2020.05.15 分页查询的service模块

package cn.itcast.travel.service.impl;

import cn.itcast.travel.dao.RouteDao;
import cn.itcast.travel.dao.impl.RouteDaoImpl;
import cn.itcast.travel.domain.PageBean;
import cn.itcast.travel.domain.Route;
import cn.itcast.travel.service.RouteService;

/**
 * @author aojie
 * @fuction
 * @create 2020-05-15 22:14
 */
public class RouteServiceImpl implements RouteService {
    private RouteDao dao=new RouteDaoImpl();
    @Override
    public PageBean<Route> pageQuery(int cid, int currentPage, int pageSize) {
        int total=dao.findTotalCount(cid);
        int totalPage=total%pageSize==0?total/pageSize:(total/pageSize)+1;
        PageBean<Route> pageBean = new PageBean<>();
        pageBean.setCurrentPage(currentPage);
        pageBean.setTotalCount(total);
        pageBean.setPageSize(pageSize);
        pageBean.setList(dao.findByPage(cid,(currentPage-1)*pageSize,pageSize));
        pageBean.setTotalPage(totalPage);
        return pageBean;

    }
}