Erreur connexion avec Datasource

Bonjour à tous,
Pour me connecter à ma bdd (mysql), j'ai mis une config via la datasource en place :

Code:

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public class ConnexionMYSQL {
	public final String POOL_NAME  = "jdbc/MaDataSource";
		public ConnexionMYSQL(){
		super();}
		public static void initConnexion() throws NamingException{
		System.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.fscontext.RefFSContextFactory");
		InitialContext initContext = new InitialContext();
		MysqlDataSource mysqlDataSource = new MysqlDataSource();
		mysqlDataSource.setServerName("localhost");
		mysqlDataSource.setPort(3306);
		mysqlDataSource.setUser("root");
		mysqlDataSource.setPassword("mysql");
		mysqlDataSource.setDatabaseName("ecolexpert");
 
		//Liaison de la DataSource au Context
		initContext.rebind("jdbc/MaDataSource", mysqlDataSource);
	}
 
}