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jsp简单购物车代码

发布时间: 2021-03-04 10:36:14

❶ JSP简单购物车

[email protected]
楼主直接留邮箱吧，给你个项目自己改下就行了，功能全部实现了

❷ 求JSP大神帮小弟看看这个简易购物车应用代码应该怎么写。

session.setAttribute(“attribute”,value);
session.getAttribute();

这不就是？

❸ Jsp写的购物车代码

这是其中的一段代码,要项目的话加445899710
HttpSession session = request.getSession(false);

if(session==null){
dispatcher = request.getRequestDispatcher("show.jsp");
dispatcher.forward(request, response);
}

FoodBean foodBean = (FoodBean)session.getAttribute("FoodToAdd");
Map cart = (Map)session.getAttribute("cart");

if(cart==null){
cart = new HashMap();
session.setAttribute("cart", cart);
}

CartItemBean cartItem = (CartItemBean)cart.get(foodBean.getFoodID());
if(cartItem==null){
cart.put(foodBean.getFoodID(), new CartItemBean(foodBean,1));
}else{
cartItem.setNumber(cartItem.getNumber()+1);
}

❹ jsp购物车代码

//shopping.html
<html>
<head><title>shopping stor</title></head>
<body>
<form action="carts.jsp" target="post">
<br>
please select the item that you want to buy
<br>
<select name="item">
<option>book:old man and the sea
<option>x-box game machine
<option>mp3 player
<option>cce
<option>book:jsp programming
<option>cd "the endless love"
<option>dvd "gone with the wind"
</select>
<br>
<input type="submit" name="submit" value="add">
<input type="submit" name="submit" value="remove">
</form>
</body>

</html>
------------------------------------------------------------------
//carts.jsp
<%@page contentType="text/html;charset=ISO8859_1" %>
<html>
<jsp:useBean id="cart" scope="session" class="test.DummyCart"/>
<jsp:setProperty name="cart" property="*"/>

<%
cart.processRequest();
%>
<br>
<ol>
you have chosen these items:
<%
String []items=cart.getItems();
for(int i=0;i<items.length;i++)
{
%>
<li><%=items[i] %></li>
<%
}
%>
</ol>
<hr>
<%@include file="shopping.htm" %>

</html>
---------------------------------------------------------------------//DummyCart.java
package test;
import javax.servlet.http.*;
import java.util.Vector;
import java.util.Enumeration;
public class DummyCart
{
Vector v = new Vector();
String submit=null;
String item= null;
private void addItem(String name)
{
v.addElement(name);
}

private void removeItem(String name)
{
v.removeElement(name);
}

public void setItem(String s)
{
item=s;
}

public void setSubmit(String s)
{
submit=s;
}

public String[] getItems()
{
String []s=new String[v.size()];
v.Into(s);
return s;
}

public void processRequest()
{
if(submit==null)
addItem(item);
if(submit.equals("add"))
addItem(item);
else if (submit.equals("remove"))
removeItem(item);
reset();
}

private void reset()
{
submit=null;
item=null;
}

}

----------------------------------------------------------------------
上面是一个简单的例子，功能都能实现，对网页效果要求更漂亮些的可做一些修改。

❺ 求jsp购物车代码

太长了
复制不下

❻ 求ejb+jsp实现简单购物车功能的代码

修改下述的例子，增加web功能

（1）提供登录页面Login.jsp；
只需要登录名与密码（可在程序中硬编码）
（2）图书列表页面
列出所有可出售的图书供用户选择；
图书只需给出图书名（可在程序中硬编码）
（3）提供购物车商品的管理页面：
能够向购物车中添加图书（从图书列表中选择）；
能够删除购物车中的图书；
能够察看购物车中的图书信息
（4）用户可主动退出系统

一个EJB例子如下（购物车）
import java.util.*;
import javax.ejb.Stateful;
import javax.ejb.*;

@Stateful(mappedName="cart")
public class CartBean implements Cart{
String customerName;
String customerId;
List<String> contents;
//ArrayList<String> contents;

public void initialize(String person) throws BookException {
if (person == null) {
throw new BookException("不允许没有用户！");
} else {
customerName = person;
}
customerId = "0";
contents = new ArrayList<String>();
}

public void initialize(String person, String id)
throws BookException {
if (person == null) {
throw new BookException("不允许没有用户！");
} else {
customerName = person;
}
IdVerifier idChecker = new IdVerifier();
if (idChecker.validate(id)) {
customerId = id;
} else {
throw new BookException("无效的ID: " + id);
}
contents = new ArrayList<String>();
}

public void addBook(String title) {
contents.add(title);
}
public void removeBook(String title) throws BookException {
boolean result = contents.remove(title);
if (result == false) {
throw new BookException(title + " 不在购物车中。");
}
}
public List<String> getContents() {
return contents;
}
@Remove()
public void remove() {
contents = null;
}
}

