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Posted to ojb-user@db.apache.org by Martin Davidsson <mh...@ncsu.edu> on 2004/07/07 20:52:31 UTC
Compiling without J2EE
Is it possible to compile OJB without using the j2ee.jar? I'm trying to
use a custom version of OJB with a Tomcat servlet but it always throws
NoClassDefFound errors. I think it might because I don't include
j2ee.jar in the Tomcat classpath. When I do, however, I get this
instead:
WebappClassLoader:
validateJarFile(/home/local/mhdavids/Scoperto/tomcat/webapps/scoperto/
WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec 2.3, section
9.7.2. Offending class: javax/servlet/Servlet.class
Removing servlet.jar (which I've heard suggested elsewhere) isn't an
option I'm afraid. I was hoping to cut any J2EE dependancies instead.
Thanks
-- Martin
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Re: Compiling without J2EE
Posted by Steve Clark <sc...@euler.cr.usgs.gov>.
What version of OJB are you using? What classes are used at the
indicated lines? The lines don't match up with anything interesting
in the various sources I have.
org.apache.ojb.broker.util.BrokerHelper.crossCheckPBKey(BrokerHelper.java:123)
org.apache.ojb.odmg.OJB.(OJB.java:68)
--
Steve Clark
Technology Applications Team
Natural Resources Research Center/USGS
sclark@support.tat.fws.gov
(970)226-9291
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Re: Compiling without J2EE
Posted by Thomas Dudziak <to...@first.fhg.de>.
Martin Davidsson wrote:
> I hate to spam, but I should include this too. I seem to get it more
> often than the other stack trace. Don't know if it helps or not :(
>
> java.lang.NoClassDefFoundError
> at org.apache.ojb.odmg.OJB.(OJB.java:68)
> at org.apache.ojb.odmg.OJB.getInstance(OJB.java:76)
As Steve pointed out, you should *not* include the j2ee jar in the lib
folder of your webapp.
The above error is more likely to be caused by something different
because the ODMG impl is not dependent upon the Servlet spec nor J2EE AFAIK.
Also, if you're using Eclipse, then you can use the Sysdeo Tomcat Plugin
to start Tomcat in Debug mode, in which case you simple add an Exception
Breakpoint for NoClassDefFoundError. This will show you where the
exception is thrown and what class is not found (IDEA will have
something alike, I'm sure).
Tom
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Re: Compiling without J2EE
Posted by Martin Davidsson <mh...@ncsu.edu>.
I hate to spam, but I should include this too. I seem to get it more
often than the other stack trace. Don't know if it helps or not :(
java.lang.NoClassDefFoundError
at org.apache.ojb.odmg.OJB.(OJB.java:68)
at org.apache.ojb.odmg.OJB.getInstance(OJB.java:76)
On Jul 7, 2004, at 3:12 PM, Martin Davidsson wrote:
> Thanks Steve.
>
> The NoClassDefFound doesn't refer to anything. Here's part of the
> Tomcat Error Report:
>
> java.lang.NoClassDefFoundError
> at
> org.apache.ojb.broker.util.BrokerHelper.crossCheckPBKey(BrokerHelper.ja
> va:123)
> at
> org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.createPe
> rsistenceBroker(PersistenceBrokerFactoryDefaultImpl.java:91)
> at
> org.apache.ojb.broker.PersistenceBrokerFactory.createPersistenceBroker(
> PersistenceBrokerFactory.java:86)
> at org.apache.ojb.odmg.DatabaseImpl.open(DatabaseImpl.java:121)
>
> Thanks again
>
> -- Martin
>
> On Jul 7, 2004, at 3:08 PM, Steve Clark wrote:
>
>> You need to compile with j2ee.jar or the equivalent, but don't install
>> that jar (or servlet.jar or any of that ilk) with your servlet -
>> Tomcat provides its own equivalent at runtime. This is the way the
>> Servlet spec works: the container is supposed to provide the classes
>> in servlet.jar, and individual servlets or webapps cannot.
>>
>> What class does the NoClassDefFound refer to?
>>
>> --
>> Steve Clark
>>
>> Technology Applications Team
>> Natural Resources Research Center/USGS
>> sclark@support.tat.fws.gov
>> (970)226-9291
>>
>>
>>>>>>> Martin Davidsson writes:
>>
>> Martin> Is it possible to compile OJB without using the j2ee.jar?
