我用JSP做了个购物车的代码,在有个页面出了问题 希望各位帮我看看额
代码其实几乎都是我下载的,我只是在每个每个的去解读这些代码,但后面的list.jsp的页面出了问题,但不知道怎么修改,希望高手能帮我看看额,我在那个页面里不希望更多的功能,只是要“加入购物车”后在下面显示购物车里的内容就可以了.... 能帮帮忙吗,??明天就教了 但愿有高手在今晚看到我的这篇文章额... 它里面的功能就只要我刚说的加入购物车后显示购物车里的东西就可以额... 实在没有办法啊,看了一个多星期的JSP ,SQL,很努力的看那些代码了.... 高手们 帮我看看额... 我给100分..
那个LIST.JSP的代码如下
[size=10px]<%@ page session="true" %>
<%@ page import="java.sql.*,java.util.*" %>
<html>
<head>
<title>JSP在线书店</title>
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head>
<%
String loginSign=(String)session.getValue("loginSign");
if(loginSign.equals("OK"))
{
%>
<body bgcolor="#F4F5FF" onLoad="MM_preloadImages('images/bb1_1.jpg','images/bb2_1.jpg','images/bb3_1.jpg','images/bb4_1.jpg','images/bb5_1.jpg')">
<font face="Times New Roman,Times" size="+3"> </font>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="540" height="120">
<param name="movie" value="images/8.swf">
<param name="quality" value="high">
<embed src="images/8.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="540" height="120"></embed>
</object>
<table width="78%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="20%"><img src="images/logo.jpg" width="230" height="120"></td>
<td width="80%"> </td>
</tr>
</table>
<hr>
<p>
<center>
<b><font color="#3300CC" size="+3" face="华文行楷">JSP在线书店</font></b>
<table border="1">
<tr> <td width="72"><a href="#" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image1','','images/bb1_1.jpg',1)"><img src="images/bb1.jpg" alt="欢迎光临朱银香的JSP书店" name="Image1" width="160" height="46" border="0"></a></td>
<td width="80"><a href="#" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image2','','images/bb2_1.jpg',1)"><img src="images/bb2.jpg" alt="欢迎光临朱银香的JSP书店" name="Image2" width="160" height="45" border="0"></a></td>
<td width="40"><a href="#" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image3','','images/bb3_1.jpg',1)"><img src="images/bb3.jpg" alt="欢迎光临朱银香的JSP书店" name="Image3" width="160" height="45" border="0"></a></td>
<td width="88"><a href="#" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image4','','images/bb4_1.jpg',1)"><img src="images/bb4.jpg" alt="欢迎光临朱银香的JSP书店" name="Image4" width="160" height="45" border="0"></a></td>
<td width="68"><a href="#" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image5','','images/bb5_1.jpg',1)"><img src="images/bb5.jpg" alt="欢迎光临朱银香的JSP书店" name="Image5" width="160" height="45" border="0"></a></td>
</tr>
<%! String item;%>
<%! String[] title,author,pubhouse;%>
<%! float[] price;%>
<%! int[] id;%>
<%! float totalAmount; %>
<%! int count,removeNo,i; %>
<%! boolean isExist;%>
<%
try
{
String sDBDriver="com.microsoft.jdbc.sqlserver.SQLServerDriver";
Class.forName(sDBDriver).newInstance();
String sConnStr="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Web";
String username="sa";
String password="";
Connection connWeb=DriverManager.getConnection(sConnStr,username,password);
Statement stmt=connWeb.createStatement();
String query="select bookname,author,price,publichouse,bookid from book_info";
ResultSet rs=stmt.executeQuery(query);
i=0;
while(rs.next())
{
i++;
}
title=new String[i];
author=new String[i];
pubhouse=new String[i];
price=new float[i];
id=new int[i];
i=0;
rs=stmt.executeQuery(query);
while(rs.next())
{
title[i]=rs.getString(1);
author[i]=rs.getString(2);
price[i]=rs.getFloat(3);
pubhouse[i]=rs.getString(4);
id[i]=rs.getInt(5);
%>
<tr>
<td><%= title[i] %></td>
<td><%= author[i] %></td>
<td><%= price[i] %></td>
<td><%= pubhouse[i] %></td>
<td><A href="list.jsp?action=add&item=<%= i%>"><img src="images/wing_20.jpg" width="160" height="46"></a></td>
</tr>
<%
i++;
}
rs.close();
stmt.close();
connWeb.close();
}
catch(Exception e)
{
out.println(e.getMessage());
}
%>
</table>
<%
String action=request.getParameter("action");
if(action!=null)
{
%>
<form action="purchase.jsp" mothod="post">
您的购物车中有以下物品: