JdbcTemplate中的exectue和queryForList方法的性能对比

@Autowired

JdbcTemplate jdbcParam;

pstm =

                jdbcParam.getDataSource()

                    .getConnection()

                    .prepareStatement(" SELECT T.ID, T.EPARCHY_CODE FROM  TD_B_SPECIALID_HOME T WHERE T.ID_TYPE = 2 ");

            result = pstm.executeQuery();

            long acctId;

            String eparchyCode;

            while (result.next())

            {

                acctId = result.getLong("ID");

                eparchyCode = result.getString("EPARCHY_CODE");

                specialAcctIdWithEparchyCodeMap.put(acctId, eparchyCode);

            }

        }

        catch (Exception e)

        {

            logger.error("run initSpecialAcctIdWithEparchyCodeMap error.", e);

        }

        finally

        {

            try

            {

                if (!result.isClosed())

                {

                    result.close();

                }

            }

            catch (SQLException e)

            {

                logger.error("Can not close resultset conn.", e);

            }

            finally

            {

                try

                {

                    if (!pstm.isClosed())

                    {

                        pstm.close();

                    }

                }

                catch (SQLException e)

                {

                    logger.error("Can not close preparedstatment conn.", e);

                }

            }

        }

以上代码：需要打开preparedStatement和ResultSet连接，影响性能

而用jdbcParam.queryForList(sql,new Object[]{},Integer.class);

不需要做打开连接关闭连接动作，直接由spring容器管理，性能提升不少。