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Java Web之网上购物系统（提交订单、查看我的订单）

作业终于做完了，好开心。。。。。。虽然这一周经历不是那么顺利，但是觉得还是收获了不少，有过想哭的冲动，代码不会写，事情办不好，各种发愁。空间里发小发了带父母出去游玩的照片，瞬间能量值不知道是被击退的多还是回返的多。不过今天终于补满能量值。下面我来分享一下我的运行结果。

下面我把我管理后台的代码粘贴一下

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>top.jsp</title>
        <style type="text/css">
body {
    text-align: center;
    font-size: 38px;
}

* {
    font-family: 华文楷体;
    font-size: 18px;
    color: #F0F ";
}

h1 {
    text-align: center;
    font-size: 38px;
}
</style>
    </head>

    <body>
        <h1 style="font-size: 38px;">
            欢迎登录网上购物后台
        </h1>

        <form action="<c:url value='/AdminServlet'/>" method="post">
            <input type="hidden" name="method" value="1">
            用户名:
            <input type="text" name="username" />
            <br />
            密 &nbsp; 码:
            <input type="password" name="password" />
            <br />
            <input type="submit" value="登录">
        </form>
    </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>list.jsp</title>
        <style type="text/css">
body {
    text-align: center;
    font-size: 38px;
}

* {
    font-family: 华文楷体;
    font-size: 18px;
    color: #F0F ";
}
img{
    width: 50px;
    height: 30px;


}
h1 {
    text-align: center;
    font-size: 38px;
}

a:link {
    color: #999;
    text-decoration: none;
}

a:VISITED {
    text-decoration: none;
    color: #c60;
}

a:HOVER {
    text-decoration: none;
    color: #00F;
}
</style>

    </head>

    <body>
        <h1 style="font-size: 38px;">
            欢迎登录到网上购物后台系统
        </h1>
        <a style="font-size: 26px;"
            href="<c:url value='/AdminServlet?method=2'/>">查看商品</a>
        <a style="font-size: 26px;" href="<c:url value='/admin/add.jsp'/>">添加商品</a>
        <a style="font-size: 26px;"
            href="<c:url value='/AdminServlet?method=7'/>">查看订单</a>
        <a style="font-size: 26px;" href="<c:url value='/admin/login.jsp'/>">退出系统</a>

        <table border="1" align="center" width="60%">
            <tr>
                <th>
                    商品名
                </th>
                <th>
                    价格
                </th>
                <th>
                    类型
                </th>
                <th>
                    数量
                </th>
                <th>
                    图片
                </th>
                <th>
                    描述
                </th>
                <th>
                    操作
                </th>

            </tr>
            <c:forEach items="${pb.datas }" var="c">
                <tr>
                    <td>
                        ${c.name }
                    </td>
                    <td>
                        ${c.price }
                    </td>
                    <td>
                        ${c.category }
                    </td>
                    <td>
                        ${c.pnum}
                    </td>
                    <td>
                        <a href="<c:url value='/AdminServlet?method=9&id=${c.id }'/>"><img  src="${c.imgurl }"/> </a>
                    </td>
                    <td>
                        ${c.description }
                    </td>

                    <td>
                        <a href="<c:url value='/AdminServlet?method=4&id=${c.id }'/>">编辑</a>
                        <a href="<c:url value='/OrderServlet?method=4&id=${c.id }'/>">删除</a>
                    </td>
                </tr>
            </c:forEach>
        </table>
        <br>
        第${pb.pageCode }页/共${pb.totalPage }页
        <a href="<c:url value='/AdminServlet?method=2'/>">首页</a>
        <c:if test="${pb.pageCode > 1}">
            <a
                href="<c:url value='/AdminServlet?method=2&pageCode=${pb.pageCode-1}'/>">上一页</a>
        </c:if>
        <%--页码列表 --%>
        <c:set var="begin" value="1" />
        <c:set var="end" value="10" />

        <!-- 定位begin和end -->
        <c:choose>
            <c:when test="${pb.totalPage <= 10}">
                <c:set var="begin" value="1" />
                <c:set var="end" value="${pb.totalPage}" />
            </c:when>
            <c:otherwise>
                <c:choose>
                    <c:when test="${pb.pageCode-4 <= 1 }">
                        <c:set var="begin" value="1" />
                        <c:set var="end" value="10" />
                    </c:when>
                    <c:when test="${pb.pageCode+5 > pb.totalPage}">
                        <c:set var="begin" value="${pb.totalPage-9}" />
                        <c:set var="end" value="${pb.totalPage}" />
                    </c:when>
                    <c:otherwise>
                        <c:set var="begin" value="${pb.pageCode-4}" />
                        <c:set var="end" value="${pb.pageCode+5}" />
                    </c:otherwise>
                </c:choose>
            </c:otherwise>
        </c:choose>
        <c:forEach begin="${begin}" end="${end}" var="i">
            <c:choose>
                <c:when test="${pb.pageCode == i}">${i}</c:when>
                <c:otherwise>
                    <a href="<c:url value='/AdminServlet?method=2&pageCode=${i}'/>">${i
                        }</a>
                </c:otherwise>
            </c:choose>
        </c:forEach>

