[EJB/JSF] Problème d'accès à la base de données

J'ai créer un projet "Entreprise Application"
- sur le module EJB j'ai généré les classes de la base de données:

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package persistenceLayer.entity;
 
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;
import persistence.entity.Etudiant;
 
/**
 *
 * @author Administrateur
 */
@Stateless
public class EtudiantFacade extends AbstractFacade<Etudiant> implements EtudiantFacadeLocal{
    @PersistenceContext(unitName = "echange-ejbPU")
    private EntityManager em;
 
    protected EntityManager getEntityManager() {
        return em;
    }
 
    public EtudiantFacade() {
        super(Etudiant.class);
    }
    public void create(Etudiant u){
            em.persist(u);
    }
    @Override
    public List<Etudiant> findAll(){
        return em.createQuery("SELECT * FROM Etudiant").getResultList();
    }
     public void remove(long id){
        em.remove(id);
    }
     public Etudiant findUser(Long id){
        return em.find(Etudiant.class, id);
    }
}

et sur l'application war

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package servlet;
 
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import persistence.entity.Etudiant;
import persistenceLayer.entity.EtudiantFacade;
 
/**
 *
 * @author Administrateur
 */
@WebServlet(name="test", urlPatterns={"/test"})
public class test extends HttpServlet {
    @EJB
    Etudiant e;
 
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
 
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet test</title>");  
            out.println("</head>");
            out.println("<body>");
            e=new Etudiant(1);
            System.out.print(e.getId());
            out.println("</body>");
            out.println("</html>");
        } catch(Exception ex) {
            ex.printStackTrace();
            out.close();
        }
    } 
 
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 
 
    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
 
    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
 
}

mais il m'affiche l'erreur suivant

Code:

