详情页面报错问题-慕课网

详情页面报错问题

来源：8-8 使用Cookie实现保存商品浏览记录

qq__3590

2017-01-21 15:08

<%@page import="java.util.ArrayList"%>
<%@page import="com.entity.Items"%>
<%@page import="com.dao.ItemsDao"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>商品详情</title>
<style type="text/css">
   div{
       float: left;
       margin: 5px 30px;
   }
   div dd{
       margin: 0px;
       font-size: 10pt;
   }
   div dd dd_name{
       color: blue;
   }
   div dd dd_city{
       color: #000;
   }
</style>
</head>
<body>
   <h1>商品详情</h1>
   <center>
       <table width="750" height="60" cellpadding="0" cellspacing="0" border="0">
           <tr>
           
           <%
               ItemsDao itemsDao = new ItemsDao();
               Items items = itemsDao.getOne(Integer.parseInt(request.getParameter("id")));
               if(items!=null){
           %>
               <td width="70%">
                   <table>
                       <tr>
                           <td rowspan="4"><img alt="" src="images/<%=items.getPicture() %>>" width="200px" height="150px"></td>
                       </tr>
                       <tr>
                           <td><%=items.getName() %></td>
                       </tr>
                       <tr>
                           <td>产地：<%=items.getCity() %></td>
                       </tr>
                       <tr>
                           <td>价格：￥<%=items.getPrice() %></td>
                       </tr>
                   </table>
               </td>
               <%
               }
               %>
               <%
                   String list="";
                   //从客户端获得Cookies集合
                   Cookie[] cookies = request.getCookies();
                   //遍历cookies集合
                   if(cookies!=null&&cookies.length>0){
                       for(Cookie c : cookies){
                           if(c.getName().equals("ListViewCookie")){
                               list = c.getValue();
                           }
                       }
                   }
                   list+=request.getParameter("id")+"x";
                   //如果浏览记录超过10条，自动清零
                   String[] arr = list.split("x");
                   if(arr!=null&&arr.length>0){
                       if(arr.length>=10){
                           list=" ";
                       }
                   }
                   Cookie cookie = new Cookie("ListViewCookie",list);
                   response.addCookie(cookie);
               %>
               
               <td width="30%" background="#EEE" align="center">
                   <p>您浏览过的商品</p>
                   
                   <%
                       ArrayList<Items> itemList = itemsDao.getViewList(list);
                       if(itemList!=null&&itemList.size()>0){
                           System.out.println("itemList.size="+itemList.size());
                           for(Items i : itemList){
                   %>
                   <div>
                       <dl>
                           <dt>
                               <a href="detail.jsp?id=<%=i.getId()%>"><img alt="" src="images/<%=i.getId() %>" width="150px" height="100px" border="1"></a>
                           </dt>
                           <dd class="dd_name"><%=i.getName() %></dd>
                           <dd class="dd_city">城市：<%=i.getCity() %>  价格：￥<%=i.getPrice() %></dd>
                       </dl>
                   </div>
                   <%
                           }
                       }
                   %>
                   
               </td>
           </tr>
       </table>
   </center>
</body>
</html>