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Answer 1

+1 A:

I think that your class is on the classpath but the ClassLoader runs into an error when trying to load the class (as hinted by the message). This typically happens when the class has a static block or static members which use a Class that can't found by the ClassLoader.

In the particular case of this generated HibernateUtil.java, it should have something like this:

static {
  URL myurl = Thread.currentThread().getContextClassLoader().getResource("/some/path/to/hibernate.cfg.xml");
  sessionFactory = new Configuration().configure(myurl).buildSessionFactory();
}

So:

Make sure the hibernate configuration file is present were expected.
Make sure the Hibernate jars are present on the class path of the target machine.
Maybe add a try { ... } catch (Throwable t) { ... } in your static block to log the error.

Pascal Thivent 2010-08-17 14:42:39

Answer 2

+1 A:

You should read the user documentation that comes with the Hibernate distribution. The Hibernate JARs have a bunch of runtime dependencies on other JARs, such as some of the Apache Commons ones, and the "slf4j" JARs for example. If those are missing at runtime Hibernate will not function even if all the Hibernate JARs are in the right place.

Jim Tough 2010-08-17 23:21:05

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