package com.example.demo.utils;import java.util.ArrayList;
import java.util.List;/*** 封装分页对象**/
public class PageList {private int page;   //当前页private int totalRows;   //总行数private int pages;    //总页数private List list=new ArrayList();public int getPage() {return page;}public void setPage(int page) {this.page = page;}public int getPages() {return pages;}public void setPages(int pages) {this.pages = pages;}public List getList() {if(list==null){list=new ArrayList();}return list;}public void setList(List list) {this.list = list;}public int getTotalRows() {return totalRows;}public void setTotalRows(int totalRows) {this.totalRows = totalRows;}
}

@GetMapping("/findAllbyPager")@ResponseBodypublic PageList findAllbyPager(int pagenum, int pagerow) {PageList pageList = new PageList();if(pagenum == 0){pagenum=1;}if(pagerow == 0){pagenum=30;}List<User> list= userService.findAllbyPage(pagenum, pagerow );int TotalRows = userService.countAll();pageList.setPage(pagenum);pageList.setTotalRows(TotalRows);int pages= 0;if(TotalRows % pagerow == 0){ pages = TotalRows / pagerow;}else { pages = TotalRows / pagerow +1 ;}System.out.println("目前分页的总页数是"+pages);pageList.setPages(pages);pageList.setList(list);return pageList;}

 @Overridepublic List<User> findAllbyPage(int pagenum, int pagerow) {int starter = (pagenum-1)*pagerow;String sql = "select id, name, age from user order by id asc  limit " + starter +" , "+ pagerow;List<User> list = jdbcTemplate.query(sql,new UserRowMapper());return list;}