Servlet Class dependency is not found at weblogic startup.

Question

I have the following ear file which includes:
web-inf\lib (contains all the needed utilities jar)
*ejb.jar
*webapp.war (The WEB-INF\lib dir inside war file contains all the needed utilities
jars.
I get the following BEA-101250 error saying that a servlet could not be loaded
because a class that it depends on is not in the classpath. But I think I place
all the needed jars in the startWebLogic.cmd file as well as in the WEB-INF\lib
of the ear and war files. However, if a classs that a servlet depends on is not
found, why doesn't weblogic simply tells us what that class is (instead of guessing
to death)? How can I find which class that the servlet depends on is not found?
Thanks.
BEA-101250
Error: [context]: Servlet class className for servlet svltName could not be loaded
because a class on which it depends was not found in the classpath classPath.\nt.
Description
[context]: Servlet class className for servlet svltName could not be loaded because
a class on which it depends was not found in the classpath classPath.\nt.
Cause
One of the classes the servlet class uses was not recognized by the Web application
classloader.
Action
Make sure the class is available either in WEB-INF/classes or WEB-INF/lib or
system classpath.

Answer 1

Hmm, do you perhaps have the prefer web-inf-classes set in weblogic.xml?
-- Rob
rock wrote:
I place all the utilties class in the top level APP-INF/lib. Same error. I installed
this application on JBoss and everything runs fine. I really don't know what
classes or jar that weblogic says that a servlet depends on.
There are only a finite number of places where you can put all the needed jars
in which that servlet depends:
1. myapp.ear/APP-INF/lib
2. myapp.ear/WEB-INF/lib
3. or put it to a directory in the ear and refer to each jars in the CLASS-PATH
line of the MANIFEST.MF file.
4. myweb.war/WEB-INF/lib
5. EJBs are in myapp.ear top directory
6. Refer to all the jars in startWebLogic.cmd script as it starts.
I still don't know what jars I am missing.
Thanks.
Rob Woollen <[email protected]> wrote:
rock wrote:
Rob,
I remove all the classpath, but when I deploy the ejb complains thatit missed
all the needed utilities class. Ok, stop there. If the utilities classes need to be seen by both the
EJBs and webapp, then placing them in WEB-INF/lib is not enough. That
makes them available only to the webapp.
If you're using 8.1, then the solution is pretty simple. Move your
utility classes into a top-level directory named APP-INF/lib
ie
ear/APP-INF/lib/utils.jar
ear/fooejb.jar
ear/fooweb.war
If you're using < 8.1, then you can still move the jars to APP-INF/lib,
but you'll need to add manifest class-path entries to the EJB and webapp.
-- Rob
I again place it on - the ear deploys fine (ejbs
and war). But the starting servlet could not loaded because it cannotfinds a
class that it depends on. I think I reference all the classes or jarsthat it
needs - so I need it to tell me which one. I don't know why weblogicmakes it
so difficult. It took me a month already and all I need to do is findthe class
that it complains about.
Rob Woollen <[email protected]> wrote:
Yes, it would be nicer if that exception had more information.
You told the web container the servlet-class in your web.xml. THe
web
container tried to load it and got a NoClassDefFoundError.
Unfortuantely that exception doesn't include much information.
NoClassDefFoundErrors are caused by something in a parent loader
depending on something in a child classloader.
Step #1 is for you to remove everything you've added to the $CLASSPATH.
If that doesn't solve your problem, post again.
-- Rob
rock wrote:
I have the following ear file which includes:
web-inf\lib (contains all the needed utilities jar)
*ejb.jar
*webapp.war (The WEB-INF\lib dir inside war file contains all the
needed
utilities
jars.
I get the following BEA-101250 error saying that a servlet could notbe loaded
because a class that it depends on is not in the classpath. But Ithink I place
all the needed jars in the startWebLogic.cmd file as well as in theWEB-INF\lib
of the ear and war files. However, if a classs that a servlet dependson is not
found, why doesn't weblogic simply tells us what that class is (insteadof guessing
to death)? How can I find which class that the servlet depends onis not found?
Thanks.
BEA-101250
Error: [context]: Servlet class className for servlet svltName couldnot be loaded
because a class on which it depends was not found in the classpathclassPath.\nt.
Description
[context]: Servlet class className for servlet svltName could notbe loaded because
a class on which it depends was not found in the classpath classPath.\nt.
Cause
One of the classes the servlet class uses was not recognized by theWeb application
classloader.
Action
Make sure the class is available either in WEB-INF/classes or WEB-INF/libor
system classpath.