❼ JSP购物车代码详解

SELECT 1
SCAN
SCATTER MEMVAR
SELECT 2
APPEND BLANK
GATHER MEMVAR
ENDSCAN

❽ 如何用java和jsp做一个简单的购物车

页面jsp ：

<%@pagelanguage="java"contentType="text/html;charset=utf-8"
pageEncoding="utf-8"%>
<%@taglibprefix="c"uri="
<%@tagliburi="

<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""
<htmlxmlns="
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
<title>易买网-首页</title>
<linktype="text/css"rel="stylesheet"href="${pageContext.request.contextPath}/css/style.css"/>
<scripttype="text/javascript"src="${pageContext.request.contextPath}/js/jquery-2.1.1.js"></script>
<scripttype="text/javascript">
varcontextPath='${pageContext.request.contextPath}'
</script>
<scripttype="text/javascript"src="${pageContext.request.contextPath}/js/shopping.js"></script>
</head>
<body>
<jsp:includepage="top.jsp"/>
<divid="position"class="wrap">
	您现在的位置：<ahref="Home">易买网</a>&gt;购物车
</div>
<divclass="wrap">
	<divid="shopping">
		<formaction=""method="post">
			<table>
				<tr>
					<th>商品名称</th>
					<th>商品价格</th>
					<th>购买数量</th>
					<th>操作</th>
				</tr>
				<c:forEachitems="${sessionScope.shopCar}"var="item"varStatus="status">
				<trid="proct_id_${item.proId}">
					<tdclass="thumb"><imgsrc="${item.proImg}"height="50"width="30"/><ahref="Proct?action=view&entityId=${item.proId}">${item.proName}</a></td>
					<tdclass="price"id="price_id_1">
						<span><fmt:formatNumbervalue="${item.proPrice}"type="NUMBER"minFractionDigits="2"/></span>
						<inputtype="hidden"value="${item.proPrice}"/>
					</td>
					<tdclass="number">
						<dl>
							<dt><spanonclick="sub('number_id_${item.proId}','${item.proId}')">－</span><inputid="number_id_${item.proId}"type="text"readonly="readonly"name="number"value="${item.proNum}"/><spanonclick="addNum('number_id_${item.proId}','${item.proId}')">＋</span></dt>
							
						</dl>
					</td>
					<tdclass="delete"><ahref="javascript:deleteItem('proct_id_${item.proId}','${item.proId}')">删除</a></td>
				</tr>
				</c:forEach>
			</table>
			<divclass="button"><inputtype="submit"value=""/></div>
		</form>
	</div>
</div>
<divid="footer">
	Copyright&;kaka292817678itjob远标培训.
</div>
</body>
</html>



页面关联的js 自己去网上下载一个jquery
/*数量减少*/
functionsub(id,proId){
	//购买数量的值
	varnum=$('#'+id).val();
	if(num>1){
		$('#'+id).val(num-1);
	}
	
	edit(id,proId);
	
}

functionedit(id,proId){
	varurl=contextPath+'/HomeCarManager'
	//修改后的数量，购物明细的商品的id
	num=$('#'+id).val();
	$.post(url,{"num":num,"proId":proId},function(msg){
		/*
		if(msg=='true'){
			alert('修改成功');
		}else{
			alert('修改失败');
		}*/
	});
}
/**
*数量增加
*@param{}id
*/
functionaddNum(id,proId){
	//购买数量的值
	varnum=$('#'+id).val();
	$('#'+id).val(parseInt(num)+1);	
	edit(id,proId);
}

/**
*删除购物明细
*/
functiondeleteItem(trId,proId){
	//
	//console.log($("#"+trId));
	//js删除页面节点
	//$("#"+trId).remove();
	varurl=contextPath+'/HomeCarManager'
	$.post(url,{"proId":proId},function(msg){
		if(msg=='true'){
			//js删除页面节点
			$("#"+trId).remove();
		}
	});
	
}



后台servlet1
packagecom.kaka.web;

importjava.io.IOException;
importjava.io.PrintWriter;
importjava.util.ArrayList;
importjava.util.List;

importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServlet;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
/**
*购物车处理类
*@author@authorITJob远标培训
*
*/

importcom.kaka.entity.Items;
importcom.kaka.entity.Proct;
importcom.kaka.service.ProctService;
importcom.kaka.service.impl.ProctServiceImpl;
{

