Bonjour à tous,

J'ai écrit un projet J2EE avec mes beans entités + un CRUD générique + une couche service où j'implemente les méthodes de chaque entité.

J'ai créé un projet test où je fais un create puis un find d'un meme objet.
Voilà les erreurs que j'obtient:
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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Exception in thread "main" javax.ejb.EJBException: java.lang.NullPointerException
	at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:77)
	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:487)
	at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
	at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
	at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
	at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
	at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
	at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
	at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
	at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
Caused by: java.lang.NullPointerException
	at com.marinesoft.service.UserBean.create(UserBean.java:32)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
	at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
	at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
	at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
	at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_18733404.invoke(InvocationContextInterceptor_z_fillMethod_18733404.java)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
	at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_18733404.invoke(InvocationContextInterceptor_z_setup_18733404.java)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:487)
	at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
	at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
	at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
	at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
	at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
	at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
	at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
	at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
	at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:206)
	at org.jboss.remoting.Client.invoke(Client.java:1708)
	at org.jboss.remoting.Client.invoke(Client.java:612)
	at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
	at $Proxy3.invoke(Unknown Source)
	at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
	at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
	at $Proxy2.create(Unknown Source)
	at test.main(test.java:26)
	at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
	at $Proxy3.invoke(Unknown Source)
	at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
	at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
	at $Proxy2.create(Unknown Source)
	at test.main(test.java:26)
le déploiement se fait sans erreurs.

Ma classe test:
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
 
import com.marinesoft.Iservice.*;
import com.marinesoft.service.*;
import com.marinesoft.donnee.*;
 
 
public class test {
 
	/**
         * @param args
         */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("main.exe");
		try{
			Context usercxt = new InitialContext();                               
	         Iuser iu = (Iuser) usercxt.lookup("UserBean/remote");	
 
//////////////////create a user////////////////
	         System.out.println("méthode create");
	      User user = new User(0, "Badaoui", "Amel", "", "", "", "", "", "", "", "", "sa", "ap115j83");
	      System.out.println("le user à insérer est de pointeur:"+user);
          User user1 = iu.create(user,0);
         System.out.println("user created");
 
//////////////////find the created user////////////////
         System.out.println("méthode find");
             User user2 = iu.findById(0);
             System.out.println("The created user was found and his name is "+user2.getNom());
 
 
		}catch (NamingException e) {
			System.out.println("exception ici");
	         e.printStackTrace();
	      }
   	}
}
La classe UserBean:
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package com.marinesoft.service;
 
import java.util.List;
 
import com.marinesoft.Iservice.Iuser;
import com.marinesoft.genericDAO.*;
import com.marinesoft.donnee.User;
 
import javax.ejb.EJB;
import javax.ejb.Remote;
import javax.ejb.Stateless;
 
/**
 * Session Bean implementation class UserBean
 */
@Stateless
@Remote( { Iuser.class })
public class UserBean implements Iuser {
 
 
	private IGenericDao<User, Integer> IUserDao;
    /**
     * Default constructor. 
     */
    public UserBean() {
        // TODO Auto-generated constructor stub
    }
//*********************CRUD***************************************
    //*******************create***********************************
    public User create(User U, int codeUser){
    	return IUserDao.create(U, codeUser);
    }
 
  //*******************update***********************************
    public User update(User U, int codeUser){
    	return IUserDao.update(U, codeUser);
    }
 
  //*******************delete***********************************
    public void delete(int codeUser){
    	IUserDao.delete(codeUser);
    }
 
  //*******************findbyid***********************************
    public User findById(int codeUser){
    	return IUserDao.findById(codeUser);
    }
 
  //*******************findall***********************************
    public List<User> findAll(){
    	return IUserDao.findAll();
    }
}
Merci d'avance