        <c:if test="${pb.pageCode < pb.totalPage}">
            <a
                href="<c:url value='/AdminServlet?method=2&pageCode=${pb.pageCode+1}'/>">下一页</a>
        </c:if>
        <a
            href="<c:url value='/AdminServlet?method=2&pageCode=${pb.totalPage }'/>">尾页</a>

    </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>add.jsp</title>
        <style type="text/css">
body {
    text-align: center;
    font-size: 38px;
}

* {
    font-family: 华文楷体;
    font-size: 18px;
    color: #F0F ";
}

h1 {
    text-align: center;
    font-size: 38px;
}
</style>

    </head>

    <body>

        <h1 style="font-size: 38px;">
            添加商品
        </h1>

        <form action="<c:url value='/AdminServlet'/>" method="post">
            <input type="hidden" name="method" value="3">
            <table border="1" width="50%" align="center">
                <tr>
                    <td>
                        商品名
                    </td>
                    <td>
                        <input type="text" name="name" id="name" onfocus="nameFocus()"
                            onblur="nameBlur()" />
                        <div id="nameId"></div>
                    </td>
                </tr>
                <tr>
                    <td>
                        价格
                    </td>
                    <td>
                        <input type="text" name="price" id="tel" onfocus="telFocus()"
                            onblur="telBlur()" />
                        <div id="telId"></div>
                    </td>
                </tr>
                <tr>
                    <td>
                        类型
                    </td>
                    <td>
                        <input type="text" name="category" id="address" />
                    </td>
                </tr>
                <tr>
                    <td>
                        数量
                    </td>
                    <td>
                        <input type="text" name="pnum" />
                    </td>
                </tr>
            
                <tr>
                    <td>
                        描述
                    </td>
                    <td>
                        <input type="text" name="description" />
                    </td>
                </tr>


            </table>
            <input style="margin-right: 200px;" type="submit" value="添加" />

        </form>
    </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>edit.jsp</title>
    </head>

    <body style="text-align: center;">
        <h3>
            修改商品信息
        </h3>
        <form action="<c:url value='/AdminServlet'/>" method="post">
            <input type="hidden" name="method" value="5">
            <input type="hidden" name="id" value="${product.id }">
            <table border="1" width="50%" align="center">
                <tr>
                    <td>
                        商品名
                    </td>
                    <td>
                        <input type="text" name="name" value="${product.name }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        价格
                    </td>
                    <td>
                        <input type="text" name="price" value="${product.price }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        类型
                    </td>
                    <td>
                        <input type="text" id="birthday" name="category"
                            value="${product.category }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        数量
                    </td>
                    <td>
                        <input type="text" name="pnum" value="${product.pnum }" />
                    </td>
                </tr>

                <tr>
                    <td>
                        描述
                    </td>
                    <td>
                        <input type="text" name="description"
                            value="${product.description }" />
                    </td>
                </tr>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>list.jsp</title>
    </head>

    <body>
        <center>
            <h1>
                查看所有订单
            </h1>
            <table border="2" width="80%">
                <tr align="left">
                    <th>
                        序号
                    </th>
                    <th>
                        订单号
                    </th>
                    <th>
                        订单金额
                    </th>
                    <th>
                        时间
                    </th>
                    <th>
                        状态
                    </th>
                    <th>
                        买家详情
                    </th>
                    <th>
                        物流信息
                    </th>
                    <th>
                        交易状态
                    </th>
                    <th>
                        操作
                    </th>
                </tr>
                <c:forEach items="${allorderList}" var="order" varStatus="status">
                    <tr>
                        <td>
                            ${status.count}
                        </td>
                        <td>
                            ${order.id }
                        </td>
                        <td>
                            ${order.totalMoney }
                        </td>
                        <td>
                            ${order.ordertime}
                        </td>
                        <td>
                            <c:if test="${order.paysate == 0 }">
                            未支付
                        </c:if>
                            <c:if test="${order.paysate == 1 }">
                            已支付
                        </c:if>
                        </td>
                        <td>
                            ${order.receiverName }
                        </td>
                        <td>
                            <c:if test="${order.paysate == 0 }">
                            未发货
                        </c:if>
                            <c:if test="${order.paysate == 1 }">
                            已发货
                        </c:if>
                        </td>
                        <td>
                            交易中
                        </td>
                        <td>
                            <a href="<c:url value='/OrderServlet?method=4&id=${order.id }'/>">删除</a>
                        </td>
                    </tr>
                    <c:set value="${total + entry.key.price*entry.value}" var="total" />
                </c:forEach>
            </table>
        </center>
    </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>updateorder.jsp</title>
    </head>