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30 janv. 2012 17:26:57 com.sun.enterprise.glassfish.bootstrap.ASMain main
INFO: Launching GlassFish on Felix platform
Welcome to Felix
================
INFO: Perform lazy SSL initialization for the listener 'http-listener-2'
INFO: Starting Grizzly Framework 1.9.18-o - Mon Jan 30 17:27:01 WET 2012
INFO: Starting Grizzly Framework 1.9.18-o - Mon Jan 30 17:27:02 WET 2012
INFO: Grizzly Framework 1.9.18-o started in: 346ms listening on port 8080
INFO: Grizzly Framework 1.9.18-o started in: 235ms listening on port 7676
INFO: Grizzly Framework 1.9.18-o started in: 301ms listening on port 3700
INFO: Grizzly Framework 1.9.18-o started in: 478ms listening on port 8181
INFO: Grizzly Framework 1.9.18-o started in: 472ms listening on port 4848
INFO: Using com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate as the delegate
INFO: SEC1002: Security Manager is OFF.
INFO: Security startup service called
INFO: SEC1143: Loading policy provider com.sun.enterprise.security.provider.PolicyWrapper.
INFO: Realm admin-realm of classtype com.sun.enterprise.security.auth.realm.file.FileRealm successfully created.
INFO: Realm file of classtype com.sun.enterprise.security.auth.realm.file.FileRealm successfully created.
INFO: Realm certificate of classtype com.sun.enterprise.security.auth.realm.certificate.CertificateRealm successfully created.
INFO: Security service(s) started successfully....
INFO: Hibernate Validator bean-validator-3.0-JBoss-4.0.2
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Created HTTP listener http-listener-1 on port 8080
INFO: Created HTTP listener http-listener-2 on port 8181
INFO: Created HTTP listener admin-listener on port 4848
INFO: Created virtual server server
INFO: Created virtual server __asadmin
INFO: Virtual server server loaded system default web module
INFO: percistance.entity.Objet actually got transformed
INFO: Portable JNDI names for EJB ObjetFacade : [java:global/test2/test2-ejb/ObjetFacade!percistanceLayer.entity.ObjetFacadeLocal, java:global/test2/test2-ejb/ObjetFacade]
INFO: percistance.entity.Etudiant actually got transformed
INFO: Portable JNDI names for EJB EtudiantFacade : [java:global/test2/test2-ejb/EtudiantFacade, java:global/test2/test2-ejb/EtudiantFacade!percistanceLayer.entity.EtudiantFacadeLocal]
INFO: percistance.entity.Superetudiant actually got transformed
INFO: Portable JNDI names for EJB SuperetudiantFacade : [java:global/test2/test2-ejb/SuperetudiantFacade, java:global/test2/test2-ejb/SuperetudiantFacade!percistanceLayer.entity.SuperetudiantFacadeLocal]
INFO: WELD-000900 1.0.1 (SP3)
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Loading application test2#test2-war.war at test2-war
INFO: Loading test2 Application done is 4842 ms
INFO: Initialisation de Mojarra 2.0.2 (FCS b10) pour le contexte '/TP3JSF'
INFO: Monitoring jndi:/server/TP3JSF/WEB-INF/faces-config.xml for modifications
INFO: Loading application TP3JSF at /TP3JSF
INFO: Loading TP3JSF Application done is 1172 ms
GRAVE: Class [ Lper/Etudiant; ] not found. Error while loading [ class test ]
ATTENTION: Error in annotation processing: java.lang.NoClassDefFoundError: Lper/Etudiant;
INFO: Loading application testing#testing-war.war at testing-war
INFO: Loading testing Application done is 298 ms
INFO: GlassFish Server Open Source Edition 3.0.1 (22) startup time : Felix(4089ms) startup services(7779ms) total(11868ms)
INFO: Binding RMI port to *:8686
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Created HTTP listener http-listener-1 on port 8080
INFO: Grizzly Framework 1.9.18-o started in: 115ms listening on port 8080
INFO: Perform lazy SSL initialization for the listener 'http-listener-2'
INFO: Created HTTP listener http-listener-2 on port 8181
INFO: Grizzly Framework 1.9.18-o started in: 133ms listening on port 8181
INFO: JMXStartupService: Started JMXConnector, JMXService URL = service:jmx:rmi://khouikha-PC:8686/jndi/rmi://khouikha-PC:8686/jmxrmi
INFO: persistence.entity.Objet actually got transformed
INFO: Portable JNDI names for EJB ObjetFacade : [java:global/echange/echange-ejb/ObjetFacade!persistenceLayer.entity.ObjetFacadeLocal, java:global/echange/echange-ejb/ObjetFacade]
INFO: persistence.entity.Superetudiant actually got transformed
INFO: Portable JNDI names for EJB SuperetudiantFacade : [java:global/echange/echange-ejb/SuperetudiantFacade, java:global/echange/echange-ejb/SuperetudiantFacade!persistenceLayer.entity.SuperetudiantFacadeLocal]
INFO: persistence.entity.Etudiant actually got transformed
INFO: Portable JNDI names for EJB EtudiantFacade : [java:global/echange/echange-ejb/EtudiantFacade!persistenceLayer.entity.EtudiantFacadeLocal, java:global/echange/echange-ejb/EtudiantFacade]
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: EclipseLink, version: Eclipse Persistence Services - 2.0.1.v20100213-r6600
ATTENTION: RAR5117 : Failed to obtain/create connection from connection pool [ mysql_echange_rootPool ]. Reason : com.sun.appserv.connectors.internal.api.PoolingException
ATTENTION: RAR5114 : Error allocating connection : [Error in allocating a connection. Cause: null]
GRAVE: Local Exception Stack: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null
Error Code: 0
        at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:309)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:138)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:94)
        at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:369)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at org.glassfish.persistence.jpa.PersistenceUnitLoader.doJava2DB(PersistenceUnitLoader.java:273)
        at org.glassfish.persistence.jpa.JPADeployer.load(JPADeployer.java:155)
        at org.glassfish.persistence.jpa.JPADeployer.load(JPADeployer.java:55)
        at org.glassfish.internal.data.ModuleInfo.load(ModuleInfo.java:175)
        at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:216)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:338)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183)
        at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224)
        at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365)
        at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204)
        at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
        at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.sql.SQLException: Error in allocating a connection. Cause: null
        at com.sun.gjc.spi.base.DataSource.getConnection(DataSource.java:112)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:126)
        ... 41 more
 
