Discussion :

[sofien]

J'ai voulu réalisé l'exemple de livres moi meme mais j'ai obtenu plusieurs exceptions. en voici le code

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/**
 * 
 */
package com.sofien.tutoriel.book;
 
import java.util.Hashtable;
import java.util.Properties;
 
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
 
import com.sofien.tutoriel.book.remote.BookTestBeanRemote;
 
/**
 * @author Sofien
 * 
 */
public class FirstEJB3TutorialClient {
 
	/**
         * @param args
         */
	public static void main(String[] args) {
		try {
			/*
			 * Hashtable env = new Hashtable();
			 * env.put(Context.INITIAL_CONTEXT_FACTORY,
			 * "org.jnp.interfaces.NamingContextFactory");
			 * env.put(Context.URL_PKG_PREFIXES,
			 * "org.jboss.naming:org.jnp.interfaces");
			 * env.put(Context.PROVIDER_URL, "localhost:1099"); Context context =
			 * new InitialContext(env);
			 */
			Context context = new InitialContext();
			BookTestBeanRemote beanRemote = (BookTestBeanRemote) context.lookup(BookTestBean.RemoteJNDIName);
			beanRemote.test();
		} catch (NamingException e) {
			e.printStackTrace();
		}
	}
}

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/**
 * 
 */
package com.sofien.tutoriel.book.entity;
 
import java.io.Serializable;
 
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
 
/**
 * @author Sofien
 *
 */
@Entity
@Table(name="book")
@SequenceGenerator(name = "book_sequence", sequenceName = "book_id_seq")
 
public class Book implements Serializable{
 
	/**
         * 
         */
	private Integer id;
	private String title;
	private String author;
 
	/**
         * @param id
         * @param title
         * @param author
         */
	public Book(Integer id, String title, String author) {
		super();
		this.id = id;
		this.title = title;
		this.author = author;
	}
 
	@Id
	@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "book_sequence")
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getAuthor() {
		return author;
	}
	public void setAuthor(String author) {
		this.author = author;
	}
	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return "Book: " + getId() + " Title " + getTitle() + " Author " + getAuthor();
	}
}

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/**
 * 
 */
package com.sofien.tutoriel.book;
 
import java.util.Iterator;
import java.util.List;
 
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
 
import com.sofien.tutoriel.book.entity.Book;
import com.sofien.tutoriel.book.local.BookTestBeanLocal;
import com.sofien.tutoriel.book.remote.BookTestBeanRemote;
 
/**
 * @author Sofien
 * 
 */
 
@Stateless
public class BookTestBean implements BookTestBeanLocal, BookTestBeanRemote {
	@PersistenceContext
	EntityManager em;
	public static final String RemoteJNDIName = "BookTestBean/remote";
	public static final String LocalJNDIName = "BookTestBean/local";
 
	/*
	 * (non-Javadoc)
	 * 
	 * @see com.sofien.tutoriel.book.local.BookTestBeanLocal#test()
	 */
	public void test() {
		Book book = new Book(null, "My first bean book", "Sebastian");
		em.persist(book);
		Book book2 = new Book(null, "another book", "Paul");
		em.persist(book2);
		Book book3 = new Book(null, "EJB 3 developer guide, comes soon", "Sebastian");
		em.persist(book3);
		System.out.println("list some books");
		List someBooks = em.createQuery("from Book b where b.author=:name").setParameter("name", "Sebastian").getResultList();
		for (Iterator iter = someBooks.iterator(); iter.hasNext();) {
			Book element = (Book) iter.next();
			System.out.println(element);
		}
		System.out.println("List all books");
		List allBooks = em.createQuery("from Book").getResultList();
		for (Iterator iter = allBooks.iterator(); iter.hasNext();) {
			Book element = (Book) iter.next();
			System.out.println(element);
		}
		System.out.println("delete a book");
		em.remove(book2);
		System.out.println("List all books");
		allBooks = em.createQuery("from Book").getResultList();
		for (Iterator iter = allBooks.iterator(); iter.hasNext();) {
			Book element = (Book) iter.next();
			System.out.println(element);
		}
	}
 
}

Et voiçi les exceptions

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javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.remoting.InvokerLocator; local class incompatible: stream classdesc serialVersionUID = -4977622166779282521, local class serialVersionUID = -2909329895029296248]
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:722)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587)
	at javax.naming.InitialContext.lookup(Unknown Source)
	at com.sofien.tutoriel.book.FirstEJB3TutorialClient.main(FirstEJB3TutorialClient.java:36)
Caused by: java.io.InvalidClassException: org.jboss.remoting.InvokerLocator; local class incompatible: stream classdesc serialVersionUID = -4977622166779282521, local class serialVersionUID = -2909329895029296248
	at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
	at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
	at java.io.ObjectInputStream.readClassDesc(Unknown Source)
	at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
	at java.io.ObjectInputStream.readObject0(Unknown Source)
	at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
	at java.io.ObjectInputStream.readSerialData(Unknown Source)
	at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
	at java.io.ObjectInputStream.readObject0(Unknown Source)
	at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
	at java.io.ObjectInputStream.readSerialData(Unknown Source)
	at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
	at java.io.ObjectInputStream.readObject0(Unknown Source)
	at java.io.ObjectInputStream.readObject(Unknown Source)
	at java.rmi.MarshalledObject.get(Unknown Source)
	at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652)
	... 3 more

Merci pour l'aide ...

PS : djo.mos je m'excuse pour le message en anglais car je l'utilise parfois inconsiement

[christopheJ]

D'après l'exception, ton EJB et son client n'utilise pas la même version de la classe échangée.
Précise le serialVersionUID dans ta classe Book.

[sofien]

bonjour, en fait ce n'est pas le serial qui était la cause mais en fait le fichier jbossall-client.jar

[Faelar Draen]

J'ai un soucis similaire, une java.io.InvalidClassException

2011-04-21 12:17:47 ERROR -
java.lang.reflect.UndeclaredThrowableException
at $Proxy3.service(Unknown Source)
at package.MaClasse.main(MaClasse.java:106)

Caused by: java.io.InvalidClassException: monPackage.MonBean; local class incompatible: stream classdesc serialVersionUID = -5761212706669403453, local class serialVersionUID = 305271275964941893

J'aimerais savoir comment le problème a été résolu, ça peut peut-être résoudre mon problème.

[Faelar Draen]

En fait, j'ai trouvé d'où venait mon soucis.