public List<Answersheet> listAllAnswersheet(Long surveyId) {
		SQLCommand cmd = new SQLCommand();
		RowSet rs = cmd.queryRowSet("select * from answersheet where s_id="+ surveyId+" order by as_postdate desc");
		Answersheet answersheet;
		List<Answersheet> list = new ArrayList<Answersheet>();
		try {
			while (rs.next()) {
				answersheet=new Answersheet();
				answersheet.setAsId(rs.getLong("as_id"));
				  answersheet.setSurvey(rs.getLong("s_id"));
				  answersheet.setAsResult(rs.getString("as_result"));
				  answersheet.setAsPostdate(rs.getDate("as_postdate"));
				  answersheet.setAsUserIp(rs.getString("as_userip"));
				list.add(answersheet);
			}

			return list;

		} catch (SQLException e) {

			e.printStackTrace();
		}
		return null;
	}