	=1L;
	ProctServiceps=newProctServiceImpl();
	@Override
	protectedvoiddoPost(HttpServletRequestreq,HttpServletResponseresp)throwsServletException,IOException{
		//获取商品的id
		StringproId=req.getParameter("proId");
		resp.setContentType("text/html;charset=UTF-8");
		PrintWriterwriter=resp.getWriter();
		if(null!=proId&&!"".equals(proId)){
			//返回添加购物车成功
			//System.out.println("============="+proId);
			//根据商品的id查询商品
			try{
				IntegerpId=Integer.parseInt(proId);
				Proctproct=ps.findProctById(pId);
				if(null!=proct){
					//查询到了商品，将商品的相关参数构建一个购物明细放入到购物车
					Itemsit=newItems();
					it.setProId(proct.getProId());
					it.setProName(proct.getProName());
					it.setProPrice(proct.getProPrice());
					it.setProImg(proct.getProImg());
					
					//先判断session范围是否有购物车
					List<Items>shopCar=(List<Items>)req.getSession().getAttribute("shopCar");
					if(null==shopCar){
						//购物车
						shopCar=newArrayList<Items>();
					}
					//将商品加入到购物车之前，判断购物车中是否已经包含了该购物明细，如果包含了，只需要修改购买的数量
					if(shopCar.contains(it)){
						intindex=shopCar.indexOf(it);//寻找购物车中包含购物明细在购物车中位置
						Itemsitems=shopCar.get(index);//获取购物车中存在的购物明细
						items.setProNum(items.getProNum()+1);
					}else{
						shopCar.add(it);
					}
					
					
					//将购物车放入到session访问
					req.getSession().setAttribute("shopCar",shopCar);
					//返回
					writer.print(true);
				}else{
					writer.print(false);
				}
			}catch(Exceptione){
				e.printStackTrace();
				writer.print(false);
			}
		}else{
			writer.print(false);
		}
		writer.flush();
		writer.close();
	}
	@Override
	protectedvoiddoGet(HttpServletRequestreq,HttpServletResponseresp)throwsServletException,IOException{
		doPost(req,resp);
	}
}



后台管理servlet
packagecom.kaka.web;

importjava.io.IOException;
importjava.io.PrintWriter;
importjava.util.ArrayList;
importjava.util.List;

importjavax.mail.FetchProfile.Item;
importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServlet;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
/**
*购物车修改
*@authorITJob远标培训
*
*/

importcom.kaka.entity.Items;
importcom.kaka.entity.Proct;
importcom.kaka.service.ProctService;
importcom.kaka.service.impl.ProctServiceImpl;
{

	=1L;
	ProctServiceps=newProctServiceImpl();
	@Override
	protectedvoiddoPost(HttpServletRequestreq,HttpServletResponseresp)throwsServletException,IOException{
		resp.setContentType("text/html;charset=UTF-8");
		PrintWriterwriter=resp.getWriter();
		//获取参数
		StringproId=req.getParameter("proId");
		Stringnum=req.getParameter("num");
		if(null!=proId&&null!=num
				&&!"".equals(proId)&&!"".equals(num)){
			try{
				IntegerpId=Integer.parseInt(proId);
				FloatpNum=Float.parseFloat(num);
				
				//根据商品的id获取对应的明细项
				//先判断session范围是否有购物车
				List<Items>shopCar=(List<Items>)req.getSession().getAttribute("shopCar");
				for(Itemsit:shopCar){
					if(it.getProId()==pId){
						it.setProNum(pNum);
					}
				}
				writer.print(true);
			}catch(Exceptione){
				e.printStackTrace();
			}
		}else{
			//删除的操作
			try{
				IntegerpId=Integer.parseInt(proId);
				//根据商品的id获取对应的明细项
				//先判断session范围是否有购物车
				List<Items>shopCar=(List<Items>)req.getSession().getAttribute("shopCar");
				Itemsitems=null;
				for(Itemsit:shopCar){
					if(it.getProId()==pId){
						items=it;
						break;
					}
				}
				if(null!=items){
					shopCar.remove(items);
					req.getSession().setAttribute("shopCar",shopCar);
				}
				
				writer.print(true);
			}catch(Exceptione){
				e.printStackTrace();
			}
		}
		
		writer.flush();
		writer.close();
	}
	@Override
	protectedvoiddoGet(HttpServletRequestreq,HttpServletResponseresp)throwsServletException,IOException{
		doPost(req,resp);
	}
}

❾ 求有关jsp购物车的代码

你的描述太简单了,你告诉我你的架构，我给你写一个。[email protected]你发给我看看吧，但我不确定一定能完成！

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