[dsurber]

I’m using Hibernate 3, Spring 1.2 to connect to MySql. I’m trying to run a simple junit test to verify my model and I’m getting the following:

org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have mor than one version of 'org.apache.commons.Log' visible, which is not allowed.

So, I checked Window>Preferences>MyEclipse>Project Capabilities and discovered that both Hibernate 3.0 and Spring 1.2 define log4j*.jar, but different versions. I removed one of them, but same error. Then I put the first one back and removed the other. Same error. Then I removed both, but now my test won’t compile because it calls BasicConfigurator.configure() and the class isn’t found.

Clearly the run path is different from the build path and log4j.jar is no longer in the build path (because I removed it from Hibernate and Spring) so things won’t compile. It is probably still in the run path so if I put it back into either Hibernate or Spring so the test will compile, there are two versions in the run path and the run fails.

I searched for log4j*.jar and found the following, all in

C:\Program Files\MyEclipse\eclipse\plugins\

com.genuitce.eclipse.springframework_4.1.1\data\1.2\lib\dependencies\log4j\log4j-1.2.9.jar
com.genuitec.eclipse.sqlexplorer_4,1.1\lib\log4j.jar
com.genuitec.eclipse.uml_4.1.1\lib\log4j-1.2.6.jar
com.genuitec.jboss.ide.eclipse.xdoclet.core_4.0.0\log4j.jar
com.genuitec.org.hibernate.eclipse_4.1.1\lib\hibernate\log4j-1.2.11.jar
com.genuitec.org.hibernate.eclipse_4.1.1\myeclipse-data\2.1\lib\log4j-1.2.8.jar
com.genuitec.org.hibernate.eclipse_4.1.1\myeclipse-data\3.0\lib\log4j-1.2.9.jar

So, how do I get just one version of log4j*.jar into both the build path and run path?

Douglas

– Was Eclipse freshly installed for MyEclipse? yes
– If not, was it upgraded to its current version using the update manager?
– Are any other external plugins installed? no
– How many plugins in the <eclipse>/plugins directory are like org.eclipse.pde.* doc.build_3.1.2, doc.user_3.1.2, junit.runtime_3.1.0, source_3.1.2
– What application server are you using? Tomcat 5.5

*** Date: Sun Apr 30 21:43:06 PDT 2006

*** System properties:
OS=Windows2000
OS version=5.0
Java version=1.5.0_06

*** MyEclipse details:
MyEclipse Enterprise Workbench

Version: 4.1.1 GA
Build id: 20060309-4.1.1-GA

*** Eclipse details:
Eclipse SDK

Version: 3.1.2
Build id: M20060118-1600

Eclipse Platform

Version: 3.1.2
Build id: M20060118-1600

Eclipse RCP

Version: 3.1.2
Build id: M20060118-1600

Eclipse Java Development Tools

Version: 3.1.2
Build id: M20060118-1600

Eclipse Plug-in Development Environment

Version: 3.1.2
Build id: M20060118-1600

Eclipse Project SDK

Version: 3.1.2
Build id: M20060118-1600

Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-launcher
C:\Program Files\eclipse\eclipse.exe
-name
Eclipse
-showsplash
600
-exitdata
9f0_48
-vm
C:\WINNT\system32\javaw.exe

[Haris Peco]

dsurber,

Please, can you explain where your junit test execute – standalone JVM or tomcat JVM
and what you do at all
I suppose :
– make project
– add hibernate and spring capabilities
– make hibernate mappings and test

but please explain your steps and send your test case if it possible

org.apache.commons.Log isn’t from log4j.jar and it doesn’t exists at all.
There is org.apache.commons.logging.Log in commons-logging.jar
org.apache.commons.logging.LogConfigurationException is from commons-logging.jar

However, your problem isn’t log4j .jar

You can have problems if you add hibernate2 and hibernate3 libraries, too

Best regards

[dsurber]

The test is executed standalone JVM. The steps you listed are mostly correct.

– make project
– add hibernate and spring capabilities
– write java code
– annotate java code with XDoclet
– run XDoclet to generate hibernate mappings
– run test as AWT app

I was unable to copy/paste the error and so I typed it by hand. You are correct about the class name, it is …commons.logging.Log. My mistake.

I’ll see if I can find a problem with commons-logging.jar. Thanks for the clue.

For what it’s worth there are 10 copies of commons-logging.jar in MyEclipse\eclipse\plugins.

Douglas

[Haris Peco]

For what it’s worth there are 10 copies of commons-logging.jar in MyEclipse\eclipse\plugins.

it isn’t important.I make tests every day with :

make project
add hibernate and/or spring capabilities
make mapping and java with ME Reverse engine
make tests

and it work fine
You needn’t find jars in ME plugins (except you make RCP app and use ME plugins 🙂 ) – you explore your project build path only

what mean ‘test like AWT app’ – GUI ?

Best regards

[dsurber]

I understand that only the build path is included. What I was pointing out was that many components include the same jar, sometimes with different versions. If one includes two components that each includes a different version of the same jar you can have problems. This is particularly the case of Hibernate and Spring. They each includes a different version of log4j. So if both components are in the build path, then there are two different versions of log4j.jar in the build path. The fact that there are many versions of various jars in the various components is some indication of the potential for this problem. In the case of commons-logging.jar it is not obvious what version(s) they are so it is not obvious if there is a potential problem.

AWT was a typo. Should have been SWT. Yes run the JUnit test as a GUI.

Douglas

[dsurber]

So, it only happens if I run my test in Swing

junit.swingui.TestRunner.run(SmokeTest.class);

It doesn’t happen if I just run it.

new SmokeTest(null).run();

I’m not going to mess with it any more.

Douglas

[Haris Peco]

Douglas,

There isn’t problem with including Spring and/or Hibernate libraries.You have some mixed library in your swing test ui

Best regards

[Author]

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