Bonjour

J'ai une fonction que j'ai eu à tester dans mon projet EJB et il fonctionne correctement.
Mais une fois à l'intérieur du Controller dans mon projet WEB.j'ai une exception nullpointerException.
Voici le code de la classe complete

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package scolarite;
 
import dao.*;
 
import java.util.Date;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.ejb.LocalBean;
import modele.*;
 
/**
 *
 * @author fabrice
 */
@Stateless
public class InscriptionManager {
 
    @EJB
    private EtabformationDao etabformationDao;
 
    @EJB
    private CycleformationDao cycleformationDao;
 
    @EJB
    private CyclefiliereDao cyclefiliereDao;
 
    @EJB
    private NiveaufiliereDao niveaufiliereDao;
 
    @EJB
    private ClasseDao classeDao;
 
    private Etabformation etabformation;
    private Cycleformation cycleformation;
    private Cyclefiliere cycleFil;
    private Niveaufiliere nivFil;
    private Classe classe;
 
    public InscriptionManager() {
        etabformation=new Etabformation();
        cycleformation = new Cycleformation();
        cycleFil = new Cyclefiliere();
        nivFil = new Niveaufiliere();
        classe = new Classe();
    }
 
    public void generateClasse(Etablissements etab, Formation formation, Cycle cycle, Filiere filiere, Niveau niveau, int nombre) {
        nivFil = niveaufiliereDao.find(new NiveaufilierePK(formation.getId(), etab.getEtablissementsPK().getId(), etab.getEtablissementsPK().getAnneeCrs(), cycle.getId(), filiere.getId(), niveau.getId()));
        if (nivFil == null) {
            etabformation=addFormationToEtab(etab, formation);
//            //joindre le cycle a la formation
            cycleformation = this.addCyclesToFormation(etabformation, cycle);
 
//            //joindre la filiere  au cycle
            cycleFil = this.addFiliereToCycle(cycleformation, filiere);
//            //joindre le niveau
            nivFil = this.addNiveauToFiliere(cycleFil, niveau);
//
//
        }
//        //enregistrement de classes en fonction du nombre de salle ou classes com IG1A et IG1B
        for (int i = 1; i <= nombre; i++) {
            classe=new Classe();
            //provisoire il faut avoir la nomemclature des classes
            classe.setCode(filiere.getCode() + "" + niveau.getCode() + "-" + i);
            classe.setActif(Boolean.TRUE);
            classe.setNiveaufiliere(nivFil);
            classeDao.create(classe);
        }
 
    }
    public Etabformation addFormationToEtab(Etablissements etab,Formation formation){
         EtabformationPK etabFormationPk = new EtabformationPK(formation.getId(), etab.getEtablissementsPK().getId(),  etab.getEtablissementsPK().getAnneeCrs());
            etabformation = etabformationDao.find(etabFormationPk);
 
            //je vais joindre la formation  a l etab;
            if (etabformation == null) {
                etabformation=new Etabformation();
                etabformation.setEtabformationPK(etabFormationPk);
                etabformation.setDateCreation(new Date());
                etabformationDao.create(etabformation);
            }
            return etabformation;
 
    }
    public Cycleformation addCyclesToFormation(Etabformation etabForm, Cycle cycle) {
        CycleformationPK cycleFormationPk = new CycleformationPK(etabForm.getEtabformationPK().getFormation_id(), etabForm.getEtabformationPK().getEtab_id(), etabForm.getEtabformationPK().getAnnee_id(), cycle.getId());
 
        cycleformation = cycleformationDao.find(cycleFormationPk);
        if (cycleformation == null) {
            cycleformation=new Cycleformation();
            cycleformation.setCycleformationPK(cycleFormationPk);
 
            cycleformation.setDateCreation(new Date());
            cycleformationDao.create(cycleformation);
        }
        return cycleformation;
    }
 
    public Cyclefiliere addFiliereToCycle(Cycleformation cycleFormation, Filiere filiere) {
        CyclefilierePK cyclefilierePk = new CyclefilierePK(cycleFormation.getCycleformationPK().getFormation_id(),
                cycleFormation.getCycleformationPK().getEtab_id(), cycleFormation.getCycleformationPK().getAnnee_id(), cycleFormation.getCycleformationPK().getCycle_id(), filiere.getId());
 
        cycleFil = cyclefiliereDao.find(cyclefilierePk);
        if (cycleFil == null) {
            cycleFil=new Cyclefiliere();
            cycleFil.setCyclefilierePK(cyclefilierePk);
            cycleFil.setDatecreation(new Date());
            cyclefiliereDao.create(cycleFil);
        }
        return cycleFil;
    }
 
    public Niveaufiliere addNiveauToFiliere(Cyclefiliere cycleFil, Niveau niv) {
        NiveaufilierePK niveauFilierePk = new NiveaufilierePK(cycleFil.getCyclefilierePK().getFormation_id(),
                cycleFil.getCyclefilierePK().getEtab_id(), cycleFil.getCyclefilierePK().getAnnee_id(), cycleFil.getCyclefilierePK().getCycle_id(), cycleFil.getCyclefilierePK().getFiliere_id(), niv.getId());
 
        nivFil = niveaufiliereDao.find(niveauFilierePk);
        if (nivFil == null) {
            nivFil=new Niveaufiliere();
            nivFil.setNiveaufilierePK(niveauFilierePk);
            niveaufiliereDao.create(nivFil);
        }
        return nivFil;
    }
}
lors de l'execution de la fonction generateClasse sur la ligne etabformation=addFormationToEtab(etab, formation); etabformation est null

voici la trace de l'erreur
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Avertissement: A system exception occurred during an invocation on EJB InscriptionManager method public void scolarite.InscriptionManager.generateClasse(modele.Etablissements,modele.Formation,modele.Cycle,modele.Filiere,modele.Niveau,int)
javax.ejb.EJBException
	at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5193)
	at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5091)
	at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4879)
	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2039)
	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1990)
	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:222)
	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
	at $Proxy279.generateClasse(Unknown Source)
	at scolarite.__EJB31_Generated__InscriptionManager__Intf____Bean__.generateClasse(Unknown Source)
	at com.better.GenClasseController.genererClasses(GenClasseController.java:202)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
	at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
	at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43)
	at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:56)
	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
	at javax.faces.component.UICommand.broadcast(UICommand.java:300)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
	at scolarite.InscriptionManager.addCyclesToFormation(InscriptionManager.java:87)
	at scolarite.InscriptionManager.generateClasse(InscriptionManager.java:63)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
	at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
	at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5366)
	at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
	at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:46)
	at sun.reflect.GeneratedMethodAccessor110.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
	at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
	at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
	at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5338)
	at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5326)
	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
	... 47 more
Cordialement!!