erreur java.lang.ClassNotFoundException: org.hibernate.Session

**kanebody** · 17/05/2012, 12h24

Bonjour tout monde.

Je suis en train de faire une application hibernate , mysql et servlet j' ai un message d erreur le voici :

Code :

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java.lang.ClassNotFoundException: org.hibernate.Session
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
	at com.demo.controlleur.ServletUser.doPost(ServletUser.java:36)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:619)

Fichier de configuration hibernate :

Code xml :

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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.bytecode.use_reflection_optimizer">false</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">root</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/demo</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.search.autoregister_listeners">false</property>
        <mapping class="com.demo.bean.Person" />
        <mapping class="com.demo.bean.User" />
    </session-factory>
</hibernate-configuration>

Classe Hibernateutil avec annotation :

Code :

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package com.demo.util;
 
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
 
public class HibernateUtil {
	private static  SessionFactory sessionfactory;
    static{
    	try{
    		sessionfactory = new AnnotationConfiguration().configure().buildSessionFactory();
    	}catch (Throwable ex) {
    		System.err.println("Initial SessionFactory creation failed. : " + ex);
    	    throw new ExceptionInInitializerError(ex);
		}
 
    }	
	public static SessionFactory getSessionFactory(){
		return sessionfactory;
	} 
 
 
}

Classe userimpldao :

Code :

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package com.demo.dao.impl;
 
import java.util.ArrayList;
 
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.demo.bean.User;
import com.demo.dao.Dao;
import com.demo.util.HibernateUtil;
 
public class UserImpldao implements Dao<User> {
    @Override
	public void add(User obj) {
		try{
			HibernateUtil h = new HibernateUtil();
			Session session =h.getSessionFactory().openSession();
			Transaction tx =session.beginTransaction();
			session.saveOrUpdate(obj);
			tx.commit();
		}catch (Exception e) {
 
		}
 
	}
 
	@Override
	public ArrayList<User> findAll() {
		// TODO Auto-generated method stub
		return null;
	}
 
	@Override
	public User findByid(long id) {
		// TODO Auto-generated method stub
		return null;
	}
 
	@Override
	public void remove(User obj) {
		// TODO Auto-generated method stub
 
	}
 
	@Override
	public void update(User obj) {
		// TODO Auto-generated method stub
 
	}
 
}

Classe servletuser :

Code :

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package com.demo.controlleur;
 
import java.io.IOException;
import java.io.PrintWriter;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import com.demo.bean.User;
import com.demo.dao.impl.UserImpldao;
 
/**
 * Servlet implementation class ServletUser
 */
public class ServletUser extends HttpServlet {
	private static final long serialVersionUID = 1L;
 
	/**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}
 
	/**
         * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
         */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out =response.getWriter();
		String login = request.getParameter("login");
		String pasword = request.getParameter("pasword");
		if(!login.isEmpty()&&!pasword.isEmpty()){
			UserImpldao unuser = new UserImpldao();
			User u = new User();
			u.setUsername(login);
			u.setPassword(pasword);
			unuser.add(u);
		 }
		else{
			out.println("<b><i>Please enter event title and date.</i></b>");
		}
 
	}
 
}

Code html :

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<?xml version="1.0" encoding="ISO-8859-1" ?>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Insert title here</title>
</head>
<body>
   <form action="ServletUser" method="post">
<table border="1" cellpadding="3" cellspacing="0">
   <tr>
     <td>Login :</td>
     <td><input type="text" name="login" value="" size=15></input></td>
   </tr>
   <tr>
   <td>Password :</td>
     <td><input type="password" name="pasword" value="" size=15></input></td>
   </tr>
   <tr>
   <td colspan="="2" align="right"><input type="submit" name="Valider" value="Valider"/></td>
   </tr>
</table>
</form>
</body>
</html>