shop_cart.jsp

jsp网站编程技巧教程 想学jsp的来吧

<%@ page contentType="text/html;charset=gb2312"%>
<%@ page session="true" %>
<%@ page language="java" import="java.sql.*" %>
<jsp:useBean id="bka" scope="page" class="shop.bka" />
<%
String product_type;
String action;
int product_id;
int curpage;

if (request.getParameter("product_type")==null){
product_type="all";
}else{
product_type=request.getParameter("product_type");
}

if (request.getParameter("curpage")==null){
curpage=1;
}else{
curpage=java.lang.Integer.parseInt(request.getParameter("curpage"));
}

if (request.getParameter("action")==null){
action="view";
}else{
action=request.getParameter("action");
}

if (request.getParameter("product_id")==null){
product_id=1;
}else{
product_id=java.lang.Integer.parseInt(request.getParameter("product_id"));
}
int bbb;
bbb=1;
Integer num = new Integer(bbb);

session.putValue("shop_id",num);

session.putValue("guest_name","asp2001");
String guest_name=(String)session.getValue("guest_name");
Integer shop_id=(Integer)session.getValue("shop_id");
java.lang.String sql; 
java.sql.ResultSet rs;
if (action.compareTo("add")==0) {
sql="select cart_quantity from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id='" + guest_name + "' and cart_product_id=" + product_id ;
rs = bka.executeQuery(sql);
if (rs.next()){
int cart_quantity;
cart_quantity=java.lang.Integer.parseInt(rs.getString("cart_quantity"))+1;
sql="update shop_cart set cart_quantity=" + cart_quantity + " where cart_shop_id=" + shop_id + " and cart_guest_id='" + guest_name + "' and cart_product_id=" + product_id ;
rs = bka.executeQuery(sql);}
else
{
sql="insert into shop_cart (cart_shop_id,cart_guest_id, cart_product_id,cart_quantity) values ('" + shop_id + "','" +guest_name + "','" + product_id + "',1)";
rs = bka.executeQuery(sql);
}
}
if (action.compareTo("clear")==0) {
sql="delete from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id='" + guest_name + "'";
rs = bka.executeQuery(sql);
}
if (action.compareTo("delete")==0) { 
sql="delete from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id='" + guest_name + "' and cart_product_id=" + product_id ;
rs = bka.executeQuery(sql);
}
%>
<div align="center"><center>
<table border="0" cellpadding="0" cellspacing="0" width="610" height="2">
<tr>
<td>
<form method="POST" action="shop_cart.jsp?action=update&product_type=<%=product_type%>&curpage=<%=curpage%>">
<table border="0" cellpadding="0" cellspacing="0" width="610"  height="2">
<tr>
<td width="122" height="7"><div align="center"><center><table border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" bgcolor="#FFB468">
<tr>
<td width="100%"><div align="center"><center><p>购物车</td>
</tr>
</table>
</center></div></td>
<td width="122" height="7" style="border: medium" align="center"><div align="center"><center>
<table border="1" cellpadding="2" cellspacing="0" width="100%"  bordercolorlight="#FFB468" bordercolordark="#FFFFFF" bgcolor="#FFB468">
<tr>
<td width="100%"><div align="center"><center><p>
继续购物</td>
</tr>
</table>
</center></div></td>
<td width="122" height="7" style="border: medium" align="center"><div align="center"><center>
<table  border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" bgcolor="#FFB468">
<tr>
<td width="100%"><div align="center"><center><p>
<a href="javascript: document.forms[0].submit()">重新计费</a></td>
</tr>
</table>
</center></div></td>
<td width="122" height="7" style="border: medium"  align="center">
<div align="center"><center>
<table border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" bgcolor="#FFB468">
<tr>
<td width="100%"><div align="center"><center><p> 
<a href="shop_cart.jsp?action=clear&product_type=<%=product_type%>&curpage=<%=curpage%>">清空购物车</a></td>
</tr>
</table>
</center></div></td>
<td width="122" height="7" style="border: medium" align="center"><div align="center"><center>
<table border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" bgcolor="#FFB468">
<tr>
<td width="100%"><div align="center"><center><p>确认购买</td>
</tr>
</table>
</center></div></td>
</tr>
<tr align="center">
<td width="610" height="1" colspan="5"><div align="center"><center>
<table border="1" cellpadding="2" cellspacing="0" width="100%" bgcolor="#FDFEE2" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" height="40">
<tr>
<td width="20%" height="8" align="left">商品名称</td>
<td width="10%" height="8" align="left">市场价</td>
<td width="10%" height="8" align="left">优惠价</td>
<td width="10%" height="8" align="left">数量</td>
<td width="14%" height="8" align="left">小计</td>
<td width="12%" height="8" align="left">定金比例</td>
<td width="17%" height="8" align="left">定金小计</td>
<td width="17%" height="8" align="left">删除</td>
</tr>
<%
sql="select shop_product.product_id,shop_product.product_name, shop_product.product_price, shop_product.product_discount, shop_cart.cart_quantity,shop_product.product_first from shop_cart,shop_product where shop_cart.cart_shop_id=" + shop_id + " and shop_cart.cart_guest_id='" + guest_name + "' and shop_cart.cart_product_id=shop_product.product_id";
rs = bka.executeQuery(sql);
int total;
int total_first;
total=0;
total_first=0;
String product_name;
int product_price;
int product_discount;
int product_first;
int cart_quantity;
int ccc;
ccc = 0;
//if (rs.next()){
while (rs.next()) {
ccc ++;
product_id=java.lang.Integer.parseInt(rs.getString(1));
product_name=rs.getString(2);
product_price=java.lang.Integer.parseInt(rs.getString(3));
product_discount=java.lang.Integer.parseInt(rs.getString(4));
cart_quantity=java.lang.Integer.parseInt(rs.getString(5));
product_first=java.lang.Integer.parseInt(rs.getString(6));
%>
<tr>
<td width="10%" height="1" align="left"><%=product_name%></td>
<td width="10%" height="1" align="left"><%=product_price%></td>
<td width="10%" height="1" align="left"><%=product_discount%></td>
<td width="10%" height="1" align="left"><input type="text" name="<%= "t" + product_id %>" size="3" value="<%=cart_quantity%>"></td>
<td width="14%" height="1" align="left"><%=product_discount*cart_quantity%></td>
<td width="12%" height="1" align="left"><%=product_first + "%"%></td>
<td width="17%" height="1" align="left"><%=product_first*product_discount*cart_quantity/100.0%></td>
<td width="17%" height="1"><div align="center"><center><p>
<a href="shop_cart.jsp?action=delete&product_id=<%=product_id%>">delete</a></td>
</tr>
<%
total=total+product_discount*cart_quantity;
total_first=total_first+product_discount*cart_quantity*product_first/100;
}
%>
<tr align="center">
<td width="72%" colspan="6" height="16"><div align="right"><p>总计</td>
<td width="36%" colspan="2" height="16"><div align="left"><%=total%></td>
</tr>
<tr align="center">
<td width="72%" colspan="6" height="16"><div align="right"><p>定金总计</td>
<td width="36%" colspan="2" height="16">
<div align="left"><%=total_first%></td>
</tr>
<tr align="center">
<td width="72%" colspan="6" height="16"><div align="right"><p>结余</td>
<td width="36%" colspan="2" height="16">
<div align="left"><%=total-total_first%></td>
</tr>
</table>
</center></div>
<%
//}
//else{
if(ccc == 0){
%>
<p align="center">购物车为空!</p>
<%
}
%>