java实现数据库分页

/***
 * 工具类
 * @param pageIndex //页码
 * @param pageSize//每页数据的条数
 * @param rowCount//总的数据条数
 * @return
 */
    private List<Map<String, Object>> Pagination(int pageIndex, int pageSize, long rowCount){
        int pageCount=0;//总页码
        
        if (rowCount%pageSize>0)
          {
           pageCount = (int)(rowCount/pageSize + 1);
          } else
          {
           pageCount = (int)(rowCount/pageSize);
          }
        Map<String, Object> map =new HashMap<String, Object>();
        map.put("totalPage",pageCount);//总页数
        map.put("curPage", pageIndex);//当前页码
        map.put("pageSize", pageSize);//每页的数据条数
        map.put("countTotal", rowCount);//总的数据条数
        List<Map<String, Object>> list =new ArrayList<Map<String,Object>>();
        list.add(map);
        return list;
        
    }


/***

分页查询例子

***/

    public List hysgl_cxhylx(int pageSize, int pageNum) throws SQLException {
        String sql = "select top "+pageSize+"* from HYS_LX where ID not in(select top "+(pageNum-1)*pageSize+" ID from HYS_LX order by ID) order by ID"; 
        System.out.println(sql);
            List list1 = TestDao.readall(sql);
            List<Map<String, Object>> list2 =TestDao.readall("select count(*) as count from HYS_LX");
            int counttotal=Integer.parseInt((String)list2.get(0).get("count"));
            List<List<Map<String, Object>>> list =new ArrayList<List<Map<String,Object>>>();
            list.add(list1);
            list.add(Pagination(pageNum, pageSize, counttotal));
                return list;
    }