public static boolean insertSQL(String date, String timestart,
			String timeend, String text) {
		String sql = "insert into datetable values('" + date + "','"
				+ timestart + "','" + timeend + "','" + text + "')";
		try {
			statement = conn.prepareStatement(sql);
			statement.executeUpdate();
			return true;
		} catch (SQLException e) {
			System.out.println("ݿʱ");
			e.printStackTrace();
		} catch (Exception e) {
			System.out.println("ʱ");
			e.printStackTrace();
		}
		return false;
	}