[Débutante] Erreur: java.lang.ExceptionInInitializerError
Bonjour,
j'essaye de réaliser un helloworld avec eclipse, hibernate 3.2, et mysql.
J'ai une erreur que j'arrive pas à résoudre. la voici:
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| Exception in thread "main" java.lang.ExceptionInInitializerError
at com.hello.HibernateUtil.<clinit>(HibernateUtil.java:17)
at com.hello.HelloWorld.main(HelloWorld.java:13)
Caused by: org.hibernate.MappingNotFoundException: resource: com.hello/Messages.hbm.xml not found
at org.hibernate.cfg.Configuration.addResource(Configuration.java:517)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1511)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1479)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1458)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1432)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1352)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1338)
at com.hello.HibernateUtil.<clinit>(HibernateUtil.java:15)
... 1 more |
J'ai cette erreur alors que mon fichier Messages.hbm.xml est dans le dossier sources
code de HibernateUtil:
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| package com.hello;
import org.hibernate.*;
import org.hibernate.cfg.*;
/**
* Startup Hibernate and provide access to the singleton SessionFactory
*/
public class HibernateUtil {
private static SessionFactory sessionFactory;
static {
try {
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
// Alternatively, we could look up in JNDI here
return sessionFactory;
}
public static void shutdown() {
// Close caches and connection pools
getSessionFactory().close();
}
} |
code de HelloWorld:
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| package com.hello;
import org.hibernate.*;
import java.util.*;
public class HelloWorld {
public static void main(String[] args) {
// ############################################################################
// First unit of work
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
Message message = new Message("Hello World");
session.save(message);
tx.commit();
session.close();
// ############################################################################
// Second unit of work
Session secondSession = HibernateUtil.getSessionFactory().openSession();
Transaction secondTransaction = secondSession.beginTransaction();
List messages =
secondSession.createQuery("from Message m order by m.text asc").list();
System.out.println( messages.size() + " message(s) found:" );
for ( Iterator iter = messages.iterator(); iter.hasNext(); ) {
Message loadedMsg = (Message) iter.next();
System.out.println( loadedMsg.getText() );
}
secondTransaction.commit();
secondSession.close();
// ############################################################################
// Third unit of work
Session thirdSession = HibernateUtil.getSessionFactory().openSession();
Transaction thirdTransaction = thirdSession.beginTransaction();
// message.getId() holds the identifier value of the first message
Message loadedMessage = (Message) thirdSession.get( Message.class, message.getId());
loadedMessage.setText( "Greetings Earthling" );
loadedMessage.setNextMessage(
new Message( "Take me to your leader (please)" )
);
thirdTransaction.commit();
thirdSession.close();
// ############################################################################
// Final unit of work (just repeat the query)
// TODO: You can move this query into the thirdSession before the commit, makes more sense!
Session fourthSession = HibernateUtil.getSessionFactory().openSession();
Transaction fourthTransaction = fourthSession.beginTransaction();
messages =
fourthSession.createQuery("from Message m order by m.text asc").list();
System.out.println( messages.size() + " message(s) found:" );
for ( Iterator iter = messages.iterator(); iter.hasNext(); ) {
Message loadedMsg = (Message) iter.next();
System.out.println( loadedMsg.getText() );
}
fourthTransaction.commit();
fourthSession.close();
// Shutting down the application
HibernateUtil.shutdown();
}
} |
Est ce que quelqu'un a une idée.
Merci d'avance.
