public?List<Map<String,?Object>>?findResult(String?sql,?List<?>?params)
			throws?SQLException?{
		List<Map<String,?Object>>?list?=?new?ArrayList<Map<String,?Object>>();
		int?index?=?1;
		pstmt?=?connection.prepareStatement(sql);
		if?(params?!=?null?&&?!params.isEmpty())?{
			for?(int?i?=?0;?i?<?params.size();?i++)?{
				pstmt.setObject(index++,?params.get(i));
			}
		}
		resultSet?=?pstmt.executeQuery();
		//getMetaData()獲取結果集的所有字段的描述
		ResultSetMetaData?metaData?=?resultSet.getMetaData();
		//得到數據集的列數
		int?cols_len?=?metaData.getColumnCount();
		while?(resultSet.next())?{
			Map<String,?Object>?map?=?new?HashMap<String,?Object>();
			for?(int?i?=?0;?i?<?cols_len;?i++)?{
				String?cols_name?=?metaData.getColumnName(i?+?1);
				Object?cols_value?=?resultSet.getObject(cols_name);
				if?(cols_value?==?null)?{
					cols_value?=?"";
				}
				map.put(cols_name,?cols_value);
			}
			list.add(map);
		}
		return?list;
	}