WebRoot/shengchengdingdan_add.jsp

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<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@page import="util.Info"%>
<%@page import="dao.CommDAO"%>
<%@page import="util.PageManager"%>
<html>
  <head>
    
    <title>生成订单</title>
	<!--bixanjxiqxi-->
	<LINK href="css.css" type=text/css rel=stylesheet>
    <script type="text/javascript" src="js/My97DatePicker/WdatePicker.js" charset="gb2312"></script>
	<script type="text/javascript" src="js/popup.js"></script>
	   
  </head>
  <%
   String zongjinez="";
  zongjinez=request.getParameter("zongjinez");
if(request.getParameter("zongjinez")!=null){
  if(Float.valueOf(zongjinez).floatValue()==0)
{
	out.print("<script>alert('对不起,您没有未下单的商品!');location.href='goumaijilu_list2.jsp';</script>");
	return;
}
}
//这种写法先判断不为空，因为在提交按钮点了之后，会跳转回这个页，而zongjinez此时是空的，因为跳转时重新刷新了页面，而zongjinez是上个页传过来的，本身这个页并没有值
//另一种写法：String sql3=  "select * from goumaijilu where goumairen='"+request.getSession().getAttribute("username")+"' and issh='否'";
//CommDAO dao = new CommDAO();
  //List<HashMap> userlist1 = dao.select(sql3);

  //if(userlist1.size()==0)
//{
	//out.print("<script>alert('对不起,您没有未下单的商品!');location.href='goumaijilu_list2.jsp';</script>");
	//return;
//}
//这种写法判断了能不能查询到未下单的记录，找不到则提示

  %>
  
<%
//xuxyaxodenxglxu


  String id="";
 

  String shanpianbianhaoz="";
  String shanpianmingchengz="";
  String goumaishuliangz="";
  String shanpianxinxiz="";
  String sql2=  "select * from goumaijilu where goumairen='"+request.getSession().getAttribute("username")+"' and issh='否'";
  ArrayList<HashMap> list = PageManager.getPages("",15,sql2, request); 
	int i=0;
	for(HashMap map:list){ 
	i++;
	//wxflzhistri
	
	shanpianxinxiz=shanpianxinxiz+"商品编号："+(String)map.get("shangpinbianhao")+",商品名称："+(String)map.get("shangpinmingcheng")+",购买数量："+(String)map.get("goumaishuliang")+";";
	}

//txixgihxngjs