ATTENTION: Can not find resource bundle for this logger.  class name that failed: org.glassfish.persistence.jpa.PersistenceUnitLoader
ATTENTION: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null
Error Code: 0
javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null
Error Code: 0
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:397)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at org.glassfish.persistence.jpa.PersistenceUnitLoader.doJava2DB(PersistenceUnitLoader.java:273)
        at org.glassfish.persistence.jpa.JPADeployer.load(JPADeployer.java:155)
        at org.glassfish.persistence.jpa.JPADeployer.load(JPADeployer.java:55)
        at org.glassfish.internal.data.ModuleInfo.load(ModuleInfo.java:175)
        at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:216)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:338)
        at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183)
        at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235)
        at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224)
        at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365)
        at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204)
        at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
        at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
        at java.lang.Thread.run(Thread.java:619)
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null
Error Code: 0
        at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:309)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:138)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:94)
        at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:369)
        ... 36 more
Caused by: java.sql.SQLException: Error in allocating a connection. Cause: null
        at com.sun.gjc.spi.base.DataSource.getConnection(DataSource.java:112)
        at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:126)
        ... 41 more
 
ATTENTION: Cannot create tables for application echange. The expected DDL file echange_echange-ejb_echange-ejbPU_createDDL.jdbc is not available.
ATTENTION: Can not find resource bundle for this logger.  class name that failed: org.glassfish.persistence.jpa.PersistenceUnitLoader
INFO: [Thread[GlassFish Kernel Main Thread,5,main]] started
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Initialisation de Mojarra 2.0.2 (FCS b10) pour le contexte '/echange-war'
INFO: Monitoring jndi:/server/echange-war/WEB-INF/faces-config.xml for modifications
INFO: Loading application echange#echange-war.war at echange-war
INFO: echange was successfully deployed in 6*846 milliseconds.
INFO: {felix.fileinstall.poll (ms) = 5000, felix.fileinstall.dir = C:\Program Files\glassfish-3.0.1\glassfish\modules\autostart, felix.fileinstall.debug = 1, felix.fileinstall.bundles.new.start = true, felix.fileinstall.tmpdir = C:\Users\ADMINI~1\AppData\Local\Temp\fileinstall--975758409681544488, felix.fileinstall.filter = null}
INFO: {felix.fileinstall.poll (ms) = 5000, felix.fileinstall.dir = C:\Program Files\glassfish-3.0.1\glassfish\domains\domain1\autodeploy\bundles, felix.fileinstall.debug = 1, felix.fileinstall.bundles.new.start = true, felix.fileinstall.tmpdir = C:\Users\ADMINI~1\AppData\Local\Temp\fileinstall-1263499465193541070, felix.fileinstall.filter = null}
INFO: Started bundle: file:/C:/Program%20Files/glassfish-3.0.1/glassfish/modules/autostart/osgi-web-container.jar
INFO: Updating configuration from org.apache.felix.fileinstall-autodeploy-bundles.cfg
INFO: Installed C:\Program Files\glassfish-3.0.1\glassfish\modules\autostart\org.apache.felix.fileinstall-autodeploy-bundles.cfg
INFO: {felix.fileinstall.poll (ms) = 5000, felix.fileinstall.dir = C:\Program Files\glassfish-3.0.1\glassfish\domains\domain1\autodeploy\bundles, felix.fileinstall.debug = 1, felix.fileinstall.bundles.new.start = true, felix.fileinstall.tmpdir = C:\Users\ADMINI~1\AppData\Local\Temp\fileinstall--322386482946334545, felix.fileinstall.filter = null}
INFO: PWC1412: WebModule[/echange-war] ServletContext.log():PWC1409: Marking servlet test as unavailable
ATTENTION: StandardWrapperValve[test]: PWC1382: Allocate exception for servlet test
com.sun.enterprise.container.common.spi.util.InjectionException: Error creating managed object for class servlet.test
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:312)
        at com.sun.enterprise.web.WebContainer.createServletInstance(WebContainer.java:709)
        at com.sun.enterprise.web.WebModule.createServletInstance(WebModule.java:1937)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1252)
        at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:1059)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:187)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: Exception attempting to inject Remote ejb-ref name=servlet.test/e,Remote 3.x interface =persistence.entity.Etudiant,ejb-link=null,lookup=null,mappedName=,jndi-name=persistence.entity.Etudiant,refType=Session into class servlet.test
