[Débutant] DuplicateMappingException: Duplicate class/entity mapping model.Livrable

**purking** · 31/01/2010, 02h59

Bonsoir tout le monde,
j'ai un projet dans le quel je dois utiliser Hibernate donc j'ajoute hibernate dans mon projet et je crée un servlet pour tester si tout se passe bien et j'ai l'erreur suivante que je ne sais pas comment résoudre, donc si vous savez ou avez une idée je vous serais reconnaissant.

bout de code pour tester :

Code :

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public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
 
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the GET method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
 
 
		UtilisateurstatutDAO u = new UtilisateurstatutDAO();
 
		u.findAll();
 
}

Message d'erreur :

%%%% Error Creating SessionFactory %%%%
org.hibernate.HibernateException: JDBC Driver class not found: com.mysql.jdbc.Driver
at org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:66)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at model.HibernateSessionFactory.<clinit>(HibernateSessionFactory.java:31)
at model.BaseHibernateDAO.getSession(BaseHibernateDAO.java:13)
at model.UtilisateurstatutDAO.findAll(UtilisateurstatutDAO.java:106)
at controler.test.doGet(test.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:100)
at org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:61)
... 24 more
%%%% Error Creating SessionFactory %%%%
org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Livrable.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:569)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
at model.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:69)
at model.HibernateSessionFactory.getSession(HibernateSessionFactory.java:53)
at model.BaseHibernateDAO.getSession(BaseHibernateDAO.java:13)
at model.UtilisateurstatutDAO.findAll(UtilisateurstatutDAO.java:106)
at controler.test.doGet(test.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping model.Livrable
at org.hibernate.cfg.Mappings.addClass(Mappings.java:118)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:145)
at org.hibernate.cfg.Configuration.add(Configuration.java:669)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
... 24 more
30 janv. 2010 19:50:11 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: "Servlet.service()" pour la servlet test a généré une exception
java.lang.NullPointerException
at model.UtilisateurstatutDAO.findAll(UtilisateurstatutDAO.java:106)
at controler.test.doGet(test.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)

**jawad62** · 31/01/2010, 20h12

Bonsoir,

D'apres ce message tu as un probleme de driver.

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org.hibernate.HibernateException: JDBC Driver class not found: com.mysql.jdbc.Driver

Est-ce qu'il est dans ton build path?

Penses aussi aux balises CODE pour que ton code soit plus clair!

**purking** · 31/01/2010, 22h37

salut,

Oui désole j'avais oublié je les utilisé, pour le driver je m'en suis aperçu hier sa na rien changé a part enlevé l'erreur relatif au driver les autres sont restés.

**jawad62** · 31/01/2010, 23h59

Et au niveau de ton mapping pourrais tu le montrer car on dirait que lui aussi bloque.

**purking** · 03/02/2010, 14h16

voici le fichier de configuration de HIBERNATE et pour le mapping je ne voie pas comment je v faire pour copier toute les classes ici :s, donc je vais juste mettre le fichier xml pour la classe qui pose probleme a savoir livrable.

Code :

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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">
 
<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>
 
	<session-factory>
		<property name="myeclipse.connection.profile">reqmd</property>
		<property name="connection.url">
			jdbc:mysql://localhost:3306/cmmi
		</property>
		<property name="connection.username">root</property>
		<property name="connection.password">root</property>
		<property name="connection.driver_class">
			com.mysql.jdbc.Driver
		</property>
		<property name="dialect">
			org.hibernate.dialect.MySQLDialect
		</property>
		<mapping resource="model/Livrable.hbm.xml" />
		<mapping resource="model/Complexite.hbm.xml" />
		<mapping resource="model/Version.hbm.xml" />
		<mapping resource="model/Type.hbm.xml" />
		<mapping resource="model/Tache.hbm.xml" />
		<mapping resource="model/Phase.hbm.xml" />
		<mapping resource="model/Statut.hbm.xml" />
		<mapping resource="model/Priorite.hbm.xml" />
		<mapping resource="model/Utilisateur.hbm.xml" />
		<mapping resource="model/Utilisateurstatut.hbm.xml" />
		<mapping resource="model/Projet.hbm.xml" />
		<mapping resource="model/Requierrment.hbm.xml" />
 
	</session-factory>
 
</hibernate-configuration>

Fichier xml de la classe livrable :

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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="model.Livrable" table="livrable" catalog="cmmi">
        <id name="livrableId" type="java.lang.Integer">
            <column name="livrableID" />
            <generator class="assigned" />
        </id>
        <many-to-one name="statut" class="model.Statut" fetch="select">
            <column name="statutId" />
        </many-to-one>
        <many-to-one name="tache" class="model.Tache" fetch="select">
            <column name="tacheID" />
        </many-to-one>
        <property name="nomLivrable" type="java.lang.String">
            <column name="nomLivrable" length="254" />
        </property>
        <property name="dateCreationLivrable" type="java.sql.Timestamp">
            <column name="dateCreationLivrable" length="0" not-null="true" />
        </property>
        <property name="livrablePath" type="java.lang.String">
            <column name="livrablePath" length="254" not-null="true" />
        </property>
        <property name="userMdfId" type="java.lang.Integer">
            <column name="userMdfID" />
        </property>
        <property name="userCrtId" type="java.lang.Integer">
            <column name="userCrtID" not-null="true" />
        </property>
    </class>
</hibernate-mapping>

**jawad62** · 06/02/2010, 09h21

Bonjour,

Ta classe Livrable ne serait-elle pas en double dans ton appli??

d'après ce message :

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Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping model.Livrable
at org.hibernate.cfg.Mappings.addClass(Mappings.java:118)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:145)
at org.hibernate.cfg.Configuration.add(Configuration.java:669)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)

[Débutant] DuplicateMappingException: Duplicate class/entity mapping model.Livrable

Hibernate Java

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