java中从数据库中取数据方法

String Hql = "from Users as t where t.name = ? and t.password = ?";
		List list = this.commDAO.getHibernateTemplate().find(Hql, new Object[] { user.getName(), user.getPassword() });

这个比用jdbctemplate一个一个赋值快

List result = this.jdbcService.getJdbcTemplate().queryForList(sql);
			List<String> powerList = new ArrayList<String>();
			Iterator iterator = result.iterator();
			while (iterator.hasNext()) {
				Map itmap = (Map) iterator.next();
				String s = (String) itmap.get("POWER");
				
			}

Session s = this.getHibernateTemplate().getSessionFactory().openSession();
		Connection conn;
		Statement stmt = null;


		try {
			conn = s.connection();
			stmt = conn.createStatement();
			stmt.executeUpdate(sql);// .execute(sql);


		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			try {
				stmt.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			s.disconnect();
			s.close();
		}

public String SelectOneFieldValue(String sql, String fieldName) throws Exception {
		String value = null;
		Connection conn = this.getSession().connection();
		Statement statement = conn.createStatement();


		ResultSet rs = statement.executeQuery(sql.toString());
		while (rs.next()) {
			value = rs.getString(fieldName);
		}
		rs.close();
		statement.close();


		return value;
	}