详解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;        }