    <body style="text-align: center;">
        <h3>
            修改订单信息
        </h3>
        <form action="<c:url value='/AdminServlet'/>" method="post">
            <input type="hidden" name="method" value="5">
            <input type="hidden" name="id" value="${product.id }">
            <table border="1" width="50%" align="center">
                <tr>
                    <td>
                        订单号
                    </td>
                    <td>
                        ${order.id }
                    </td>
                </tr>
                <tr>
                    <td>
                        买家姓名
                    </td>
                    <td>
                        <input type="text" name="receiverName"
                            value="${order.receiverName }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        收货地址
                    </td>
                    <td>
                        <input type="text" id="birthday" name="receiverAddress"
                            value="${order.receiverAddress }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        收获电话
                    </td>
                    <td>
                        <input type="text" name="receiverPhone"
                            value="${order.receiverPhone }" />
                    </td>
                </tr>
                <tr>
                    <td>
                        物流信息
                    </td>
                    <td>
                        在路上
                    </td>
                </tr>
                <tr>
                    <td>
                        交易状态
                    </td>
                    <td>
                        交易中
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        <input type="submit" value="更改" />
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

<%@ page language="java"  import="java.util.*" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>upload.jsp</title>
    </head>
    <body>
        
        <form method="post" action="/shopping/AdminServlet?method=8&id=${product.id }"
            enctype="multipart/form-data">
            选择一个文件:
            <input type="file" name="imgurl"/>
            <br />
            <br />
            <input type="submit" value="上传" />
        </form>
    </body>
</html>

                <tr>
                    <td colspan="2" align="center">
                        <input type="submit" value="更改" />
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

package cn.edu.aynu.rjxy.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import cn.edu.aynu.rjxy.bean.Admin;
import cn.edu.aynu.rjxy.bean.Order;
import cn.edu.aynu.rjxy.bean.Page;
import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.service.AdminService;
import cn.edu.aynu.rjxy.service.OrderService;
import cn.edu.aynu.rjxy.service.ProductService;
import cn.edu.aynu.rjxy.utils.CommonsUtils;

public class AdminServlet extends HttpServlet {
    private AdminService aService = new AdminService();
    private ProductService ps = new ProductService();
    private OrderService os = new OrderService();
    private static final long serialVersionUID = 1L;
    // 上传文件存储目录
    private static final String UPLOAD_DIRECTORY = "img";
    // 上传配置
    private static final int MEMORY_THRESHOLD = 1024 * 1024 * 3; // 3MB
    private static final int MAX_FILE_SIZE = 1024 * 1024 * 40; // 40MB
    private static final int MAX_REQUEST_SIZE = 1024 * 1024 * 50; // 50MB

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        this.doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 处理中文乱码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        // 获取隐藏字段method的值，并把它转换为int型
        int method = Integer.parseInt(request.getParameter("method"));

        switch (method) {

        case 1:
            this.login(request, response);
            break;
        case 2:
            this.query(request, response);
            break;
        case 3:
            this.add(request, response);
            break;
        case 4:
            this.loadForUpdate(request, response);
            break;
        case 5:
            this.edit(request, response);
            break;
        case 6:
            this.delete(request, response);
            break;
        case 7:
            this.order(request, response);
            break;
        case 8:
            this.uploadpicture(request, response);
            break;
        case 9:
            this.uploadForpicture(request, response);
            break;

        }

    }

    // 管理员登录
    public void login(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 从请求中解析用户名和密码
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        // 执行加载业务
        Admin a = aService.login(username, password);
        if (a != null) {
            HttpSession session = request.getSession();
            session.setAttribute("userId", a.getId());
            response.getWriter().print("登录成功" + a.getId());
            // 通过请求转发将pb带到list.jsp上去
            request.getRequestDispatcher("/admin/list.jsp").forward(request,
                    response);
        } else {
            response.getWriter().print("登录失败，即将跳转到登录页面，请重新登录......");
            response.setHeader("Refresh", "3;url=/shopping/admin/login.jsp");

        }

    }

    // 管理员查看商品
    public void query(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // 当前页有一个默认值为1
        int pageCode = 1;
        String s = request.getParameter("pageCode");
        // 如果请求中存在pageCode参数
        if (s != null && !s.trim().isEmpty()) {
            pageCode = Integer.parseInt(s);
        }
        // 查询当前页的记录
        Page pb = ps.queryByPage(pageCode);
        // 将pb保存在request域中
        request.setAttribute("pb", pb);
        // 通过请求转发将pb带到list.jsp上去
        request.getRequestDispatcher("/admin/list.jsp").forward(request,
                response);
    }

    // 管理员添加商品
    public void add(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // 使用CommonUtils工具类将请求数据封装到bean中
        Product p = CommonsUtils.toBean(request.getParameterMap(),
                Product.class);
        // 使用UUID作为id属性的值
        p.setId(CommonsUtils.uuid());
        // p.setImgurl(uploadPath);
        // 执行添加
        ps.add(p);
        // 输出添加成功提示
        response.getWriter().print("添加成功");
    }

