mybatis分页工具PageHelper中PageInfo相关属性

通常使用：

                Integer pageNo = 1;
        Integer pageSize = 10;
        try {
            pageNo = Integer.parseInt(Const.getPara(req, "page_no"));
        } catch (Exception ex) {
        }
        try {
            pageSize = Integer.parseInt(Const.getPara(req, "page_size"));
        } catch (Exception ex) {
        }
.......
     PageInfo<Comment> page = new PageInfo<Comment>(comments);
        if (pageNo > page.getLastPage()) {
            // pageno超过最大值
            return ResJson.getSucJson(ResJson.FAILD_NULL_CODE, ResJson.NOMORE_DATA_TEXT, maps);
        }
        for (int i = 0; i < comments.size(); i++) {
            maps.add(comment2MapWithReply(comments.get(i)));
        }

        return ResJson.getSucJson(ResJson.SUCCESS_CODE, ResJson.SUCCESS_CODE_TEXT, maps, pageNo + "",
                page.getPages() + "", page.getTotal() + "");