天猫整站J2EE系列教材（一百三十五）- 前台-需要登录

-->

下载区
文件名	文件大小
请先登录	5m
增值内容	5m
	5m
解压rar如果失败，请用5.21版本或者更高版本的winrar 点击下载 winrar5.21

工具版本兼容问题

步骤 1 : 先运行，看到效果，再学习
步骤 2 : 模仿和排错
步骤 3 : 界面效果
步骤 4 : ForeServlet.buy()
步骤 5 : buy.jsp
步骤 6 : buyPage.jsp

步骤 1 :

先运行，看到效果，再学习

edit 顶折

纠问

增值内容，请先登录

完整的J2EE模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE一整套技术栈，从无到有涵盖全部147个知识点，475个开发步骤, 充实J2EE项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

步骤 2 :

模仿和排错

edit 顶折

纠问

增值内容，请先登录

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

步骤 3 :

界面效果

edit 顶折

纠问

增值内容，请先登录

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

步骤 4 :

ForeServlet.buy()

edit 顶折

纠问

增值内容，请先登录

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

buy方法
ForeServlet.java

代码行数较多，请点击查看

	public String buy(HttpServletRequest request, HttpServletResponse response, Page page){
		String[] oiids=request.getParameterValues("oiid");
		List<OrderItem> ois = new ArrayList<>();
		float total = 0;

		for (String strid : oiids) {
			int oiid = Integer.parseInt(strid);
			OrderItem oi= orderItemDAO.get(oiid);
			total +=oi.getProduct().getPromotePrice()*oi.getNumber();
			ois.add(oi);
		}
		
		request.getSession().setAttribute("ois", ois);
		request.setAttribute("total", total);
		return "buy.jsp";
	}