        at org.glassfish.weld.services.InjectionServicesImpl.aroundInject(InjectionServicesImpl.java:133)
        at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:47)
        at org.jboss.weld.manager.SimpleInjectionTarget.inject(SimpleInjectionTarget.java:116)
        at org.glassfish.weld.services.JCDIServiceImpl.createManagedObject(JCDIServiceImpl.java:204)
        at org.glassfish.weld.services.JCDIServiceImpl.createManagedObject(JCDIServiceImpl.java:178)
        at com.sun.enterprise.container.common.impl.managedbean.ManagedBeanManagerImpl.createManagedBean(ManagedBeanManagerImpl.java:456)
        at com.sun.enterprise.container.common.impl.managedbean.ManagedBeanManagerImpl.createManagedBean(ManagedBeanManagerImpl.java:423)
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:295)
        ... 27 more
Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Exception attempting to inject Remote ejb-ref name=servlet.test/e,Remote 3.x interface =persistence.entity.Etudiant,ejb-link=null,lookup=null,mappedName=,jndi-name=persistence.entity.Etudiant,refType=Session into class servlet.test
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:614)
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.inject(InjectionManagerImpl.java:384)
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:168)
        at org.glassfish.weld.services.InjectionServicesImpl.aroundInject(InjectionServicesImpl.java:126)
        ... 34 more
Caused by: javax.naming.NamingException: Lookup failed for 'java:comp/env/servlet.test/e' in SerialContext  [Root exception is javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=servlet.test/e,Remote 3.x interface =persistence.entity.Etudiant,ejb-link=null,lookup=null,mappedName=,jndi-name=persistence.entity.Etudiant,refType=Session' .  Actual (possibly internal) Remote JNDI name used for lookup is 'persistence.entity.Etudiant#persistence.entity.Etudiant' [Root exception is javax.naming.NamingException: Lookup failed for 'persistence.entity.Etudiant#persistence.entity.Etudiant' in SerialContext  [Root exception is javax.naming.NameNotFoundException: persistence.entity.Etudiant#persistence.entity.Etudiant not found]]]
        at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:442)
        at javax.naming.InitialContext.lookup(InitialContext.java:392)
        at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:513)
        ... 37 more
Caused by: javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=servlet.test/e,Remote 3.x interface =persistence.entity.Etudiant,ejb-link=null,lookup=null,mappedName=,jndi-name=persistence.entity.Etudiant,refType=Session' .  Actual (possibly internal) Remote JNDI name used for lookup is 'persistence.entity.Etudiant#persistence.entity.Etudiant' [Root exception is javax.naming.NamingException: Lookup failed for 'persistence.entity.Etudiant#persistence.entity.Etudiant' in SerialContext  [Root exception is javax.naming.NameNotFoundException: persistence.entity.Etudiant#persistence.entity.Etudiant not found]]
        at com.sun.ejb.EjbNamingReferenceManagerImpl.resolveEjbReference(EjbNamingReferenceManagerImpl.java:174)
        at com.sun.enterprise.container.common.impl.ComponentEnvManagerImpl$EjbReferenceProxy.create(ComponentEnvManagerImpl.java:1040)
        at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:688)
        at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:657)
        at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:148)
        at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:428)
        ... 39 more
Caused by: javax.naming.NamingException: Lookup failed for 'persistence.entity.Etudiant#persistence.entity.Etudiant' in SerialContext  [Root exception is javax.naming.NameNotFoundException: persistence.entity.Etudiant#persistence.entity.Etudiant not found]
        at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:442)
        at javax.naming.InitialContext.lookup(InitialContext.java:392)
        at com.sun.ejb.EjbNamingReferenceManagerImpl.resolveEjbReference(EjbNamingReferenceManagerImpl.java:169)
        ... 44 more
Caused by: javax.naming.NameNotFoundException: persistence.entity.Etudiant#persistence.entity.Etudiant not found
        at com.sun.enterprise.naming.impl.TransientContext.doLookup(TransientContext.java:197)
        at com.sun.enterprise.naming.impl.TransientContext.lookup(TransientContext.java:168)
        at com.sun.enterprise.naming.impl.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:58)
        at com.sun.enterprise.naming.impl.LocalSerialContextProviderImpl.lookup(LocalSerialContextProviderImpl.java:101)
        at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:430)
        ... 46 more

Aidez moi S.V.P
C'est quoi la solution