Discussion :

[skudersky]

Bonjour,

Je suis débutant en programmation web, et j'ai un serieux problème avec hibernate, j'ai deja un code source d'un projet qui a ete concu et qui marche sous serveur sun, sauf que moi je veux l'utiliser avec tomcat 6.0.
il y a des pages qui s'execute, là ou il ya que de l'interface, par contre dès qu'il y a apel à hibernate, ca foire:

J'ai suivi un tutorial pour configurer hibernate avec le plugin hibernate tools, ca gènere hibernate.cfg.xml avec les mapp et ses .java

Par contre dès qu'une page fait apel à hibernate j'ai ca:

GRAVE: "Servlet.service()" pour la servlet jsp a lancé une exception
java.lang.NoClassDefFoundError: Could not initialize class siroco.service.HibernateUtil


Je croit que j'ai mis tout les jar necessaire dans le lib du projet.

Qu'est ce que je doit faire, ca fait 3 jours que je suis bloqué dessus??

Merci d'avance

[we.are.the.storm]

Bonjour,

La classe siroco.service.HibernateUtil n'existe pas.
Rajoute cette classe dans tes sources Java dans le package siroco.service:

Code :

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import org.hibernate.*;
import org.hibernate.cfg.*;
 
public class HibernateUtil {
 
    private static final SessionFactory sessionFactory;
 
    static {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            sessionFactory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
 
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
 
}

[skudersky]

si si elle existe voila et ca compile bien, voila son code:

package siroco.service;

import java.util.Iterator;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.tool.hbm2ddl.SchemaExport;


public class HibernateUtil
{
private static final SessionFactory _sessionFactory;
static
{
// _sessionFactory = new
// Configuration().configure().buildSessionFactory();
Configuration config = new AnnotationConfiguration().configure();

// Don't make the class "lazy" (this is not yet possible in annotations)
for (Iterator it = config.getClassMappings(); it.hasNext()
{
PersistentClass p = (PersistentClass) it.next();
p.setProxyInterfaceName(null);
}
_sessionFactory = config.buildSessionFactory();

/* désactivation de la création de la base de données à partir des classes du domaine
SchemaExport exp = new SchemaExport(config);
exp.setOutputFile("createDatabase_deduced.sql");
exp.create(true, true);
*/
}

public static final ThreadLocal<Session> _session = new ThreadLocal<Session>();
public static final ThreadLocal<Transaction> _tx = new ThreadLocal<Transaction>();

// Session management
public static boolean isSessionOpen() throws HibernateException
{
return _session.get() != null;
}


public static Session openSession() throws HibernateException
{
Session s = getCurrentSession();
if (s == null)
{
s = _sessionFactory.openSession();
_session.set(s);
_tx.set(null);
}
else
{
throw new RuntimeException("Session was already open");
}
return s;
}


public static Session getCurrentSession() throws HibernateException
{
return _session.get();
}


public static void closeSession() throws HibernateException
{
Session s = getCurrentSession();
if (s != null)
{
_session.set(null);
_tx.set(null);
s.close();
}
else
{
throw new RuntimeException("Session was not open");
}
}


// Transaction management
public static Transaction beginTransactionOrEnlist() throws HibernateException
{
Transaction result = getCurrentTransaction();
if (result == null)
{
Session s = getCurrentSession();
if (s != null)
{
result = s.beginTransaction();
_tx.set(result);
}
else
{
throw new RuntimeException("Session was not open");
}
}
return result;
}


public static Transaction getCurrentTransaction() throws HibernateException
{
return _tx.get();
}


public static void commitTransactionIfOpen() throws HibernateException
{
Transaction tx = getCurrentTransaction();
if (tx != null)
{
_tx.set(null);
tx.commit();
}
}


public static void rollbackTransactionIfOpen() throws HibernateException
{
Transaction tx = getCurrentTransaction();
if (tx != null)
{
_tx.set(null);
tx.rollback();
}
}
}


je comprend pas pk ca marche pas, le problème c'est que ca marchait avec le serveur sun, et quand je suis passer à tomcat j'ai eu ce problème, mais attendez, la serice sur le gateau, quand je suis revenu sur le serveur sun, et ben il me genere la meme erreur

javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class siroco.service.HibernateUtil

[c_salsabil]

j'ai ce msg d'erreur:


