电子政务应用

开发平台：
Java

list.jsp：源码内容
							<%@ 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> 
<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%"><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></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="欢迎光临恽奚皓的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="欢迎光临恽奚皓的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="欢迎光临恽奚皓的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="欢迎光临恽奚皓的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="欢迎光临恽奚皓的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);
 String sConnStr="jdbc:microsoft:sqlserver://127.0.0.1:1433;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：
   <table border="1">
   <tr>
    <td>booktitle</td>
    <td>bookauthor</td>
    <td>price</td>
    <td>publichouse</td>
    <td>Quantity</td>
    <td>--------</td>
   </tr>
<% 
  isExist=false;
  Vector buyList=(Vector)session.getValue("shoppingcart");
  item=request.getParameter("item");
  int bookID;
  shop.Bookinfo cart=new shop.Bookinfo();
 try
  {
   bookID=Integer.parseInt(item);
   if(action.equals("add"))
   {
    cart.setId(id[bookID]);
    cart.setBookname(title[bookID]);
    cart.setAuthor(author[bookID]);
    cart.setPrice(price[bookID]);
    cart.setQuantity(1);
    cart.setPublichouse(pubhouse[bookID]);
    if (buyList==null)
    {
    buyList = new Vector();
    buyList.addElement(cart);
    }
   
    else
    {
      for (int i=0;i<buyList.size();i++)
      {
       int tempid=((shop.Bookinfo)buyList.elementAt(i)).getId();
       int tmp=((shop.Bookinfo)buyList.elementAt(i)).getQuantity();
           if(tempid==cart.getId())
           {
           isExist=true;
      ((shop.Bookinfo)buyList.elementAt(i)).setQuantity(tmp+1);
           }
        }
      if(!isExist)
      buyList.addElement(cart);
     }
 }
  if(action.equals("del"))
  {
    for (int i=0;i<buyList.size();i++)
     {
      int tempid=((shop.Bookinfo)buyList.elementAt(i)).getId();
       if (tempid==bookID)
       removeNo=i;
      }
      buyList.removeElementAt(removeNo);
   }
  session.putValue("shoppingcart",buyList);
  
  totalAmount=0;
     for(int i=0;i<buyList.size();i++)
     {
     out.println("<tr>");
     out.println("<td>");
out.println(((shop.Bookinfo)buyList.elementAt(i)).getBookname());
     out.println("</td>");
     out.println("<td>");
 out.println(((shop.Bookinfo)buyList.elementAt(i)).getAuthor()); 
    
     out.println("</td>");
     out.println("<td>");
     out.println(((shop.Bookinfo)buyList.elementAt(i)).getPrice());
     out.println("</td>");
     out.println("<td>");
out.println(((shop.Bookinfo)buyList.elementAt(i)).getPublichouse());
    out.println("</td>");
     out.println("<td>");
  
out.println(((shop.Bookinfo)buyList.elementAt(i)).getQuantity());
     out.println("</td>");
     out.println("<td>");
     int tmp=((shop.Bookinfo)buyList.elementAt(i)).getId();
    
int tmpQuantity=((shop.Bookinfo)buyList.elementAt(i)).getQuantity();
    float price=((shop.Bookinfo)buyList.elementAt(i)).getPrice();
    float booktotal=price*tmpQuantity;
    totalAmount=totalAmount+booktotal;
%>
     <A href="list.jsp?action=del&item=<%= tmp%>">暂时不购买：）</a>
<%
     out.println("</td>");
     out.println("</tr>");
     }
     out.println("</table>");
     out.println("total:"+totalAmount);
    out.println("<input type="submit" value="submit">");
   }
catch(Exception e)
{
out.println(e.getMessage());
}    
}
}
 %> 
</form>
</center>
</body>
</html>

						