java调用存储过程并封装成map

public List<Map<String , Object>> doCallProcedure(String procedureString,String[] parameters)
                                     throws PersistentDataOperationException {
                         if (!isReady ()) {
                                     throw new PersistentDataOperationException( "DAO is not ready.");
                         }
                        ResultSet rs = null;
                        List<Map< String, Object>> list = new ArrayList<Map<String ,Object>>();
                         try {
                                     Connection con=session.connection();
                                     String procedure = "{call "+procedureString+ "(?,?,?) }"; //拼装调用存储过程字符串
                                    CallableStatement cstmt = con.prepareCall (procedure ); //调用存储过程
                                    cstmt.setString (1,parameters [0 ]); //设置入参
                                    cstmt.setInt (2, Integer. parseInt( parameters[ 1])) ;//设置入参
                                    cstmt.registerOutParameter (3, oracle.jdbc.OracleTypes.CURSOR ); //设置出参
                                    
                                    cstmt.execute (); //执行提交
                                    rs = (ResultSet ) cstmt.getObject (3 ); //获取出参，3为参数顺序数
                                    ResultSetMetaData rsm =rs.getMetaData (); //获得列集
                                    Map< String, Object> map= null;
                                     int col = rsm.getColumnCount ();   //获得列的个数
                                     String colName [] = new String[ col] ;//列名集合
                                     for (int i = 0; i < col; i++) {
                                                colName [i ] = rsm.getColumnName (i+1 );
                                     }
                                     while( rs.next()){
                                                 //注意访问结果集是从索引位置1开始的，而不是0
                                                map = new HashMap< String, Object> ();
                                                 for (int j = 0; j < colName.length; j++) {
                                                            map.put (colName [j ], rs.getString (j+1 ));
                                                 }
                                                list.add (map );
                                     }
                                     session.flush ();
                         } catch (HibernateException e) {
                                     throw new PersistentDataOperationException( e) ;
                         } catch (SQLException e) {
                                    e.printStackTrace ();
                         }
                         return list;
             }