[debutant] Class [org.apache.derby.jdbc.ClientDriver] not found.

**linuxien_tun** · 08/01/2009, 00h12

a chaque fois que je lance l'application j'ai cette erreur

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run:
[TopLink Info]: 2009.01.07 11:42:13.921--ServerSession(12115695)--TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))
Exception in thread "main" Local Exception Stack: 
Exception [TOPLINK-4003] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Exception Description: Configuration error.  Class [org.apache.derby.jdbc.ClientDriver] not found.
        at oracle.toplink.essentials.exceptions.DatabaseException.configurationErrorClassNotFound(DatabaseException.java:101)
        at oracle.toplink.essentials.sessions.DefaultConnector.loadDriver(DefaultConnector.java:183)
        at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:98)
        at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:184)
        at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582)
        at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:280)
        at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:229)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:93)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:126)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:120)
        at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:91)
        at gestionpersonne.PersonneJpaController.getEntityManager(PersonneJpaController.java:28)
        at gestionpersonne.PersonneJpaController.create(PersonneJpaController.java:34)
        at gestionpersonne.Main.main(Main.java:20)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)

persistence.xml :

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<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="gestionPersonnePU" transaction-type="RESOURCE_LOCAL">
    <provider>oracle.toplink.essentials.PersistenceProvider</provider>
    <class>gestionpersonne.Personne</class>
    <properties>
      <property name="toplink.jdbc.user" value="linuxien"/>
      <property name="toplink.jdbc.password" value="2020"/>
      <property name="toplink.jdbc.url" value="jdbc:derby://localhost:1527/GPersonne_db"/>
      <property name="toplink.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
      <property name="toplink.ddl-generation" value="create-tables"/>
    </properties>
  </persistence-unit>
</persistence>

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package gestionpersonne;
 
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
 
/**
 *
 * @author linuxien
 */
@Entity
public class Personne implements Serializable {
 
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String nom;
 
    public Personne() {
    }
 
    public Personne(String nom) {
        this.nom = nom;
    }
 
    /**
     * Get the value of nom
     *
     * @return the value of nom
     */
    public String getNom() {
        return nom;
    }
 
    /**
     * Set the value of nom
     *
     * @param nom new value of nom
     */
    public void setNom(String nom) {
        this.nom = nom;
    }
 
    public Long getId() {
        return id;
    }
 
    public void setId(Long id) {
        this.id = id;
    }
 
 
 
 
 
 
 
 
 
    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }
 
    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Personne)) {
            return false;
        }
        Personne other = (Personne) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }
 
    @Override
    public String toString() {
        return "gestionpersonne.Personne[id=" + id + "]";
    }
}

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package gestionpersonne;
 
import gestionpersonne.exceptions.NonexistentEntityException;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
import javax.persistence.EntityNotFoundException;
 
/**
 *
 * @author linxien
 */
public class PersonneJpaController {
 
    public PersonneJpaController() {
        emf = Persistence.createEntityManagerFactory("gestionPersonnePU");
    }
    private EntityManagerFactory emf = null;
 
    public EntityManager getEntityManager() {
        return emf.createEntityManager();
    }
 
    public void create(Personne personne) {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            em.persist(personne);
            em.getTransaction().commit();
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }
 
    public void edit(Personne personne) throws NonexistentEntityException, Exception {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            personne = em.merge(personne);
            em.getTransaction().commit();
        } catch (Exception ex) {
            String msg = ex.getLocalizedMessage();
            if (msg == null || msg.length() == 0) {
                Long id = personne.getId();
                if (findPersonne(id) == null) {
                    throw new NonexistentEntityException("The personne with id " + id + " no longer exists.");
                }
            }
            throw ex;
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }
 
    public void destroy(Long id) throws NonexistentEntityException {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            Personne personne;
            try {
                personne = em.getReference(Personne.class, id);
                personne.getId();
            } catch (EntityNotFoundException enfe) {
                throw new NonexistentEntityException("The personne with id " + id + " no longer exists.", enfe);
            }
            em.remove(personne);
            em.getTransaction().commit();
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }
 
    public List<Personne> findPersonneEntities() {
        return findPersonneEntities(true, -1, -1);
    }
 
    public List<Personne> findPersonneEntities(int maxResults, int firstResult) {
        return findPersonneEntities(false, maxResults, firstResult);
    }
 
    private List<Personne> findPersonneEntities(boolean all, int maxResults, int firstResult) {
        EntityManager em = getEntityManager();
        try {
            Query q = em.createQuery("select object(o) from Personne as o");
            if (!all) {
                q.setMaxResults(maxResults);
                q.setFirstResult(firstResult);
            }
            return q.getResultList();
        } finally {
            em.close();
        }
    }
 
    public Personne findPersonne(Long id) {
        EntityManager em = getEntityManager();
        try {
            return em.find(Personne.class, id);
        } finally {
            em.close();
        }
    }
 
    public int getPersonneCount() {
        EntityManager em = getEntityManager();
        try {
            return ((Long) em.createQuery("select count(o) from Personne as o").getSingleResult()).intValue();
        } finally {
            em.close();
        }
    }
 
}

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package gestionpersonne;
 
/**
 *
 * @author linuxien
 */
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Personne p = new Personne("alex");
        PersonneJpaController controller = new PersonneJpaController();
        controller.create(p);
    }
 
}