java实现分页

private Integer cur_page = new Integer(1);//当前页
private Integer total_page = new Integer(1);//总页数
private Integer total_count = new Integer(0);//总行数
private Integer count_page = new Integer(20);//每页行数
//计算   总页数=总行数/每页条数+(不能整除就+1)
this.total_page = this.total_count/this.count_page+(this.total_count%this.count_page==0?0:1);
//计算   每页起始页=(当前页-1)*每页行数
this.cur_page = (this.cur_page-1)*this.total_count;

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!doctype html>
<html lang="en">
 <head>
  <meta charset="UTF-8">
  <meta name="Generator" content="EditPlus®">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <title>Document</title>
 </head>
 <body>
   <c:if test="${cur_page > 0 && cur_page <= total_page}">
	<a href="${pageContext.request.contextPath}/waporder/myOrder?page=${cur_page+1}">下 一 页</a>
	<a href="${pageContext.request.contextPath}/waporder/myOrder?page=${cur_page-1}">上 一 页</a>
  </c:if>
  <c:if test="${cur_page < 1 }">已到达首页
	<a href="${pageContext.request.contextPath}/waporder/myOrder?page=${cur_page+1}">下 一 页</a>
  </c:if>
  <c:if test="${cur_page > total_page }">已到达尾页
	<a href="${pageContext.request.contextPath}/waporder/myOrder?page=${cur_page-1}">上 一 页</a>
  </c:if>
   <c:forEach items="${orderList}" var="ord">
	<c:if test="${ord.wxOrderStatus=='新建' }">
		<ul>
			<li><a
				href="${pageContext.request.contextPath}/waporder/orderDetail?danhao=${ord.wxDanhao}&type=${ord.wxOrderStatus}">
					<div
						style="color: #000; line-height: 30px; padding: 0px 10px;">
						编号：&nbsp;&nbsp;&nbsp;${ord.wxDanhao}<span
							style="float: right">${ord.wxOrderXiadanshijian}</span><br />
						${ord.wxOrderXiaolei}<span style="margin-left: 30px;">${ord.wxOrderPingpai}</span>
						<span style="float: right">${ord.wxOrderFuwuleixin}
							<span style="margin-left: 30px; color: #83caf7;">${ord.wxOrderStatus}</span>
						</span><br /> 描述：&nbsp;&nbsp;&nbsp;${ord.wxOrderGuzhangjianshu}
						<br/><span>${ord.wxAddress.wxAddressProvince}${ord.wxAddress.wxAddressCity}${ord.wxAddress.wxAddressDistrict}${ord.wxAddress.wxAddressDetailed}</span>
					</div>
			</a></li>
		</ul>
	</c:if>
	</c:forEach>
 </body>
</html>

@RequestMapping(value = "myOrder", method = RequestMethod.GET)
	public String  myOrder( HttpSession session,Model model,String page,String type) {
		WxUser user = null;
		Integer pageInt = 1;//首页    默认
		Integer rowsInt = 25;//每页条数
		Integer total_page = 1 ;//总页数   默认
		Long total = 1l;//总条数      默认
		if(StringUtils.isNotBlank(page)){
			pageInt = Integer.parseInt(page);
		}
		try{
		   user = getCurrentUser(session);
		   if(user == null){
			   return "/wap/logo";
		   }
		}catch(Exception e){
			e.printStackTrace();
			return "/wap/logo";
		}
		List<WxOrder> orderList = null;
		try{
			total = orderService.getMyOrdersCount(user);
			if(null!=total && total.intValue() > 0 ){
				total_page =  total.intValue()/rowsInt+(total.intValue()%rowsInt==0?0:1);
			}
			 
			if(pageInt > 0 && pageInt <= total_page){				
				orderList = orderService.getOrderList( user , (pageInt-1)*rowsInt, rowsInt);
				model.addAttribute("orderList",orderList);
			}
		}catch(Exception e){
			e.printStackTrace();
		}
		
		model.addAttribute("cur_page",pageInt);
		model.addAttribute("total_page",total_page);                       
		return "/wap/myorder";
	}

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