    // 加载商品为修改做准备
    public void loadForUpdate(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        // 从请求中获取客户的id
        String id = request.getParameter("id");
        // 执行加载业务
        Product p = ps.findById(id);
        // 将Customer对象c保存在request域中
        request.setAttribute("product", p);
        // t=通过请求转发将customer对象显示在list.jsp页面上
        request.getRequestDispatcher("/admin/edit.jsp").forward(request,
                response);

    }

    // 管理员修改商品信息
    public void edit(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 使用CommonUtils工具类将请求数据封装到bean中
        Product p = CommonsUtils.toBean(request.getParameterMap(),
                Product.class);
        // 执行更改业务
        ps.edit(p);
        // 给客户端发送更改成功提示
        response.getWriter().print("更改成功");

    }

    // 管理员删除商品
    public void delete(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 从请求中获取id
        String id = request.getParameter("id");
        // 执行删除
        ps.delete(id);
        // 给客户端发送删除成功提示
        response.getWriter().print("删除成功");

    }

    // 管理员查看所有订单
    public void order(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        List<Order> list = os.findAllOrder();
        request.setAttribute("allorderList", list);
        request.getRequestDispatcher("/admin/orderproduct.jsp").forward(
                request, response);
    }

    // 为上传照片做准备
    public void uploadForpicture(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        String id = request.getParameter("id");
        Product p = ps.findById(id);
        System.out.println(id + "id");
        ps.upload(p, id);
        // 将Customer对象c保存在request域中
        request.setAttribute("product", p);
        // t=通过请求转发将customer对象显示在list.jsp页面上
        request.getRequestDispatcher("/admin/upload.jsp").forward(request,
                response);
    }

    // 管理员上传照片
    public void uploadpicture(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        // 检测是否为多媒体上传
        if (!ServletFileUpload.isMultipartContent(request)) {
            // 如果不是则停止
            PrintWriter writer = response.getWriter();
            writer.println("Error: 表单必须包含 enctype=multipart/form-data");
            writer.flush();
            return;
        }

        // 配置上传参数
        DiskFileItemFactory factory = new DiskFileItemFactory();
        // 设置内存临界值 - 超过后将产生临时文件并存储于临时目录中
        factory.setSizeThreshold(MEMORY_THRESHOLD);
        // 设置临时存储目录
        factory.setRepository(new File(System.getProperty("java.io.tmpdir")));

        ServletFileUpload upload = new ServletFileUpload(factory);

        // 设置最大文件上传值
        upload.setFileSizeMax(MAX_FILE_SIZE);

        // 设置最大请求值 (包含文件和表单数据)
        upload.setSizeMax(MAX_REQUEST_SIZE);

        // 构造临时路径来存储上传的文件
        // 这个路径相对当前应用的目录
        String uploadPath = getServletContext().getRealPath("")
                + File.separator + UPLOAD_DIRECTORY;
        // 如果目录不存在则创建
        File uploadDir = new File(uploadPath);
        if (!uploadDir.exists()) {
            uploadDir.mkdir();
        }

        try {
            // 解析请求的内容提取文件数据
            @SuppressWarnings("unchecked")
            List<FileItem> formItems = upload.parseRequest(request);

            if (formItems != null && formItems.size() > 0) {
                // 迭代表单数据
                for (FileItem item : formItems) {
                    // 处理不在表单中的字段
                    if (!item.isFormField()) {

                        Date date = new Date();
                        DateFormat format = new SimpleDateFormat(
                                "yyyy-MM-dd-HH-mm-ss");
                        String time = format.format(date);
                        String filePath = uploadPath + File.separator + time
                                + ".jpg";
                        File storeFile = new File(filePath);
                        // 使用CommonUtils工具类将请求数据封装到bean中
                        Product p = CommonsUtils.toBean(request
                                .getParameterMap(), Product.class);
                        String url = "/" + "shopping" + "/" + UPLOAD_DIRECTORY
                                + "/" + time + ".jpg";
                        p.setImgurl(url);
                        // 执行更改业务
                        ps.upload(p, p.getId());

                        // 在控制台输出文件的上传路径
                         System.out.println(filePath);
                        System.out.println("/" + "shopping" + "/"
                                + UPLOAD_DIRECTORY + "/" + time + ".jpg");
                        // 保存文件到硬盘
                        item.write(storeFile);
                        request.setAttribute("message", "文件上传成功!");
                    }
                }
            }
        } catch (Exception ex) {
            request.setAttribute("message", "错误信息: " + ex.getMessage());
        }
        response.getWriter().print("上传成功,三秒后跳转到功能界面......");
        response.setHeader("Refresh", "3;url=/shopping/admin/list.jsp");
    }

}

package cn.edu.aynu.rjxy.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

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

import cn.edu.aynu.rjxy.bean.Order;
import cn.edu.aynu.rjxy.bean.OrderItem;
import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.service.OrderService;
import cn.edu.aynu.rjxy.utils.CommonsUtils;

public class OrderServlet extends HttpServlet {
    private OrderService orderService = new OrderService();

