[Débutant] Problème de Context.lookup
Bonjour,
Je suis débutant en EJB et j'essaye de créer ma première application ejb 3.0 avec NetBeans 5.5
mais je rencontre des problèmes
voici la liste des erreurs que mon application affiche
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javax.naming.NameNotFoundException: ejb.NewEntityFacadeLocal not found
at com.sun.enterprise.naming.TransientContext.doLookup(TransientContext.java:203)
at com.sun.enterprise.naming.TransientContext.lookup(TransientContext.java:175)
at com.sun.enterprise.naming.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:61)
at com.sun.enterprise.naming.LocalSerialContextProviderImpl.lookup(LocalSerialContextProviderImpl.java:98)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:309)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at web.ListNews.lookupNewEntityFacade(ListNews.java:22)
at web.ListNews.processRequest(ListNews.java:48)
at web.ListNews.doGet(ListNews.java:72)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:278)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
StandardWrapperValve[ListNews]: Servlet.service() for servlet ListNews threw exception
java.lang.RuntimeException: javax.naming.NameNotFoundException: ejb.NewEntityFacadeLocal not found
at web.ListNews.lookupNewEntityFacade(ListNews.java:27)
at web.ListNews.processRequest(ListNews.java:48)
at web.ListNews.doGet(ListNews.java:72)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:278)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
Caused by: javax.naming.NameNotFoundException: ejb.NewEntityFacadeLocal not found
at com.sun.enterprise.naming.TransientContext.doLookup(TransientContext.java:203)
at com.sun.enterprise.naming.TransientContext.lookup(TransientContext.java:175)
at com.sun.enterprise.naming.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:61)
at com.sun.enterprise.naming.LocalSerialContextProviderImpl.lookup(LocalSerialContextProviderImpl.java:98)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:309)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at web.ListNews.lookupNewEntityFacade(ListNews.java:22)
... 28 more |
et voici les codes sources de mon application
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package ejb;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
/**
* Entity class NewEntity
*/
@Entity
public class NewEntity implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String title;
private String body;
/** Creates a new instance of NewEntity */
public NewEntity() {
}
/**
* Gets the id of this NewEntity.
* @return the id
*/
public Long getId() {
return this.id;
}
/**
* Sets the id of this NewEntity to the specified value.
* @param id the new id
*/
public void setId(Long id) {
this.id = id;
}
public String gettitle() {
return this.title;
}
public String getbody() {
return this.body;
}
public void setTitle(String title) {
this.title=title;
}
public void setBody(String body) {
this.body= body;
}
} |
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package ejb;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
@Stateless
public class NewEntityFacade implements NewEntityFacadeLocal {
@PersistenceContext
private EntityManager em;
/** Creates a new instance of NewEntityFacade */
public NewEntityFacade() {
}
public void create(NewEntity newEntity) {
em.persist(newEntity);
}
public void edit(NewEntity newEntity) {
em.merge(newEntity);
}
public void destroy(NewEntity newEntity) {
em.merge(newEntity);
em.remove(newEntity);
}
public NewEntity find(Object pk) {
return (NewEntity) em.find(NewEntity.class, pk);
}
public List findAll() {
return em.createQuery("select object(o) from NewEntity as o").getResultList();
}
} |
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package ejb;
import java.util.List;
import javax.ejb.Local;
@Local
public interface NewEntityFacadeLocal {
void create(NewEntity newEntity);
void edit(NewEntity newEntity);
void destroy(NewEntity newEntity);
NewEntity find(Object pk);
List findAll();
} |
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package ejb;
import javax.annotation.Resource;
import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.ejb.MessageDrivenContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.ObjectMessage;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
/**
* Entity class NewMessage
*/
@MessageDriven(mappedName = "jms/NewMessage", activationConfig = {
@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
})
public class NewMessage implements MessageListener {
@PersistenceContext
private EntityManager em;
/** Creates a new instance of NewMessage */
@Resource
private MessageDrivenContext mdc;
public NewMessage() {
}
public void onMessage(Message message) {
ObjectMessage msg = null;
try {
if (message instanceof ObjectMessage) {
msg = (ObjectMessage) message;
NewEntity e = (NewEntity) msg.getObject();
save(e);
}
} catch (JMSException e) {
e.printStackTrace();
mdc.setRollbackOnly();
} catch (Throwable te) {
te.printStackTrace();
}
}
public void save(Object object) {
// TODO:
em.persist(object);
}
} |
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package web;
import ejb.NewEntity;
import ejb.NewEntityFacadeLocal;
import java.io.*;
import java.util.Iterator;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.*;
import javax.servlet.http.*;
public class ListNews extends HttpServlet {
private NewEntityFacadeLocal lookupNewEntityFacade() {
try {
javax.naming.Context c = new javax.naming.InitialContext();
return (NewEntityFacadeLocal) c.lookup((NewEntityFacadeLocal.class.getName()));
//j'ai essayé NewsApp/ejb/NewEntityFacadeLocal mais ça ne marche pas aussi
}
catch(javax.naming.NamingException ne) {
java.util.logging.Logger.getLogger(getClass().
getName()).log(java.util.logging.Level.SEVERE,"exception caught" ,ne);
throw new RuntimeException(ne);
}
}
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
// TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet ListNews</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet ListNews at " + request.getContextPath () + "</h1>");
//NewEntityFacadeLocal newEntityFacade = (NewEntityFacadeLocal) lookupNewEntityFacade();
NewEntityFacadeLocal newEntityFacade = (NewEntityFacadeLocal) lookupNewEntityFacade();
List news = newEntityFacade.findAll();
for (Iterator it = news.iterator(); it.hasNext();) {
NewEntity elem = (NewEntity) it.next();
out.println(" <b>"+elem.gettitle()+" </b><br />");
out.println(elem.getbody()+"<br /> ");
}
out.println("<a href='PostMessage'>Add new message</a>");
out.println("</body>");
out.println("</html>");
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
*/
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
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
// </editor-fold>
} |
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package web;
import ejb.NewEntity;
import java.io.*;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.jms.Queue;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.*;
import javax.servlet.http.*;
public class PostMessage extends HttpServlet {
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String title=request.getParameter("title");
String body=request.getParameter("body");
if ((title!=null) && (body!=null)) {
Queue queue = null;
QueueConnection connection = null;
QueueSession session = null;
MessageProducer messageProducer = null;
try {
InitialContext ctx = new InitialContext();
queue = (Queue) ctx.lookup("queue/mdb");
QueueConnectionFactory factory =
(QueueConnectionFactory) ctx.lookup("ConnectionFactory");
connection = factory.createQueueConnection();
session = connection.createQueueSession(false,
QueueSession.AUTO_ACKNOWLEDGE);
messageProducer = session.createProducer(queue);
ObjectMessage message = session.createObjectMessage();
// here we create a NewsEntity, that will be sent in JMS message
NewEntity e = new NewEntity();
e.setTitle(title);
e.setBody(body);
message.setObject(e);
messageProducer.send(message);
messageProducer.close();
connection.close();
response.sendRedirect("ListNews");
} catch (JMSException ex) {
ex.printStackTrace();
} catch (NamingException ex) {
ex.printStackTrace();
}
}
PrintWriter out = response.getWriter();
// TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet PostMessage</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet PostMessage at " + request.getContextPath () + "</h1>");
out.println("<form>");
out.println("Title: <input type='text' name='title'><br/>");
out.println("Message: <textarea name='body'></textarea><br/>");
out.println("<input type='submit'><br/>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
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
*/
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
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
// </editor-fold>
} |
Merci pour votre aide
