salut j'ai un probléme au niveau de connexion a la base de donnée avec mysql
voila erreur
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23 Opening db connection Cannot connect to this database. java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: NO) Exception in thread "AWT-EventQueue-0" javax.persistence.PersistenceException: No Persistence provider for EntityManager named miniprojetPU at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:56) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34) at Frames.GestionUtilisateur.initComponents(GestionUtilisateur.java:59) at Frames.GestionUtilisateur.<init>(GestionUtilisateur.java:33) at Frames.Accueil$1.run(Accueil.java:94) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:682) at java.awt.EventQueue$3.run(EventQueue.java:680) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:691) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139) at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
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