java操作数据库相关

ResultSet相关：

/*				A ResultSet cursor is initially positioned before the first row; 
				the first call to the method next makes the first row the current row; 
				the second call makes the second row the current row, and so on. */

				if (resultSet.next()) {
//					resultSet.previous();
					responseResult.append(resultSet.getString("max"));
				}