public static Boolean execute(List<String> sqls) throws ClassNotFoundException, SQLException {

		conn = getConnection();

		try {
			st = conn.createStatement();
			Iterator<String> sqlIter = sqls.iterator();
			while (sqlIter.hasNext()) {
				String sql = sqlIter.next();
				st.executeUpdate(sql);
			}
			conn.commit();
			conn.close();
			return true;
		} catch (Exception ex) {
			ex.printStackTrace();
			try {// 操作不成功则回退
				conn.rollback();
			}catch (Exception e) {
				e.printStackTrace();
			}
			return false;
		}
	}