Problem beim initialisieren des Caches

[Nemesys]

Hey zusammen,

ich habe seit langem wieder ein Java-Projekt gestartet und wollte nun Hibernate integrieren. Das hat soweit geklappt. Nun wollte ich aber das Caching testen. Sobald ich den Test ausführe erhalte ich folgenden Fehler:

Initial SessionFactory creation failed.org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.spi.CacheImplementor]
Exception in thread "main" java.lang.ExceptionInInitializerError
	at hibernate.HibernateUtil.buildSessionFactory(HibernateUtil.java:18)
	at hibernate.HibernateUtil.<clinit>(HibernateUtil.java:8)
	at TestHibernateEhcache.main(TestHibernateEhcache.java:12)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.spi.CacheImplementor]
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:187)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:151)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:132)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:264)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1790)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1861)
	at hibernate.HibernateUtil.buildSessionFactory(HibernateUtil.java:13)
	... 2 more
Caused by: org.hibernate.cache.CacheException: net.sf.ehcache.CacheException: Error configuring from null. Initial cause was null
	at org.hibernate.cache.ehcache.EhCacheRegionFactory.start(EhCacheRegionFactory.java:110)
	at org.hibernate.internal.CacheImpl.<init>(CacheImpl.java:70)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:40)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:35)
	at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService(SessionFactoryServiceRegistryImpl.java:91)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:177)
	... 8 more
Caused by: net.sf.ehcache.CacheException: Error configuring from null. Initial cause was null
	at net.sf.ehcache.config.ConfigurationFactory.parseConfiguration(ConfigurationFactory.java:103)
	at org.hibernate.cache.ehcache.internal.util.HibernateUtil.loadAndCorrectConfiguration(HibernateUtil.java:63)
	at org.hibernate.cache.ehcache.EhCacheRegionFactory.start(EhCacheRegionFactory.java:93)
	... 13 more
Caused by: java.lang.NullPointerException
	at net.sf.ehcache.config.ConfigurationFactory.parseConfiguration(ConfigurationFactory.java:100)
	... 15 more

Hier mein Test:

import hibernate.HibernateUtil;
import org.hibernate.Session;
import org.junit.Test;
import user_management.Accounts;


public class TestHibernateEhcache {   
    
    @Test
    public static void main(String[] args){
        //Open the hibernate session
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();

        Session sessionTemp = HibernateUtil.getSessionFactory().openSession();
        sessionTemp.beginTransaction();
        try
        {
            //fetch the department entity from database first time
            Accounts acc = (Accounts) session.load(Accounts.class, new Integer(1));
            System.out.println(acc.getName());

            //fetch the department entity again
            acc = (Accounts) session.load(Accounts.class, new Integer(1));
            System.out.println(acc.getName());

            acc = (Accounts) sessionTemp.load(Accounts.class, new Integer(1));
            System.out.println(acc.getName());
        }
        finally
        {
            session.getTransaction().commit();
            HibernateUtil.shutdown();

            sessionTemp.getTransaction().commit();
            HibernateUtil.shutdown();
        }
    }
}

Hier die Einstellungen von Hibernate:

<?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>
    <!--  Database connection settings  -->
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/portal2?zeroDateTimeBehavior=convertToNull</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <!--  JDBC connection pool (use the built-in)  -->
    <property name="connection.pool_size">1</property>
    <!-- SQL dialect -->
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <!-- Cache Configurations -->
    <property name="hibernate.cache.region.factory_class">org.hibernate.cache.EhCacheRegionFactory</property>
    <property name="net.sf.ehcache.configurationResourceName">ehcache.xml</property>
    <property name="hibernate.cache.use_query_cache">true</property>
    <!--  Echo all executed SQL to stdout  -->
    <property name="show_sql">true</property>
    <!--  Drop and re-create the database schema on startup  -->
    <property name="hbm2ddl.auto">create</property>
    <!-- mapping entities -->
    <mapping class="user_management.Accounts"/>
  </session-factory>
</hibernate-configuration>

Was habe ich übersehen?

Beim Objekt Accounts habe ich übrigens keine xml-Datei fürs Mapping erstellen lassen. Das läuft alles über Annotationen. Was ist hier das "Best Practice"?

VG Matthias