* Mybatis - 通用分頁攔截器<br/>
* 項目地址 : http://git.oschina.net/free/Mybatis_PageHelper
一、分頁total拷貝
PageInfo<TShopOrderEntity> selectByExample = new ArrayList（）；
PageInfo<ShopOrderReqVo> shopOrderReqVoList = new ArrayList<>();
//拷貝total
PageInfo<TShopOrderEntity> pageInfo1 = new PageInfo<>(selectByExample);
PageInfo<ShopOrderReqVo> pageInfo = new PageInfo<>(shopOrderReqVoList);
pageInfo.setTotal(pageInfo1.getTotal());
將selectByExample的total值拷貝到shopOrderReqVoList中