@SuppressWarnings("unchecked")
	public FileBean getFileSingle(String savename) throws SQLException {
		FileBean single = null;
		String sql = "select * from tb_file where file_savename=?";
		Object[] params = { savename };
		List list = getList(sql, params);
		if (list != null && list.size() != 0)
			single = (FileBean) list.get(0);
		return single;
	}