【方法2】藉助ResultSetMetaData 和Map

private static List convertList(ResultSet rs) throws SQLException {

        List list = new ArrayList();

        ResultSetMetaData md = rs.getMetaData();

        int columnCount = md.getColumnCount();

        while (rs.next()) {

            Map rowData = new HashMap();

            for (int i = 1; i <= columnCount; i++) {

                rowData.put(md.getColumnName(i), rs.getObject(i));

            }

            list.add(rowData);

        }

        return list;

}