2004-11-08 16:06:55 StandardContext[]: Servlet threw load() exception
javax.servlet.ServletException: Wrapper cannot find servlet class
dsi.app.tomcat.DCGIServlet or a class it depends on
at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:89
1)
at
org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:823)
at
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:
3422)
...
----- Root Cause -----
java.lang.ClassNotFoundException: dsi.app.tomcat.DCGIServlet
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1443)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1289)
at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:88
5)
at
org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:823)
at
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:
3422)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:3623)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1188)
at
org.apache.catalina.core.StandardHost.start(StandardHost.java:754)
I thought I was being careful. The only non-core library needed to compile
it needed was the catalina.jar, which is in that directory. And it was the
exact same code. I tried for hours to figure it out, and then I put it in
common and, bang, it worked. The only change between the original tomcat
code and mine was the package. And since it worked when I put it in common,
the web.xml information must have been correct. The invoker servlet was off
the whole time.
> -----Original Message-----
> From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, November 09, 2004 8:52 AM
> To: Tomcat Users List
> Subject: RE: CGI ...yeah, I know (Tomcat 4.1.29)
>
>
>
> Hi,
>
> >I still have one question though,
> >
> >How come when I copied the source from 4.1.31 directly into my own
> class
> >(with no dependencies) I got ClassNotFound exceptions and it
> would not
> run
>
> Was it really a CNFE or a NoClassDefFoundError?
>
> You have to be very careful with dependencies once you start
> putting stuff in shared, common, and server classloader
> repositories. That's why I recommend never doing that, and
> just keeping everything in your WEB-INF/lib directory.
>
> The reason you must be very careful is that class com.foo
> loaded from shared/lib is not the same as com.foo loaded from
> common/lib or WEB-INF/lib. A class is unique within its
> classloader, and these are distinct classloaders. This leads
> to problems with applications that package classes such that
> some classes are in more than one repository, or that require
> upwards (common/lib needing WEB-INF/lib for example)
> repository lookups. No-no.
>
> Yoav
>
>
>
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