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 处理中文乱码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        // 获取隐藏字段method的值，并把它转换为int型
        int method = Integer.parseInt(request.getParameter("method"));

        switch (method) {
        case 1:
            this.addOrder(request, response);
            break;
        case 2:
            this.findMyOrder(request, response);
            break;
        case 3:
            this.findOrderItem(request, response);
            break;
        case 4:
            this.delete(request, response);
            break;

        }

    }

    // 添加订单和订单项
    public void addOrder(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        /**
         * 1、判断用户是否登录，如果未登录就重定向到login.jsp 2、使用工具类将订单表中的信息封装成order对象，补全剩余的字段
         * 3、从session中获取购物车，遍历购物车，创建订单项，把它们加入list集合 4、添加订单和订单项
         */
        User user = (User) request.getSession().getAttribute("user");
        if (user == null) {
            response.sendRedirect("jsp/login.jsp");
            return;
        }
        Order order = CommonsUtils.toBean(request.getParameterMap(),
                Order.class);
        // 补全字段
        order.setId(CommonsUtils.uuid());
        order.setOrdertime(new Date());
        order.setPaysate(0);
        order.setUser_id(user.getId());
        Map<Product, Integer> cart = (Map<Product, Integer>) request
                .getSession().getAttribute("cart");
        List<OrderItem> list = new ArrayList<OrderItem>();
        for (Product p : cart.keySet()) {
            OrderItem orderItem = new OrderItem();
            orderItem.setId(CommonsUtils.uuid());
            orderItem.setOrder_id(order.getId());
            orderItem.setProduct_id(p.getId());
            orderItem.setBuynum(cart.get(p));
            orderItem.setSubtotal(p.getPrice() * orderItem.getBuynum());
            // 订单项加入list集合
            list.add(orderItem);
        }
        order.setList(list);
        // 添加订单和订单项
        String result = orderService.addOrder(order);
        request.setAttribute("orderResult", result);
        response.getWriter().print("购买成功,三秒后跳转到商品界面......");
        response.setHeader("Refresh", "3;url=/shopping/index.jsp");
    }

    // 查看我的订单
    public void findMyOrder(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        /**
         * 1、用户已经登录，从session中获取用户信息，从用户信息中得到user_id 2、调用方法得到用户的订单的集合
         * 3、通过请求转发将订单集合显示在myorder.jsp页面上
         */
        User user = (User) request.getSession().getAttribute("user");
        String user_id = user.getId();
        List<Order> list = orderService.findMyOrder(user_id);
        request.setAttribute("myorderList", list);
        request.getRequestDispatcher("/jsp/myorder.jsp").forward(request,
                response);

    }

    // 查看我的订单的详情
    public void findOrderItem(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        /**
         * 1、从请求转发中获取订单的id 2、调用方法得到订单详情的集合 3、通过请求转发将订单详情在orderItem.jsp页面上显示
         */
        String order_id = request.getParameter("order_id");
        System.out.println(order_id + "ssssss");
        List<OrderItem> list = orderService.findOrderItem(order_id);
        request.setAttribute("orderItemList", list);
        request.getRequestDispatcher("/jsp/orderitem.jsp").forward(request,
                response);

    }

    public void delete(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 从请求中获取id
        String id = request.getParameter("id");
        // 执行删除客户业务
        orderService.delete(id);
        // 给客户端发送删除成功提示
        response.getWriter().print("删除成功,三秒后跳转到功能界面......");
        response.setHeader("Refresh", "3;url=/shopping/admin/list.jsp");

    }
}

package cn.edu.aynu.rjxy.servlet;

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.service.ProductService;

/**
 * 调用ProductService的方法
 * 
 * @author Administrator
 * 
 */
public class ProductServlet extends HttpServlet {
    private ProductService ps = new ProductService();

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 处理中文乱码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        // 获取隐藏字段method的值，并把它转换为int型
        int method = Integer.parseInt(request.getParameter("method"));

        switch (method) {
        case 1:
            this.findAll(request, response);
            break;
        case 2:
            this.addCart(request, response);
            break;
        }

    }

    // 处理查询所有商品的请求
    public void findAll(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        List<Product> list = ps.findAll();
        request.setAttribute("listProduct", list);
        // 通过请求转发将商品信息显示在product.jsp页面上
        request.getRequestDispatcher("/jsp/product.jsp").forward(request,
                response);
    }

    // 处理添加购物车的请求
    public void addCart(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 获取商品的id
        String id = request.getParameter("id");
        // 得到商品
        Product p = ps.findById(id);
        // 购物车是保存在session中
        HttpSession session = request.getSession();
        // 从session中拿到购物车
        Map<Product, Integer> cart = (Map<Product, Integer>) session
                .getAttribute("cart");
        // 如果cart不存在，就创建购物车
        if (cart == null) {
            cart = new HashMap<Product, Integer>();
        }
        /**
         * 遍历Map中的所有key也就是商品对象，如果发现有的商品的id和 即将加入购物车的id相同，就在原来的数量上＋1
         */
        Iterator<Product> it = cart.keySet().iterator();
        boolean f = true;
        while (it.hasNext()) {
            Product pp = (Product) it.next();
            if (pp.getId().equals(p.getId())) {
                cart.put(pp, cart.get(pp) + 1);
                f = false;
            }
        }
        // 如果没有发现购物车原来相同的商品，就直接加入
        if (f) {
            cart.put(p, 1);
        }
        // 将cart放入session
        session.setAttribute("cart", cart);
        // 重定向
        response.sendRedirect("jsp/cart.jsp");