package tmall.servlet; import java.io.BufferedWriter; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Collections; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.util.HtmlUtils; import tmall.bean.Category; import tmall.bean.OrderItem; import tmall.bean.Product; import tmall.bean.ProductImage; import tmall.bean.PropertyValue; import tmall.bean.Review; import tmall.bean.User; import tmall.comparator.ProductAllComparator; import tmall.comparator.ProductDateComparator; import tmall.comparator.ProductPriceComparator; import tmall.comparator.ProductReviewComparator; import tmall.comparator.ProductSaleCountComparator; import tmall.dao.CategoryDAO; import tmall.dao.ProductDAO; import tmall.dao.ProductImageDAO; import tmall.util.Page; public class ForeServlet extends BaseForeServlet { public String home(HttpServletRequest request, HttpServletResponse response, Page page) { List<Category> cs= new CategoryDAO().list(); new ProductDAO().fill(cs); new ProductDAO().fillByRow(cs); request.setAttribute("cs", cs); return "home.jsp"; } public String register(HttpServletRequest request, HttpServletResponse response, Page page) { String name = request.getParameter("name"); String password = request.getParameter("password"); name = HtmlUtils.htmlEscape(name); System.out.println(name); boolean exist = userDAO.isExist(name); if(exist){ request.setAttribute("msg", "用户名已经被使用,不能使用"); return "register.jsp"; } User user = new User(); user.setName(name); user.setPassword(password); System.out.println(user.getName()); System.out.println(user.getPassword()); userDAO.add(user); return "@registerSuccess.jsp"; } public String login(HttpServletRequest request, HttpServletResponse response, Page page) { String name = request.getParameter("name"); name = HtmlUtils.htmlEscape(name); String password = request.getParameter("password"); User user = userDAO.get(name,password); if(null==user){ request.setAttribute("msg", "账号密码错误"); return "login.jsp"; } request.getSession().setAttribute("user", user); return "@forehome"; } public String product(HttpServletRequest request, HttpServletResponse response, Page page) { int pid = Integer.parseInt(request.getParameter("pid")); Product p = productDAO.get(pid); List<ProductImage> productSingleImages = productImageDAO.list(p, ProductImageDAO.type_single); List<ProductImage> productDetailImages = productImageDAO.list(p, ProductImageDAO.type_detail); p.setProductSingleImages(productSingleImages); p.setProductDetailImages(productDetailImages); List<PropertyValue> pvs = propertyValueDAO.list(p.getId()); List<Review> reviews = reviewDAO.list(p.getId()); productDAO.setSaleAndReviewNumber(p); request.setAttribute("reviews", reviews); request.setAttribute("p", p); request.setAttribute("pvs", pvs); return "product.jsp"; } public String logout(HttpServletRequest request, HttpServletResponse response, Page page) { request.getSession().removeAttribute("user"); return "@forehome"; } public String checkLogin(HttpServletRequest request, HttpServletResponse response, Page page) { User user =(User) request.getSession().getAttribute("user"); if(null!=user) return "%success"; return "%fail"; } public String loginAjax(HttpServletRequest request, HttpServletResponse response, Page page) { String name = request.getParameter("name"); String password = request.getParameter("password"); User user = userDAO.get(name,password); if(null==user){ return "%fail"; } request.getSession().setAttribute("user", user); return "%success"; } public String category(HttpServletRequest request, HttpServletResponse response, Page page) { int cid = Integer.parseInt(request.getParameter("cid")); Category c = new CategoryDAO().get(cid); new ProductDAO().fill(c); new ProductDAO().setSaleAndReviewNumber(c.getProducts()); String sort = request.getParameter("sort"); if(null!=sort){ switch(sort){ case "review": Collections.sort(c.getProducts(),new ProductReviewComparator()); break; case "date" : Collections.sort(c.getProducts(),new ProductDateComparator()); break; case "saleCount" : Collections.sort(c.getProducts(),new ProductSaleCountComparator()); break; case "price": Collections.sort(c.getProducts(),new ProductPriceComparator()); break; case "all": Collections.sort(c.getProducts(),new ProductAllComparator()); break; } } request.setAttribute("c", c); return "category.jsp"; } public String search(HttpServletRequest request, HttpServletResponse response, Page page){ String keyword = request.getParameter("keyword"); List<Product> ps= new ProductDAO().search(keyword,0,20); productDAO.setSaleAndReviewNumber(ps); request.setAttribute("ps",ps); return "searchResult.jsp"; } public String buyone(HttpServletRequest request, HttpServletResponse response, Page page) { int pid = Integer.parseInt(request.getParameter("pid")); int num = Integer.parseInt(request.getParameter("num")); Product p = productDAO.get(pid); int oiid = 0; User user =(User) request.getSession().getAttribute("user"); boolean found = false; List<OrderItem> ois = orderItemDAO.listByUser(user.getId()); for (OrderItem oi : ois) { if(oi.getProduct().getId()==p.getId()){ oi.setNumber(oi.getNumber()+num); orderItemDAO.update(oi); found = true; oiid = oi.getId(); break; } } if(!found){ OrderItem oi = new OrderItem(); oi.setUser(user); oi.setNumber(num); oi.setProduct(p); orderItemDAO.add(oi); oiid = oi.getId(); } return "@forebuy?oiid="+oiid; } public String addCart(HttpServletRequest request, HttpServletResponse response, Page page) { int pid = Integer.parseInt(request.getParameter("pid")); Product p = productDAO.get(pid); int num = Integer.parseInt(request.getParameter("num")); User user =(User) request.getSession().getAttribute("user"); boolean found = false; List<OrderItem> ois = orderItemDAO.listByUser(user.getId()); for (OrderItem oi : ois) { if(oi.getProduct().getId()==p.getId()){ oi.setNumber(oi.getNumber()+num); orderItemDAO.update(oi); found = true; break; } } if(!found){ OrderItem oi = new OrderItem(); oi.setUser(user); oi.setNumber(num); oi.setProduct(p); orderItemDAO.add(oi); } return "%success"; } public String buy(HttpServletRequest request, HttpServletResponse response, Page page){ String[] oiids=request.getParameterValues("oiid"); List<OrderItem> ois = new ArrayList<>(); float total = 0; for (String strid : oiids) { int oiid = Integer.parseInt(strid); OrderItem oi= orderItemDAO.get(oiid); total +=oi.getProduct().getPromotePrice()*oi.getNumber(); ois.add(oi); } request.getSession().setAttribute("ois", ois); request.setAttribute("total", total); return "buy.jsp"; } }