>> Martin> I'm trying to use a custom version of OJB with a Tomcat
>> Martin> servlet but it always throws NoClassDefFound errors. I
>> Martin> think it might because I don't include j2ee.jar in the
>> Martin> Tomcat classpath. When I do, however, I get this instead:
>>
>> Martin> WebappClassLoader:
>> Martin>
>> validateJarFile(/home/local/mhdavids/Scoperto/tomcat/webapps/
>> scoperto/
>> Martin> WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec
>> Martin> 2.3, section 9.7.2. Offending class:
>> Martin> javax/servlet/Servlet.class
>>
>> Martin> Removing servlet.jar (which I've heard suggested
>> Martin> elsewhere) isn't an option I'm afraid. I was hoping to cut
>> Martin> any J2EE dependancies instead. Thanks
>>
>> Martin> -- Martin
>>
>>
>>
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>> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
>> For additional commands, e-mail: ojb-user-help@db.apache.org
>>
>
>
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Re: Compiling without J2EE
Posted by Martin Davidsson <mh...@ncsu.edu>.
Thanks Steve.
The NoClassDefFound doesn't refer to anything. Here's part of the
Tomcat Error Report:
java.lang.NoClassDefFoundError
at
org.apache.ojb.broker.util.BrokerHelper.crossCheckPBKey(BrokerHelper.jav
a:123)
at
org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.createPer
sistenceBroker(PersistenceBrokerFactoryDefaultImpl.java:91)
at
org.apache.ojb.broker.PersistenceBrokerFactory.createPersistenceBroker(P
ersistenceBrokerFactory.java:86)
at org.apache.ojb.odmg.DatabaseImpl.open(DatabaseImpl.java:121)
Thanks again
-- Martin
On Jul 7, 2004, at 3:08 PM, Steve Clark wrote:
> You need to compile with j2ee.jar or the equivalent, but don't install
> that jar (or servlet.jar or any of that ilk) with your servlet -
> Tomcat provides its own equivalent at runtime. This is the way the
> Servlet spec works: the container is supposed to provide the classes
> in servlet.jar, and individual servlets or webapps cannot.
>
> What class does the NoClassDefFound refer to?
>
> --
> Steve Clark
>
> Technology Applications Team
> Natural Resources Research Center/USGS
> sclark@support.tat.fws.gov
> (970)226-9291
>
>
>>>>>> Martin Davidsson writes:
>
> Martin> Is it possible to compile OJB without using the j2ee.jar?
> Martin> I'm trying to use a custom version of OJB with a Tomcat
> Martin> servlet but it always throws NoClassDefFound errors. I
> Martin> think it might because I don't include j2ee.jar in the
> Martin> Tomcat classpath. When I do, however, I get this instead:
>
> Martin> WebappClassLoader:
> Martin>
> validateJarFile(/home/local/mhdavids/Scoperto/tomcat/webapps/scoperto/
> Martin> WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec
> Martin> 2.3, section 9.7.2. Offending class:
> Martin> javax/servlet/Servlet.class
>
> Martin> Removing servlet.jar (which I've heard suggested
> Martin> elsewhere) isn't an option I'm afraid. I was hoping to cut
> Martin> any J2EE dependancies instead. Thanks
>
> Martin> -- Martin
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
---------------------------------------------------------------------
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Re: Compiling without J2EE
Posted by Steve Clark <sc...@euler.cr.usgs.gov>.
You need to compile with j2ee.jar or the equivalent, but don't install
that jar (or servlet.jar or any of that ilk) with your servlet -
Tomcat provides its own equivalent at runtime. This is the way the
Servlet spec works: the container is supposed to provide the classes
in servlet.jar, and individual servlets or webapps cannot.
What class does the NoClassDefFound refer to?
--
Steve Clark
Technology Applications Team
Natural Resources Research Center/USGS
sclark@support.tat.fws.gov
(970)226-9291
>>>>> Martin Davidsson writes:
Martin> Is it possible to compile OJB without using the j2ee.jar?
Martin> I'm trying to use a custom version of OJB with a Tomcat
Martin> servlet but it always throws NoClassDefFound errors. I
Martin> think it might because I don't include j2ee.jar in the
Martin> Tomcat classpath. When I do, however, I get this instead:
Martin> WebappClassLoader:
Martin> validateJarFile(/home/local/mhdavids/Scoperto/tomcat/webapps/scoperto/
Martin> WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec
Martin> 2.3, section 9.7.2. Offending class:
Martin> javax/servlet/Servlet.class
Martin> Removing servlet.jar (which I've heard suggested
Martin> elsewhere) isn't an option I'm afraid. I was hoping to cut
Martin> any J2EE dependancies instead. Thanks
Martin> -- Martin
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