    }

}

package cn.edu.aynu.rjxy.servlet;

import java.io.IOException;
import java.io.PrintWriter;

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

import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.exception.UserException;
import cn.edu.aynu.rjxy.service.UserService;
import cn.edu.aynu.rjxy.utils.CommonsUtils;

/**
 * 调用UserService里面的方法
 * 
 * @author Administrator
 * 
 */
public class UserServlet extends HttpServlet {

    private UserService userService = new UserService();

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 处理中文乱码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        // 获取隐藏字段method的值，并把它转换为int型
        int method = Integer.parseInt(request.getParameter("method"));

        switch (method) {
        case 1:
            this.register(request, response);
            break;
        case 2:
            this.login(request, response);
            break;

        }
    }

    public void register(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        /**
         * 1、将注册表单中的用户信息封装到user对象中 2、将获取的ＵＵＩＤ值作为ｕｓｅｒ对象的ｉｄ
         * ３、注册，如果发生异常，就到register.jsp页面上显示：用户已存在 如果成功，显示注册成功，3秒后就跳转到index.jsp页面。
         */
        User user = CommonsUtils.toBean(request.getParameterMap(), User.class);
        user.setId(CommonsUtils.uuid());
        try {
            userService.register(user);
            request.setAttribute("msg", "注册成功");
            request.getRequestDispatcher("/jsp/index.jsp").forward(request,
                    response);
        } catch (UserException e) {
            request.setAttribute("msg", e.getMessage());
            // 将用户在注册表单中输入的信息保存在request域中，请求转发的register.jsp，目的回显
            request.setAttribute("user", user);
            request.getRequestDispatcher("/jsp/register.jsp").forward(request,
                    response);
        }
    }

    public void login(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        /**
         * 1、将用户登录表单中的信息封装成User对象 2、登录，如果发生异常，就转发到login.jsp页面，显示：异常信息
         * 如果成功，就将查询到的user对象u，存放到session域中 然后转发到shopping.jsp页面，显示：欢迎用户登录
         */
        User user = CommonsUtils.toBean(request.getParameterMap(), User.class);
        System.out.println(user + "-------->");
        try {
            User u = userService.login(user);
            System.out.println(u + ">>>>");
            // 将u存放到session域中
            request.getSession().setAttribute("user", u);
            request.getRequestDispatcher("/jsp/index.jsp").forward(request,
                    response);
        } catch (UserException e) {
            request.setAttribute("msg", e.getMessage());
            request.setAttribute("user", user); // 回显
            request.getRequestDispatcher("/jsp/login.jsp").forward(request,
                    response);
        }
    }
}

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;

import cn.edu.aynu.rjxy.bean.Admin;
import cn.edu.aynu.rjxy.dao.AdminDao;

public class AdminService {
    private AdminDao aDao = new AdminDao();

    /**
     * 根据用户名和密码查询用户
     * 
     * @param cid
     */
    public Admin login(String username, String password) {
        try {
            return aDao.findByCid(username, password);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;
import java.util.List;

import cn.edu.aynu.rjxy.bean.Order;
import cn.edu.aynu.rjxy.bean.OrderItem;
import cn.edu.aynu.rjxy.dao.OrderDao;
import cn.edu.aynu.rjxy.dao.OrderItemDao;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 调用dao里面的方法
 * 
 * @author Administrator
 * 
 */
public class OrderService {
    private OrderDao orderDao = new OrderDao();
    private OrderItemDao orderItemDao = new OrderItemDao();

    // 添加订单和订单项
    public String addOrder(Order order) {
        try {
            // 开启事物
            JDBCUtils.startTransaction();
            // 添加订单
            orderDao.add(order);
            // 获取订单项的集合
            List<OrderItem> list = order.getList();
            // 遍历订单项目，依次将它们插入orderitem表中
            for (OrderItem orderItem : list) {
                // 添加订单项
                orderItemDao.addItem(orderItem);
            }
            // 提交事务
            JDBCUtils.commit();
            return "success";
        } catch (Exception e) {
            // 回滚事务
            JDBCUtils.rollback();
            e.printStackTrace();
            return "fail";
        }
    }

    // 查看所有的订单
    public List<Order> findAllOrder() {
        try {
            return orderDao.findAllOrder();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    // 查看我的订单
    public List<Order> findMyOrder(String user_id) {
        try {
            return orderDao.findOrderByUser_id(user_id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    // 查看某个订单
    public List<OrderItem> findOrderItem(String order_id) {
        try {
            return orderItemDao.findOrderItem(order_id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    // 删除某个订单
    public void delete(String id) {
        try {
            orderDao.deleteById(id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;
import java.util.List;

import cn.edu.aynu.rjxy.bean.Page;
import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.dao.ProductDao;

