public static int executer_update(String requete) {
        int key = 0;
        if (BD_MySQL.debug){
            System.out.println("DEBUG : REQUETE : "+requete);
        }
        try {
            BD_MySQL.stmt.executeUpdate(requete, Statement.RETURN_GENERATED_KEYS);
        } catch (SQLException ex) {
            Logger.getLogger(BD_MySQL.class.getName())
                    .log(Level.SEVERE, null, ex);
        }
        ResultSet rs;
        try {
            rs = BD_MySQL.stmt.getGeneratedKeys();
            if(rs.next()){
                key = rs.getInt(1);
            }
        } catch (SQLException ex) {
            Logger.getLogger(BD_MySQL.class.getName()).log(Level.SEVERE, null, ex);
        }
  
        return key;
    }