal
> > SEVERE: Context [/test-web-app] startup failed due to previous errors
> >
> > 4. Stop Tomcat
> > 5. Create folder - C:\apache-tomcat-7.0.25\ext
> > 6. Put the attached jar file in the folder created on step 5
> > 7. Start Tomcat with additional VM argument
> > -Dcatalina.ext.dirs=C:/apache-tomcat-7.0.25/ext
> > 8. This time the application is deployed successfully.
> > 9. Request http://localhost:8080/test-web-app/TestServlet
> > 10. Internal Server Error is returned with the following Exception:
> >
> >
> > java.lang.ClassNotFoundException: test.TestExtension
> >
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1701)
> >
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1546)
> >       test.TestServlet.doGet(TestServlet.java:28)
> >       javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
> >       javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> >
> > I did not change any other Tomcat configuration so it is running with
> > defaults.
> >
> > The scenario is that TestServlet (in war file) instantiates
> > TestExtension (in jar file, placed in the ext directory).
> >
> > Regards
> > Violeta
> > 2012/2/4 Christopher Schultz <chris@christopherschultz.net
> > <mailto:chris@christopherschultz.net>>
> >
> > Violetta,
> >
> > On 2/3/12 8:25 AM, Violeta Georgieva wrote:
> >> I have a web application that specifies in the Manifest that wants
> >> to use an extension.
> >
> >> I specify "catalina.ext.dirs" to point to the directory where I
> >> placed my extensions jar files.
> >
> > What is the value of the catalina.ext.dirs system property? Where did
> > you set it? Can you verify that it is set when the JVM actually starts?
> >
> > What files are in the directory or directories specified by
> > catalina.ext.dir?
> >
> >> Unfortunately when I request my application I'm receiving
> >> "ClassNotFoundException".
> >
> > What class cannot be found? Is it found in any of the JAR files you
> > have in your catalina.ext.dir (which is, of course, the whole point of
> > the feature)?
> >
> >> I verified that
> >
> >> ExtensionValidator.validateApplication() succeeded to find the
> >> extension jar file.
> >
> > How did you verify this? Are there logs that suggest your JAR file is
> > being scanned? Please provide them.
> >
> >> What could be the problem? May be I'm missing some configuration?
> >
> > You might be, but you haven't provided any configuration to us, so we
> > don't know if you're missing something. Clearly, something is
> > misconfigured.
> >
> > -chris
> >
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> >
> >
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