/**
 * 调用ProductDao的方法
 * 
 * @author Administrator
 * 
 */
public class ProductService {
    private ProductDao pDao = new ProductDao();

    /**
     * 添加商品
     * 
     * @param c
     */
    public void add(Product p) {
        try {
            pDao.insert(p);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    //上传照片
    public  void upload(Product p,String id){
        try {
            pDao.insertURL(p, id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 删除客户业务
     */
    public void delete(String cid) {
        try {
            pDao.delete(cid);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 编辑修改商品
     * 
     * @param c
     */
    public void edit(Product p) {
        try {
            pDao.update(p);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    // 查询所有商品
    public List<Product> findAll() {
        try {
            return pDao.findAll();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    // 查看某一商品
    public Product findById(String id) {
        try {
            return pDao.findProductById(id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 分页查询
     * 
     * @param pageCode
     * @return
     */
    public Page queryByPage(int pageCode) {
        try {
            // 获取总记录数
            int totalRecord = pDao.queryTotalRecord();
            // 创建Page
            Page pb = new Page(pageCode, totalRecord);
            // 查询当前页的记录
            List<Product> datas = pDao.queryByPage((pageCode - 1)
                    * pb.getPageSize(), pb.getPageSize());
            // 将datas封装到pb
            pb.setDatas(datas);
            return pb;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;

import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.dao.UserDao;
import cn.edu.aynu.rjxy.exception.UserException;

/**
 * 调用dao层的方法
 * 
 * @author Administrator
 * 
 */
public class UserService {
    private UserDao userDao = new UserDao();

    /**
     * 用户注册 1、检测输入的用户名是否存在，如果存在抛出异常“用户已存在” 2、把输入的用户添加到数据库中的user表
     * 
     * @throws UserException
     */
    public void register(User user) throws UserException {
        try {
            // 检测用户是否存在
            User u = userDao.findByUsername(user.getUsername());
            // 如果存在抛出异常否则添加用户到user表
            if (u != null) {
                throw new UserException("用户已经存在");
            } else {
                userDao.add(user);
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 用户登录
     * 
     * @throws UserException
     */
    public User login(User user) throws UserException {
        try {
            // 根据用户名查询user表得到user对象u
            User u = userDao.findByUsername(user.getUsername());
            /**
             * 如果u为null，说明用户不存在，抛出异常，显示用户不存在 否则说明用户存在，检测u对象中的密码和用户输入的面貌是否一致
             * 如果一致，返回查询到的u否则抛出异常，显示密码错误
             */
            if (u == null) {
                throw new UserException("用户名不存在");
            }
            // 查询到的用户密码和用户名输入的密码不一致
            if (!u.getPassword().equals(user.getPassword())) {
                throw new UserException("密码错误");
            }
            return u;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }

    }
}

package cn.edu.aynu.rjxy.dao;

import java.sql.SQLException;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;

import cn.edu.aynu.rjxy.bean.Admin;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对管理员表的操作
 * 
 * @author Administrator
 * 
 */
public class AdminDao {
    QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());

    /**
     * 根据用户名和用户密码查询
     * 
     * @return
     * @throws SQLException
     */
    public Admin findByCid(String username, String password)
            throws SQLException {
        String sql = "select * from admin where username=?&&password=?";
        Admin admin = qr.query(sql, new BeanHandler<Admin>(Admin.class),
                username, password);
        return admin;
    }
}

package cn.edu.aynu.rjxy.dao;

import java.sql.Connection;
import java.sql.Date;
import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import cn.edu.aynu.rjxy.bean.Order;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对order1表的操作
 * 
 * @author Administrator
 * 
 */
public class OrderDao {
    private QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());

    // 添加订单到数据库表order1中
    public void add(Order order) throws Exception {
        Connection conn = JDBCUtils.getConnection();
        String sql = "insert into order1 values(?,?,?,?,?,?,?,?)";
        // 订单生成时间，由java.util.Date----->java.sql.Date
        Date date = new Date(order.getOrdertime().getTime());
        qr.update(conn, sql, order.getId(), order.getTotalMoney(), order
                .getReceiverAddress(), order.getReceiverName(), order
                .getReceiverPhone(), order.getPaysate(), date, order
                .getUser_id());

    }

    // 查看所有用户的订单
    public List<Order> findAllOrder() throws SQLException {
        String sql = "select * from order1";
        return qr.query(sql, new BeanListHandler<Order>(Order.class));
    }

    // 根据user_id查看用户的订单
    public List<Order> findOrderByUser_id(String user_id) throws SQLException {
        String sql = "select * from order1 where user_id = ?";
        return qr.query(sql, new BeanListHandler<Order>(Order.class), user_id);
    }

    // 根据user_id删除用户的订单
    public void deleteById(String id) throws SQLException {
        String sql = "delete from order1 where id=?";
        qr.update(sql, id);
    }
}

package cn.edu.aynu.rjxy.dao;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import cn.edu.aynu.rjxy.bean.OrderItem;
import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对orderItem表的操作
 * 
 * @author Administrator
 * 
 */
public class OrderItemDao {
    private QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());

