//entity层实体类

import java.util.List;

//分页展示

//相关属性：当前页，页大小(每页显示的条数)，总页数，总条数，数据

//select * from t_user limit 3,3

public class Page {

private Integer currentPage; //当前页

private Integer pageSize; //页大小

private Integer pageCount; //页数量

private Integer totalCount; //总条数

private List> list; //数据

private String url; //参数路径

public Integer getCurrentPage() {

return currentPage;

}

public void setCurrentPage(Integer currentPage) {

this.currentPage = currentPage;

}

public Integer getPageSize() {

return pageSize;

}

public void setPageSize(Integer pageSize) {

this.pageSize = pageSize;

}

public Integer getPageCount() {

return pageCount;

}

public void setPageCount(Integer pageCount) {

this.pageCount = pageCount;

}

public Integer getTotalCount() {

return totalCount;

}

public void setTotalCount(Integer totalCount) {

this.totalCount = totalCount;

}

public List> getList() {

return list;

}

public void setList(List> list) {

this.list = list;

}

public String getUrl() {

return url;

}

public void setUrl(String url) {

this.url = url;

}

@Override

public String toString() {

return "Page [currentPage=" + currentPage + ", pageSize=" + pageSize + ", pageCount=" + pageCount

+ ", totalCount=" + totalCount + ", list=" + list + ", url=" + url + "]";

}

public Page(Integer currentPage, Integer pageSize, Integer pageCount, Integer totalCount, List> list,

String url) {

this.currentPage = currentPage;

this.pageSize = pageSize;

this.pageCount = pageCount;

this.totalCount = totalCount;

this.list = list;

this.url = url;

}

public Page() {

}

public Page(Integer currentPage, Integer pageSize) {

this.currentPage = currentPage;

this.pageSize = pageSize;

}

}

// servlet层 (分页相关代码)

//-----直接做分页展示-----

String current = request.getParameter("currentPage");

Page page = goodsInfoService.getPage(current);

request.setAttribute("page", page);

//service层相关代码

public Page getPage(String current) {

Integer currentPage = 1;

Integer pageSize = 5;

if(current != null){

currentPage = Integer.parseInt(current);

}

Page page = new Page(currentPage, pageSize); //当前页和页大小的赋值

Integer totalCount = goodsInfoDao.getTotalCount();

page.setTotalCount(totalCount); //设置总数

Integer pageCount = totalCount/pageSize;

pageCount=totalCount%pageSize==0?pageCount:pageCount+1;

page.setPageCount(pageCount); //设置页数量

Integer startIndex = (currentPage-1)*pageSize;

List list = goodsInfoDao.getGoodsInfoListPage(startIndex, pageSize);

page.setList(list); //设置数据

page.setUrl("GoodsInfoServlet?action=goodsInfoList"); //设置url

return page;

}

//Dao相关分页代码

public int getTotalCount() { // 获取总记录数

String sql="select count(1) from t_goods_info";

return CommonUtils.getTotalCount(sql);

}

//jquery 相关分页代码

首页

上一页

下一页

尾页

共${page.currentPage}/${page.pageCount}页