public static Connection getConnexion () throws BDException {
		Connection conn = null;
		try {
			Properties p = new Properties();
			InputStream is = null;
			is = new FileInputStream("connection.conf");
			p.load(is);
			String url = p.getProperty("url");
			String driver = p.getProperty("driver");
			String login = p.getProperty("user");
			String mdp = p.getProperty("mdp");

			Class.forName(driver);
			conn = DriverManager.getConnection(url,login,mdp);
			conn.setAutoCommit(false);
		} catch (SQLException e) {
			throw new BDException("Connexion impossible à la Base de Données");
		} catch (IOException e) {
			throw new BDException("Fichier conf illisible");
		} catch (ClassNotFoundException e) {
			throw new BDException("Problème d'identification du pilote");
		}
		return conn;
	}