代码行数较多，请点击查看

package tmall.servlet;

import java.io.BufferedWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.util.HtmlUtils;

import tmall.bean.Category;
import tmall.bean.OrderItem;
import tmall.bean.Product;
import tmall.bean.ProductImage;
import tmall.bean.PropertyValue;
import tmall.bean.Review;
import tmall.bean.User;
import tmall.comparator.ProductAllComparator;
import tmall.comparator.ProductDateComparator;
import tmall.comparator.ProductPriceComparator;
import tmall.comparator.ProductReviewComparator;
import tmall.comparator.ProductSaleCountComparator;
import tmall.dao.CategoryDAO;
import tmall.dao.ProductDAO;
import tmall.dao.ProductImageDAO;
import tmall.util.Page;

public class ForeServlet extends BaseForeServlet {
	public String home(HttpServletRequest request, HttpServletResponse response, Page page) {
		List<Category> cs= new CategoryDAO().list();
		new ProductDAO().fill(cs);
		new ProductDAO().fillByRow(cs);
		request.setAttribute("cs", cs);
		return "home.jsp";
	}

	public String register(HttpServletRequest request, HttpServletResponse response, Page page) {
		String name = request.getParameter("name");
		String password = request.getParameter("password");
		name = HtmlUtils.htmlEscape(name);
		System.out.println(name);
		boolean exist = userDAO.isExist(name);
		
		if(exist){
			request.setAttribute("msg", "用户名已经被使用,不能使用");
			return "register.jsp";	
		}
		
		User user = new User();
		user.setName(name);
		user.setPassword(password);
		System.out.println(user.getName());
		System.out.println(user.getPassword());
		userDAO.add(user);
		
		return "@registerSuccess.jsp";	
	}	
	public String login(HttpServletRequest request, HttpServletResponse response, Page page) {
		String name = request.getParameter("name");
		name = HtmlUtils.htmlEscape(name);
		String password = request.getParameter("password");		
		
		User user = userDAO.get(name,password);
		 
		if(null==user){
			request.setAttribute("msg", "账号密码错误");
			return "login.jsp";	
		}
		request.getSession().setAttribute("user", user);
		return "@forehome";	
	}	
	
	public String product(HttpServletRequest request, HttpServletResponse response, Page page) {
		int pid = Integer.parseInt(request.getParameter("pid"));
		Product p = productDAO.get(pid);
		
		List<ProductImage> productSingleImages = productImageDAO.list(p, ProductImageDAO.type_single);
		List<ProductImage> productDetailImages = productImageDAO.list(p, ProductImageDAO.type_detail);
		p.setProductSingleImages(productSingleImages);
		p.setProductDetailImages(productDetailImages);
		
		List<PropertyValue> pvs = propertyValueDAO.list(p.getId());		
	
		List<Review> reviews = reviewDAO.list(p.getId());
		
		productDAO.setSaleAndReviewNumber(p);

		request.setAttribute("reviews", reviews);

		request.setAttribute("p", p);
		request.setAttribute("pvs", pvs);
		return "product.jsp";		
	}
	public String logout(HttpServletRequest request, HttpServletResponse response, Page page) {
		request.getSession().removeAttribute("user");
		return "@forehome";	
	}

	public String checkLogin(HttpServletRequest request, HttpServletResponse response, Page page) {
		User user =(User) request.getSession().getAttribute("user");
		if(null!=user)
			return "%success";
		return "%fail";
	}
	public String loginAjax(HttpServletRequest request, HttpServletResponse response, Page page) {
		String name = request.getParameter("name");
		String password = request.getParameter("password");		
		User user = userDAO.get(name,password);
		
		if(null==user){
			return "%fail";	
		}
		request.getSession().setAttribute("user", user);
		return "%success";	
	}
	public String category(HttpServletRequest request, HttpServletResponse response, Page page) {
		int cid = Integer.parseInt(request.getParameter("cid"));
		
		Category c = new CategoryDAO().get(cid);
		new ProductDAO().fill(c);
		new ProductDAO().setSaleAndReviewNumber(c.getProducts());		
		
