代码如下：

            conn=DBConnector.getConn();
            String sql="SELECT * FROM ttt_goodsinfo";
            stmt=conn.createStatement();
            ResultSet rs=stmt.executeQuery(sql);
            while(rs.next()) {
                pm=new ProductModel();
                pm.setCode(rs.getString(1));
                pm.setName(rs.getString(2));
                pm.setCategory();       //如何从rs中拿到类型为enum的值？
                pm.setPrice(rs.getFloat(4));
                pm.setCommend(rs.getInt(5));
                pm.setDiscount(rs.getInt(6));
                list.add(pm);
            }