hibernate.cfg.xml not found

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

Hi!

Hibernate does not find its configuration file when put in /WEB-INF/classes, neither does it find it in /WEB-INF/ or /.

The following does work as a workaround when putting it in /:

URL hib = new URL("http://localhost:8080/hibernate.cfg.xml");
Configuration config = new Configuration().configure(hib);

Curiously it does find the referenced .hbm.xml files in /WEB-INF/classes....?

I run JettyPlus if this should matter...

emmanuel · **Posted:** Thu Mar 25, 2004 6:59 pm

the config file must be seen by the classloader loading Hibernate

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

Well, i found out that Environment.class.getResourceAsStream() in Configuration().configure() returns null. I don't know why it does. getClass().getResourceAsStream() in my own class does return the stream (?!).

emmanuel · **Posted:** Fri Mar 26, 2004 4:33 am

Again certainly a CL problem

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

And what am I going to do against it?

awellman · **Joined:** Fri Mar 26, 2004 10:55 am **Posts:** 2

I am having the same problem. It is my understanding from reading the documentation that Hibernate should automatically find a file called hibernate.cfg.xml that is in the classpath. If I switch to the properties file, hibernate.properties, and register my persistent classes automatically, then it works. Why does it find one file and not the other?

Regards,
awellman

christian · **Posted:** Fri Mar 26, 2004 11:03 am

Hibernate simply calls getResourceAsStream("/hibernate.cfg.xml"), this is executed by the classloader that loaded Hibernate (the JAR, usually). There's not much we can do if this does not work in your classloader hierarchy/environment.

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

But what can be reasons for it to fail?

class Test
{
public void go()
{
new Configuration.configuration(); // fails (stream == null)
getClass().getResourceAsStream("/hibernate.cfg.xml"); // works
}
}

??

christian · **Posted:** Fri Mar 26, 2004 11:17 am

It works for thousands of people too. I can't help you here, it's your environment. Remember that getClass() is not the same as in Hibernate Environment.class.etc, it might be a different classloader.

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

christian wrote:

It works for thousands of people too. I can't help you here, it's your environment. Remember that getClass() is not the same as in Hibernate Environment.class.etc, it might be a different classloader.

Could you be a little bit more precise on what you mean by 'my environment'? Both runs in 1 VM - isn't it the same classloader in both cases as well?

christian · **Posted:** Fri Mar 26, 2004 12:20 pm

No, please read up on the Java classloader system.

gpani · **Posted:** Fri Mar 26, 2004 12:25 pm

Could you be a little bit more precise on what you mean by 'my environment'? Both runs in 1 VM - isn't it the same classloader in both cases as well?[/quote]

I am using Resin 2.1.12 with Hibernate 2.1 on SAPDB 7.4

Here is how I have my environment setup.

Location of Hibernate configuration files:

Here is my HibernateManager code that loads the confirguration successfully.

Code:

static
  {
    try
    {
      /**
       *  File name need not be specified here. By default hibernate.cfg.xml is chosen.
       *  However, if the file name is changed in the application, it will need to
       *  be modified here
       */
      SessionFactory sessionFactory = new Configuration().configure("/hibernate-sapdb.cfg.xml").buildSessionFactory();
    }
    catch (HibernateException e)
    {
      logger.debug("HibernateException building SessionFactory: " + e.getMessage());
      throw new RuntimeException("HibernateException building SessionFactory: " + e.getMessage(), e);
    }
  }

Hope that helps.

jfifield · **Joined:** Tue Aug 26, 2003 3:09 pm **Posts:** 58

I may be mistaken, but it could be related to [urlhttp://opensource.atlassian.com/projects/hibernate/browse/HB-576]HB-576[/url]?

You could try something like this and see if it makes a difference:

Code:

URL url = Thread.currentThread().getContextClassLoader().getResource("/hibernate-sapdb.cfg.xml");
SessionFactory sessionFactory = new Configuration().configure(url).buildSessionFactory(); 

tcn · **Joined:** Tue Mar 23, 2004 4:18 pm **Posts:** 45

jfifield wrote:

I may be mistaken, but it could be related to [urlhttp://opensource.atlassian.com/projects/hibernate/browse/HB-576]HB-576[/url]?

You could try something like this and see if it makes a difference:

Code:

URL url = Thread.currentThread().getContextClassLoader().getResource("/hibernate-sapdb.cfg.xml");
SessionFactory sessionFactory = new Configuration().configure(url).buildSessionFactory(); 

NullPointerException :-(

gpani · **Posted:** Fri Mar 26, 2004 4:05 pm

Is there any particular reason you are using the URL object? If you can't find the file in your path somehow, try creating a java.io.File object and using that. I tried that as well and it worked for me.