Error with Hibernante

[kaya93]

I'm trying to use Hibernate (3.1) with JBoss (4.0.3) on a postrgesql database (8.1). I've got this error :

19:27:45,496 INFO [STDOUT] org.hibernate.MappingException: An AnnotationConfiguration instance is required to use
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1427)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1382)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1363)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1339)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1259)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1245)
at util.HibernateUtil.(HibernateUtil.java:20)
at site.SiteInternetManager.update(SiteInternetManager.java:35)
at site.SiteInternet.InitialiseSiteCamping3Pages(SiteInternet.java:79)
at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:52)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
....

I tried a lot of things but I don't understant why Hibernate ask
for the "AnnotationConfiguration". Can anyone help me ?
(Sorry for my english).

I join some files :

My hibernate.cfg.xml is like that
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
true
org.postgresql.Driver
jdbc:postgresql://localhost:5432/GestionClient
postgres
aurore27
org.hibernate.dialect.PostgreSQLDialect
true


update










</session-factory>

</hibernate-configuration>


My HibernateUtil.java :

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
/**
* Classe de gestion des sessions Hibernate.
*
*/
public class HibernateUtil {

// private static Log log = LogFactory.getLog(HibernateUtil.class);

private static final SessionFactory sessionFactory;

static {
try {
// Create the SessionFactory
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
//log.error("Initial SessionFactory creation failed.", ex);
//ex.printStackTrace();
throw new ExceptionInInitializerError(ex);
}
}

public static final ThreadLocal session = new ThreadLocal();

public static Session currentSession() throws HibernateException {
Session s = (Session) session.get();
// Open a new Session, if this Thread has none yet
if (s == null) {
s = sessionFactory.openSession();
session.set(s);
}
return s;
}

public static void closeSession() throws HibernateException {
Session s = (Session) session.get();
session.set(null);
if (s != null)
s.close();
}
}