		String sort = request.getParameter("sort");
		if(null!=sort){
		switch(sort){
			case "review":
				Collections.sort(c.getProducts(),new ProductReviewComparator());
				break;
			case "date" :
				Collections.sort(c.getProducts(),new ProductDateComparator());
				break;
				
			case "saleCount" :
				Collections.sort(c.getProducts(),new ProductSaleCountComparator());
				break;
				
			case "price":
				Collections.sort(c.getProducts(),new ProductPriceComparator());
				break;
				
			case "all":
				Collections.sort(c.getProducts(),new ProductAllComparator());
				break;
			}
		}
		
		request.setAttribute("c", c);
		return "category.jsp";		
	}
	
	public String search(HttpServletRequest request, HttpServletResponse response, Page page){
		String keyword = request.getParameter("keyword");
		List<Product> ps= new ProductDAO().search(keyword,0,20);
		productDAO.setSaleAndReviewNumber(ps);
		request.setAttribute("ps",ps);
		return "searchResult.jsp";
	}

	public String buyone(HttpServletRequest request, HttpServletResponse response, Page page) {
		int pid = Integer.parseInt(request.getParameter("pid"));
		int num = Integer.parseInt(request.getParameter("num"));
		Product p = productDAO.get(pid);
		int oiid = 0;
		
		User user =(User) request.getSession().getAttribute("user");
		boolean found = false;
		List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
		for (OrderItem oi : ois) {
			if(oi.getProduct().getId()==p.getId()){
				oi.setNumber(oi.getNumber()+num);
				orderItemDAO.update(oi);
				found = true;
				oiid = oi.getId();
				break;
			}
		}		

		if(!found){
			OrderItem oi = new OrderItem();
			oi.setUser(user);
			oi.setNumber(num);
			oi.setProduct(p);
			orderItemDAO.add(oi);
			oiid = oi.getId();
		}
		return "@forebuy?oiid="+oiid;
	}

	public String addCart(HttpServletRequest request, HttpServletResponse response, Page page) {
		int pid = Integer.parseInt(request.getParameter("pid"));
		Product p = productDAO.get(pid);
		int num = Integer.parseInt(request.getParameter("num"));
		
		User user =(User) request.getSession().getAttribute("user");
		boolean found = false;

		List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
		for (OrderItem oi : ois) {
			if(oi.getProduct().getId()==p.getId()){
				oi.setNumber(oi.getNumber()+num);
				orderItemDAO.update(oi);
				found = true;
				break;
			}
		}		
		
		if(!found){
			OrderItem oi = new OrderItem();
			oi.setUser(user);
			oi.setNumber(num);
			oi.setProduct(p);
			orderItemDAO.add(oi);
		}
		return "%success";
	}
	public String buy(HttpServletRequest request, HttpServletResponse response, Page page){
		String[] oiids=request.getParameterValues("oiid");
		List<OrderItem> ois = new ArrayList<>();
		float total = 0;

		for (String strid : oiids) {
			int oiid = Integer.parseInt(strid);
			OrderItem oi= orderItemDAO.get(oiid);
			total +=oi.getProduct().getPromotePrice()*oi.getNumber();
			ois.add(oi);
		}
		
		request.getSession().setAttribute("ois", ois);
		request.setAttribute("total", total);
		return "buy.jsp";
	}	
}

步骤 5 :

buy.jsp

edit 顶折

纠问

增值内容，请先登录

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8" isELIgnored="false"%>

<%@include file="include/header.jsp"%>
<%@include file="include/top.jsp"%>
<%@include file="include/cart/buyPage.jsp"%>
<%@include file="include/footer.jsp"%>

步骤 6 :

