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exception 
 
javax.servlet.ServletException: L exécution de la servlet a lancé une exception
 
 
cause mère 
 
java.lang.ExceptionInInitializerError
	dbAcces.manager.ProfilManager.authentification(ProfilManager.java:42)
	control.EnterRoot.doPost(EnterRoot.java:53)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 
 
cause mère 
 
java.lang.RuntimeException: Problème de configuration : JDBC Driver class not found: com.mysql.jdbc.Driver
	dbAcces.manager.HibernateUtil.<clinit>(HibernateUtil.java:24)
	dbAcces.manager.ProfilManager.authentification(ProfilManager.java:42)
	control.EnterRoot.doPost(EnterRoot.java:53)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 
 
cause mère 
 
org.hibernate.HibernateException: JDBC Driver class not found: com.mysql.jdbc.Driver
	org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:89)
	org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:137)
	org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:79)
	org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:425)
	org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
	org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2119)
	org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2115)
	org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1339)
	dbAcces.manager.HibernateUtil.<clinit>(HibernateUtil.java:22)
	dbAcces.manager.ProfilManager.authentification(ProfilManager.java:42)
	control.EnterRoot.doPost(EnterRoot.java:53)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 
 
cause mère 
 
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
	java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
	java.lang.Class.forName0(Native Method)
	java.lang.Class.forName(Class.java:169)
	org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
	org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:84)
	org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:137)
	org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:79)
	org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:425)
	org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
	org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2119)
	org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2115)
	org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1339)
	dbAcces.manager.HibernateUtil.<clinit>(HibernateUtil.java:22)
	dbAcces.manager.ProfilManager.authentification(ProfilManager.java:42)
	control.EnterRoot.doPost(EnterRoot.java:53)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)  | 
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