24 mars 2010 14:47:37 net.sf.hibernate.cfg.Environment <clinit>
INFO: Hibernate 2.1.6
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Environment <clinit>
INFO: using CGLIB reflection optimizer
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration addResource
INFO: Mapping resource: TContact.hbm
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Binder bindRootClass
INFO: Mapping class: com.minosis.hibernate.TContact -> t_contact
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration doConfigure
INFO: Configured SessionFactory: null
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration secondPassCompile
INFO: processing one-to-many association mappings
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration secondPassCompile
INFO: processing one-to-one association property references
24 mars 2010 14:47:37 net.sf.hibernate.cfg.Configuration secondPassCompile
INFO: processing foreign key constraints
24 mars 2010 14:47:37 net.sf.hibernate.dialect.Dialect <init>
INFO: Using dialect: net.sf.hibernate.dialect.PostgreSQLDialect
24 mars 2010 14:47:37 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: Use outer join fetching: true
24 mars 2010 14:47:37 net.sf.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Using Hibernate built-in connection pool (not for production use!)
24 mars 2010 14:47:37 net.sf.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Hibernate connection pool size: 10
24 mars 2010 14:47:37 net.sf.hibernate.connection.DriverManagerConnectionProvider configure
INFO: using driver: org.postgresql.Driver at URL: jdbc:postgresql://127.0.0.1:5432/test_bd
24 mars 2010 14:47:37 net.sf.hibernate.connection.DriverManagerConnectionProvider configure
INFO: connection properties: {user=postgres, password=postgres}
24 mars 2010 14:47:37 net.sf.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Transaction strategy: net.sf.hibernate.transaction.JDBCTransactionFactory
24 mars 2010 14:47:37 net.sf.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: No TransactionManagerLookup configured (in JTA environment, use of process level read-write cache is not recommended)
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
ATTENTION: Could not obtain connection metadata
org.postgresql.util.PSQLException: La tentative de connexion a échoué.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:136)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:65)
at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:116)
at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30)
at org.postgresql.jdbc3.Jdbc3Connection.<init>(Jdbc3Connection.java:24)
at org.postgresql.Driver.makeConnection(Driver.java:369)
at org.postgresql.Driver.connect(Driver.java:245)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at net.sf.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:101)
at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:73)
at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1155)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:789)
at com.minosis.hibernate.HibernateUtil.<clinit>(HibernateUtil.java:11)
at Test.main(Test.java:8)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at org.postgresql.core.PGStream.ReceiveChar(PGStream.java:256)
at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:253)
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:94)
... 14 more
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: Use scrollable result sets: false
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: Use JDBC3 getGeneratedKeys(): false
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: false
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: echoing all SQL to stdout
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
24 mars 2010 14:47:38 net.sf.hibernate.cfg.SettingsFactory buildSettings
INFO: cache provider: net.sf.hibernate.cache.EhCacheProvider
24 mars 2010 14:47:38 net.sf.hibernate.cfg.Configuration configureCaches
INFO: instantiating and configuring caches
Exception in thread "main" java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.<init>(Z)V
at net.sf.cglib.core.DebuggingClassWriter.<init>(DebuggingClassWriter.java:47)
at net.sf.cglib.core.DefaultGeneratorStrategy.getClassWriter(DefaultGeneratorStrategy.java:30)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:24)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:215)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.hibernate.impl.SessionFactoryImpl.<clinit>(SessionFactoryImpl.java:236)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:791)
at com.minosis.hibernate.HibernateUtil.<clinit>(HibernateUtil.java:11)
at Test.main(Test.java:8)




voila mon fichier de configuration:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
<session-factory >

<!-- local connection properties -->
<property name="hibernate.connection.url">jdbc:postgresql://127.0.0.1:5432/test_bd</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">postgres</property>
<!-- property name="hibernate.connection.pool_size"></property -->

<!-- dialect for PostgreSQL -->
<property name="dialect">net.sf.hibernate.dialect.PostgreSQLDialect</property>

<property name="hibernate.show_sql">false</property>
<property name="hibernate.use_outer_join">true</property>
<property name="hibernate.transaction.factory_class">net.sf.hibernate.transaction.JTATransactionFactory</property>
<property name="jta.UserTransaction">java:comp/UserTransaction</property>

</session-factory>
</hibernate-configuration>

voila la classe: HibernateUtil.java


<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
<session-factory >

<!-- local connection properties -->
<property name="hibernate.connection.url">jdbc:postgresql://127.0.0.1:5432/test_bd</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">postgres</property>
<!-- property name="hibernate.connection.pool_size"></property -->

<!-- dialect for PostgreSQL -->
<property name="dialect">net.sf.hibernate.dialect.PostgreSQLDialect</property>

<property name="hibernate.show_sql">false</property>
<property name="hibernate.use_outer_join">true</property>
<property name="hibernate.transaction.factory_class">net.sf.hibernate.transaction.JTATransactionFactory</property>
<property name="jta.UserTransaction">java:comp/UserTransaction</property>

</session-factory>
</hibernate-configuration>



j'utilise eclipse
postgresql 8.3
hibernate synchronizer

pllllzzzzz aider mois.merci.