bonjour
je suis entrain de faire une application Tomcat 6,jpa et msql j ' ai un message " The user must supply a JDBC connection "

merci pour votre aide

voici le message d' erreur
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DEBUG - initializing class SessionFactoryObjectFactory
DEBUG - registered: 402881833d3f76ef013d3f76f25e0000 (unnamed)
INFO - Not binding factory to JNDI, no JNDI name configured
DEBUG - instantiated session factory
DEBUG - Checking 0 named HQL queries
DEBUG - Checking 0 named SQL queries
DEBUG - opened session at timestamp: 13625693927
DEBUG - begin
DEBUG - opening JDBC connection
erreur add user  :The user must supply a JDBC connection
voici le fichier persistence.xml
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<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
	<persistence-unit name="myjpa" transaction-type="RESOURCE_LOCAL">
		<provider>org.hibernate.ejb.HibernatePersistence</provider>
		<class>com.jpa03.model.Adress</class>
		<class>com.jpa03.model.Client</class>
		<class>com.jpa03.model.Commande</class>
		<class>com.jpa03.model.Person</class>
		<class>com.jpa03.model.User</class>
		<properties>
		    <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
		    <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
			<property name="hibernate.connection.jdbc.url" value="jdbc:mysql://localhost:3306/demo"/>
			<property name="hibernate.connection.username" value="root"/>
			<property name="hibernate.connection.password" value="root"/>
			<!-- JDBC connection pool  -->
			<property name="hibernate.connection.pool_size" value="10" />
			<!--  --> 
            <property name="hibernate.connection.show_sql" value="true" /> 
		</properties>
	</persistence-unit>
</persistence>