Hibernate and DOM4J's SAXReader

ravalox · **Joined:** Thu Jan 22, 2004 2:42 pm **Posts:** 24

Hey I have an installation that I have configured to use hibernate but I am having what I believe to be a configuration issue. When I run tomcat the logs reflect a ClassNotFoundException within hibernate when attempting to utilize org/dom4j/io/SAXReader in the XMLHelper class. in other words I get this output:

java.lang.NoClassDefFoundError: org/dom4j/io/SAXReader
at net.sf.hibernate.util.XMLHelper.createSAXReader(XMLHelper.java:15)

I have tried everything and no change in configuration seems to trick hibernate into working. There is a dom4j in the class path and I can use Dom4j objects in my code freely. So has anyone ever encountered this before?

michael · **Posted:** Wed Feb 04, 2004 5:12 pm

Probably a wrong jar version? Are you using the one distributed with hibernate?

ravalox · **Joined:** Thu Jan 22, 2004 2:42 pm **Posts:** 24

Yes, that was one of my first attempts at a solution. I am using hibernate 2.0.2 and dare not go above that as that is the version on which the project is built. I have also looked at the DOM4J jar I have and SAXReader is indeed there where it should be.

michael · **Posted:** Wed Feb 04, 2004 5:17 pm

very strange ... and you can access other classes in the jar from your code?

ravalox · **Joined:** Thu Jan 22, 2004 2:42 pm **Posts:** 24

Yes, my code can address everything normally. It just seems that the hibernate jar itself cannot see the dom4j. I have tried everything short of fusing the two jars into one to make it understand.

michael · **Posted:** Wed Feb 04, 2004 5:58 pm

Where have you put the libs? Try putting everything into WEB-INF/lib except database driver jars ...

ravalox · **Joined:** Thu Jan 22, 2004 2:42 pm **Posts:** 24

I just tried that advice, it still throws the same exception. I wish I could say it gave me more hints but I have no new information about it really.

michael · **Posted:** Wed Feb 04, 2004 6:11 pm

Well I am really running out of jdeas, too ... you will have to experiment, try moving the jars to differnet tomcat library folders, use a different version at least for testing ...

emmanuel · **Posted:** Wed Feb 04, 2004 8:05 pm

Strange, be sure to use the lastest version of your Tomcat family

ravalox · **Joined:** Thu Jan 22, 2004 2:42 pm **Posts:** 24

thanks for all your help guys, the final resolution was the while it was in my classpath, dom4j.jar was not physically present in the same directory with hibernate2.jar. Silly, but that was the cause.