buyPage.jsp

edit 顶折

纠问

增值内容，请先登录

使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。如果是误封，请联系站长，谢谢

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" isELIgnored="false"%> <div class="buyPageDiv"> <form action="forecreateOrder" method="post"> <div class="buyFlow"> <img class="pull-left" src="img/site/simpleLogo.png"> <img class="pull-right" src="img/site/buyflow.png"> <div style="clear:both"></div> </div> <div class="address"> <div class="addressTip">输入收货地址</div> <div> <table class="addressTable"> <tr> <td class="firstColumn">详细地址<span class="redStar">*</span></td> <td><textarea name="address" placeholder="建议您如实填写详细收货地址，例如接到名称，门牌好吗，楼层和房间号等信息"></textarea></td> </tr> <tr> <td>邮政编码</td> <td><input name="post" placeholder="如果您不清楚邮递区号，请填写000000" type="text"></td> </tr> <tr> <td>收货人姓名<span class="redStar">*</span></td> <td><input name="receiver" placeholder="长度不超过25个字符" type="text"></td> </tr> <tr> <td>手机号码 <span class="redStar">*</span></td> <td><input name="mobile" placeholder="请输入11位手机号码" type="text"></td> </tr> </table> </div> </div> <div class="productList"> <div class="productListTip">确认订单信息</div> <table class="productListTable"> <thead> <tr> <th colspan="2" class="productListTableFirstColumn"> <img class="tmallbuy" src="img/site/tmallbuy.png"> <a class="marketLink" href="#nowhere">店铺：天猫店铺</a> <a class="wangwanglink" href="#nowhere"> <span class="wangwangGif"></span> </a> </th> <th>单价</th> <th>数量</th> <th>小计</th> <th>配送方式</th> </tr> <tr class="rowborder"> <td colspan="2" ></td> <td></td> <td></td> <td></td> <td></td> </tr> </thead> <tbody class="productListTableTbody"> <c:forEach items="${ois}" var="oi" varStatus="st" > <tr class="orderItemTR"> <td class="orderItemFirstTD"><img class="orderItemImg" src="img/productSingle_middle/${oi.product.firstProductImage.id}.jpg"></td> <td class="orderItemProductInfo"> <a href="foreproduct?pid=${oi.product.id}" class="orderItemProductLink"> ${oi.product.name} </a> <img src="img/site/creditcard.png" title="支持信用卡支付"> <img src="img/site/7day.png" title="消费者保障服务,承诺7天退货"> <img src="img/site/promise.png" title="消费者保障服务,承诺如实描述"> </td> <td> <span class="orderItemProductPrice">￥<fmt:formatNumber type="number" value="${oi.product.promotePrice}" minFractionDigits="2"/></span> </td> <td> <span class="orderItemProductNumber">${oi.number}</span> </td> <td><span class="orderItemUnitSum"> ￥<fmt:formatNumber type="number" value="${oi.number*oi.product.promotePrice}" minFractionDigits="2"/> </span></td> <c:if test="${st.count==1}"> <td rowspan="5" class="orderItemLastTD"> <label class="orderItemDeliveryLabel"> <input type="radio" value="" checked="checked"> 普通配送 </label> <select class="orderItemDeliverySelect" class="form-control"> <option>快递免邮费</option> </select> </td> </c:if> </tr> </c:forEach> </tbody> </table> <div class="orderItemSumDiv"> <div class="pull-left"> <span class="leaveMessageText">给卖家留言:</span> <span> <img class="leaveMessageImg" src="img/site/leaveMessage.png"> </span> <span class="leaveMessageTextareaSpan"> <textarea name="userMessage" class="leaveMessageTextarea"></textarea> <div> <span>还可以输入200个字符</span> </div> </span> </div> <span class="pull-right">店铺合计(含运费): ￥<fmt:formatNumber type="number" value="${total}" minFractionDigits="2"/></span> </div> </div> <div class="orderItemTotalSumDiv"> <div class="pull-right"> <span>实付款：</span> <span class="orderItemTotalSumSpan">￥<fmt:formatNumber type="number" value="${total}" minFractionDigits="2"/></span> </div> </div> <div class="submitOrderDiv"> <button type="submit" class="submitOrderButton">提交订单</button> </div> </form> </div>

代码行数较多，请点击查看

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8" isELIgnored="false"%>
<div class="buyPageDiv">
  <form action="forecreateOrder" method="post">
  
	<div class="buyFlow">
		<img class="pull-left" src="img/site/simpleLogo.png">
		<img class="pull-right" src="img/site/buyflow.png">
		<div style="clear:both"></div>
	</div>
	<div class="address">
		<div class="addressTip">输入收货地址</div>
		<div>
		
			<table class="addressTable">
				<tr>
					<td class="firstColumn">详细地址<span class="redStar">*</span></td>
					
					<td><textarea name="address" placeholder="建议您如实填写详细收货地址，例如接到名称，门牌好吗，楼层和房间号等信息"></textarea></td>
				</tr>
				<tr>
					<td>邮政编码</td>
					<td><input  name="post" placeholder="如果您不清楚邮递区号，请填写000000" type="text"></td>
				</tr>
				<tr>
					<td>收货人姓名<span class="redStar">*</span></td>
					<td><input  name="receiver"  placeholder="长度不超过25个字符" type="text"></td>
				</tr>
				<tr>
					<td>手机号码 <span class="redStar">*</span></td>
					<td><input name="mobile"  placeholder="请输入11位手机号码" type="text"></td>
				</tr>
			</table>
			