    // 添加订单项到数据库表orderitem中
    public void addItem(OrderItem orderItem) throws Exception {
        Connection conn = JDBCUtils.getConnection();
        String sql = "insert into orderitem values(?,?,?,?,?)";
        qr.update(conn, sql, orderItem.getId(), orderItem.getOrder_id(),
                orderItem.getProduct_id(), orderItem.getBuynum(), orderItem
                        .getSubtotal());
    }

    // 查询某一个订单的所有订单项
    public List<OrderItem> findOrderItem(String order_id) throws SQLException {
        // 查询某一订单所包含的订单项
        String sql = "select * from orderitem where order_id = ?";
        List<OrderItem> orderItemList = qr.query(sql,
                new BeanListHandler<OrderItem>(OrderItem.class), order_id);
        // 查询某一订单所包含的订单项对应的商品信息
        sql = "select p.id,p.name,p.price from product p,orderitem oi where p.id = oi.product_id  and  order_id = ?";
        List<Product> productList = qr.query(sql, new BeanListHandler<Product>(
                Product.class), order_id);
        // 将查询出来的商品作为订单项的属性进行添加
        for (OrderItem oi : orderItemList) {
            for (Product p : productList) {
                if (oi.getProduct_id().equals(p.getId())) {
                    oi.setProduct(p);
                }
            }
        }
        return orderItemList;
    }
}

package cn.edu.aynu.rjxy.dao;

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.ScalarHandler;

import cn.edu.aynu.rjxy.bean.Product;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对product表进行增删改查
 * 
 * @author Administrator
 * 
 */
public class ProductDao {
    QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());

    /**
     * 添加商品
     * 
     * @param c
     * @throws SQLException
     */
    public void insert(Product p) throws SQLException {
        String sql = "insert into product(id,name,price,category,pnum,description) values(?,?,?,?,?,?)";
        qr.update(sql, p.getId(), p.getName(), p.getPrice(), p.getCategory(), p
                .getPnum(),  p.getDescription());
    }
    
    public void insertURL(Product p,String id) throws SQLException {
        String sql = "update product set imgurl = ? where id =?";
        qr.update(sql, p.getImgurl(),id);
    }

    // 查询所有商品
    public List<Product> findAll() throws SQLException {
        String sql = "select * from product";
        List<Product> list = qr.query(sql, new BeanListHandler<Product>(
                Product.class));
        return list;
    }

    // 根据id查找商品
    public Product findProductById(String id) throws SQLException {
        String sql = "select * from product where id=?";
        return qr.query(sql, new BeanHandler<Product>(Product.class), id);
    }

    /**
     * 根据传过来的id，删除商品
     * 
     * @throws SQLException
     * 
     */
    public void delete(String id) throws SQLException {
        String sql = "delete from product where id=?";
        qr.update(sql, id);
    }

    /**
     * 修改商品属性
     * 
     * @throws SQLException
     */
    public void update(Product p) throws SQLException {
        String sql = "update product set name=?,price=?,category=?,pnum=?,imgurl=?,description=? where id=?";
        qr.update(sql, p.getName(), p.getPrice(), p.getCategory(), p.getPnum(),
                p.getImgurl(), p.getDescription(), p.getId());
    }

    /**
     * 查询总记录数
     * 
     * @throws SQLException
     * 
     */
    public int queryTotalRecord() throws SQLException {
        String sql = "select count(*) from product";
        Long num = qr.query(sql, new ScalarHandler<Long>());
        return num.intValue();
    }

    /**
     * 分页查询
     * 
     * @throws SQLException
     * 
     */
    public List<Product> queryByPage(int recordStartIndex, int pageSize)
            throws SQLException {
        String sql = "select * from product limit ?,?";
        List<Product> datas = qr.query(sql, new BeanListHandler<Product>(
                Product.class), recordStartIndex, pageSize);
        return datas;
    }
}

package cn.edu.aynu.rjxy.dao;

import java.sql.SQLException;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;

import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对User表的操作
 * 
 * @author Administrator
 * 
 */
public class UserDao {
    QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());

    /**
     * 添加用户到user表
     * 
     * @throws SQLException
     */
    public void add(User user) throws SQLException {
        String sql = "insert into user(id,username,password) values(?,?,?)";
        qr.update(sql, user.getId(), user.getUsername(), user.getPassword());
    }

    /**
     * 通过用户名查找用户
     * 
     * @throws SQLException
     */
    public User findByUsername(String username) throws SQLException {
        String sql = "select * from user where username = ?";
        User user = qr.query(sql, new BeanHandler<User>(User.class), username);
        return user;
    }
}

http://lijun0349-163-com.iteye.com/blog/2008680

http://blog.sina.com.cn/s/blog_ae96abfd0101p9bf.html

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原文地址：https://www.cnblogs.com/kangyaping/p/6165842.html