		</div>

	</div>
	<div class="productList">
		<div class="productListTip">确认订单信息</div>
		
		<table class="productListTable">
			<thead>
				<tr>
					<th colspan="2" class="productListTableFirstColumn">
						<img class="tmallbuy" src="img/site/tmallbuy.png">
						<a class="marketLink" href="#nowhere">店铺：天猫店铺</a>
						<a class="wangwanglink" href="#nowhere"> <span class="wangwangGif"></span> </a>
					</th>
					<th>单价</th>
					<th>数量</th>
					<th>小计</th>
					<th>配送方式</th>
				</tr>
				<tr class="rowborder">
					<td  colspan="2" ></td>
					<td></td>
					<td></td>
					<td></td>
					<td></td>
				</tr>
			</thead>
			<tbody class="productListTableTbody">
				<c:forEach items="${ois}" var="oi" varStatus="st" >
					<tr class="orderItemTR">
						<td class="orderItemFirstTD"><img class="orderItemImg" src="img/productSingle_middle/${oi.product.firstProductImage.id}.jpg"></td>
						<td class="orderItemProductInfo">
						<a  href="foreproduct?pid=${oi.product.id}" class="orderItemProductLink">
							${oi.product.name}
						</a>
						
							<img src="img/site/creditcard.png" title="支持信用卡支付">
							<img src="img/site/7day.png" title="消费者保障服务,承诺7天退货">
							<img src="img/site/promise.png" title="消费者保障服务,承诺如实描述">
						
						</td>
						<td>
						
						<span class="orderItemProductPrice">￥<fmt:formatNumber type="number" value="${oi.product.promotePrice}" minFractionDigits="2"/></span>
						</td>
						<td>
						<span class="orderItemProductNumber">${oi.number}</span>
						</td>
						<td><span class="orderItemUnitSum">
						￥<fmt:formatNumber type="number" value="${oi.number*oi.product.promotePrice}" minFractionDigits="2"/>
						</span></td>
						<c:if test="${st.count==1}">
						<td rowspan="5"  class="orderItemLastTD">
						<label class="orderItemDeliveryLabel">
							<input type="radio" value="" checked="checked">
							普通配送
						</label>
						
						<select class="orderItemDeliverySelect" class="form-control">
							<option>快递 免邮费</option>
						</select>

						</td>
						</c:if>
						
					</tr>
				</c:forEach>				
				
			</tbody>
			
		</table>
		<div class="orderItemSumDiv">
			<div class="pull-left">
				<span class="leaveMessageText">给卖家留言:</span>
				<span>
					<img class="leaveMessageImg" src="img/site/leaveMessage.png">
				</span>
				<span class="leaveMessageTextareaSpan">
					<textarea name="userMessage" class="leaveMessageTextarea"></textarea>
					<div>
						<span>还可以输入200个字符</span>
					</div>
				</span>
			</div>
			
			<span class="pull-right">店铺合计(含运费): ￥<fmt:formatNumber type="number" value="${total}" minFractionDigits="2"/></span>
		</div>
		
	</div>

	<div class="orderItemTotalSumDiv">
		<div class="pull-right"> 
			<span>实付款：</span>
			<span class="orderItemTotalSumSpan">￥<fmt:formatNumber type="number" value="${total}" minFractionDigits="2"/></span>
		</div>
	</div>
	
	<div class="submitOrderDiv">
			<button type="submit" class="submitOrderButton">提交订单</button>
	</div>
  </form>		
</div>

天猫整站J2EE系列教材（一百三十四）- 前台-需要登录 - 立即购买

天猫整站J2EE系列教材（一百三十六）- 前台-需要登录 - 加入购物车

HOW2J公众号，关注后实时获知最新的教程和优惠活动，谢谢。

问答区域

2021-01-25 这里的ois在退出账号时也要remove吧，不然退出，登录其他账号，访问forecreateOrder还是使用的上一个账号的ois

星归	关于实践项目-天猫整站J2EE-结算页面的提问问题截图代码异常如题 request.getSession().setAttribute("ois", ois);

2 个答案

Pipi_pika
答案时间：2021-12-25

直接清空好了，使当前session失效 request.getSession().invalidate();

how2j
答案时间：2021-02-02

e? 你这个说的很对，应该吧session里的数据都摧毁。

回答已经提交成功，正在审核。请于我的回答处查看回答记录，谢谢

2019-12-12 点击立即购买之后，然后返回，依然会生成订单项

javaself

关于实践项目-天猫整站J2EE-结算页面的提问

在购买产品，选择立即购买后，跳转到提交订单页面，这时候如果返回，取消购买，查看数据库，仍然会生成订单，导致该产品的销量会变化

2 个答案

shengchaohua
答案时间：2020-06-11

好像还有确认订单的页面

how2j
答案时间：2019-12-13

在天猫官网，点返回，也会生成订单吧。

回答已经提交成功，正在审核。请于我的回答处查看回答记录，谢谢

2019-04-20 站长你写的时候有什么办法区分不同div里面的内容吗

2019-02-20 关于不登录直接访问forebuy?oiid=xxx显示问题的解决方法

张小丶凡

关于实践项目-天猫整站J2EE-结算页面 -buyPage.jsp 的提问

看到其他学员说的这个问题，自己改进了一下。弄得时候有一个问题，就是在servlet里面无法获取oiid的参数值，因为使用了BaseForeServlet来调用方法，所以在对应方法checkOiidUser里面使用request.getParameter("oiid")是获取不到的。解决方法是使用Ajax提交的时候顺便把URL里面的oiid参数值传递过来，这样就能获取了

//servlet里面判断登录状态及此Oiid是否属于改用户
    public String checkOiidUser(HttpServletRequest request,HttpServletResponse response,Page page){
        User user =(User) request.getSession().getAttribute("user");
        int oiid=Integer.parseInt(request.getParameter("oiid"));

        if(null==user)
            return "%fail";
        List<OrderItem> orderItems=orderItemDAO.listByUser(user.getId());
        boolean found=false;
        for(OrderItem orderItem:orderItems){
            if(orderItem.getId()==oiid){
                found=true;
            }
        }
        if(found)
            return "%checkOK";
        else
            return "%fail";
    }

//jsp里面Ajax调用
    var checkOiid = "forecheckOiidUser";
    var oiid = getUrlParam("oiid");
    $.get(
        checkOiid,
        {"oiid": oiid},
        function (result) {
            if ("checkOK" == result) {

            } else {
                $("div.buyPageDiv").html("<a href='login.jsp'>请先登录</a>");
                $("div.buyPageDiv").addClass("text-center");
                $("div.buyPageDiv").css("font", "16px");
            }
        }
    );
//jquery用来提取URL里面需要的参数函数getUrlParam()，网上面找的
        function getUrlParam(name)
        {
            var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
            var r = window.location.search.substr(1).match(reg);  //匹配目标参数
            if (r!=null) return unescape(r[2]); return null; //返回参数值
        }

2 个答案

ChesterWu
答案时间：2020-06-04

楼主答案很nice,不过在else添加location.href="${pageContext.request.contextPath}/login.jsp";会不会好点

how2j
答案时间：2019-02-21

不登录不是本来就不应该能直接访问的吗

回答已经提交成功，正在审核。请于我的回答处查看回答记录，谢谢

2018-10-01 ois为什么要放在session里而不是request中

提问太多，页面渲染太慢，为了加快渲染速度，本页最多只显示几条提问。还有 7 条以前的提问，请点击查看

提问之前请登陆

提问已经提交成功，正在审核。请于我的提问处查看提问记录，谢谢

关于实践项目-天猫整站J2EE-结算页面的提问

尽量提供截图、代码和异常信息，有助于分析和解决问题。也可进本站QQ群交流: 578362961

提问尽量提供完整的代码，环境描述，越是有利于问题的重现，您的问题越能更快得到解答。
对教程中代码有疑问，请提供是哪个步骤，哪一行有疑问，这样便于快速定位问题，提高问题得到解答的速度
在已经存在的几千个提问里，有相当大的比例，是因为使用了和站长不同版本的开发环境导致的,比如 jdk, eclpise, idea, mysql,tomcat 等等软件的版本不一致。
请使用和站长一样的版本，可以节约自己大量的学习时间。站长把教学中用的软件版本整理了，都统一放在了这里，方便大家下载： https://how2j.cn/k/helloworld/helloworld-version/1718.html

上传截图