购物车及支付

购物车设计

实体类

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

import com.itheima.domain.Book;
/*
 * 购物车：
 * 同一本书对应着一个购物项
 */
public class Cart implements Serializable {
    //key:购物项对应的书籍的ID，value：书籍对应的购物项
    private Map<String, CartItem> items = new HashMap<String, CartItem>();
    private int totalNum;//总数量
    private float totalMoney;//总金额：付款金额
    public Map<String, CartItem> getItems() {
        return items;
    }
    public int getTotalNum() {
        totalNum = 0;
        for(Map.Entry<String, CartItem> me:items.entrySet()){
            totalNum+=me.getValue().getNum();
        }
        return totalNum;
    }
    public float getTotalMoney() {
        totalMoney = 0;
        for(Map.Entry<String, CartItem> me:items.entrySet()){
            totalMoney+=me.getValue().getPrice();
        }
        return totalMoney;
    }
    //项购物车的items中添加一本书
    public void addBook(Book book){
        if(items.containsKey(book.getId())){
            //items有这本书对应的购物项了
            CartItem item = items.get(book.getId());
            item.setNum(item.getNum()+1);
        }else{
            CartItem item = new CartItem(book);
            item.setNum(1);
            items.put(book.getId(), item);
        }
    }
}

import java.io.Serializable;

import com.itheima.domain.Book;
/**
 * 代表着一个购物项，一项就对应着一本书
 * @author wzhting
 *
 */
public class CartItem implements Serializable {
    private Book book;
    private int num;//数量
    private float price;//小计
    
    public CartItem(Book book){
        this.book  = book;
    }

    public Book getBook() {
        return book;
    }

    public void setBook(Book book) {
        this.book = book;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }

    public float getPrice() {
        return book.getMoney()*num;
    }

//    public void setPrice(float price) {
//        this.price = price;
//    }
    
}

控制层

public class ControllerServlet extends HttpServlet {
    private BusinessService s = new BusinessServiceImpl();
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String op = request.getParameter("op");
        if("buyBook".equals(op)){
            buyBook(request,response);
        }else if("delOneFormCart".equals(op)){
            delOneFormCart(request,response);
        }else if("changeCartItemNum".equals(op)){
            changeCartItemNum(request,response);
        }
    }
    //修改购物项的数量
    private void changeCartItemNum(HttpServletRequest request,
            HttpServletResponse response)throws ServletException, IOException {
        String bookId = request.getParameter("bookId");
        String newnum = request.getParameter("newnum");
        Cart cart = (Cart) request.getSession().getAttribute("cart");
        cart.getItems().get(bookId).setNum(Integer.parseInt(newnum));
        response.sendRedirect(request.getContextPath()+"/showCart.jsp");
    }
    //从购物车中删除一项
    private void delOneFormCart(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException{
        String bookId = request.getParameter("bookId");
        Cart cart = (Cart) request.getSession().getAttribute("cart");
        cart.getItems().remove(bookId);
        response.sendRedirect(request.getContextPath()+"/showCart.jsp");
    }
    //把书籍放入购物车
    private void buyBook(HttpServletRequest request,
            HttpServletResponse response)throws ServletException, IOException {
        //获取要购物买的书籍
        String bookId = request.getParameter("bookId");
        Book book = s.findBookById(bookId);
        //从HttpSession中先查，不在时创建一个新的购物车
        HttpSession session = request.getSession();
        Cart cart = (Cart)session.getAttribute("cart");
        if(cart==null){
            cart = new Cart();
            session.setAttribute("cart", cart);
        }
        //把书籍放入购物车中
        cart.addBook(book);
        //提示购买成功
        response.getWriter().write("<script type='text/javascript'>alert('购买成功')</script>");
        response.setHeader("Refresh", "0;URL="+request.getContextPath());
    }
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

}

视图层　

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/top.jsp"%>
    <c:if test="${empty sessionScope.cart.items}">
        您还没有购买任何商品    
    </c:if>
    <c:if test="${!empty sessionScope.cart.items }">
        <h3>您购买的商品如下</h3>
        <table border="1" width="438">
            <tr>
                <th>书名</th>
                <th>数量</th>
                <th>单价</th>
                <th>小计</th>
                <th>操作</th>
            </tr>
            <c:forEach items="${sessionScope.cart.items}" var="me" varStatus="vs">
                <tr class="${vs.index%2==0?'odd':'even'}">
                    <td>${me.value.book.name}</td>
                    <td><input type="text" size="3" value="${me.value.num}" onchange="changeNum(this,${me.value.num},'${me.key}')"/></td>
                    <td>${me.value.book.money}</td>
                    <td>${me.value.price}</td>
                    <td>
                        <a href="javascript:delOneItem('${me.key}')">删除</a>
                    </td>
                </tr>
            </c:forEach>
            <tr>
                <td colspan="5" align="right">
                    总数量：${sessionScope.cart.totalNum}&nbsp;&nbsp;
                    应付金额：${sessionScope.cart.totalMoney}&nbsp;&nbsp;
                    <a href="${pageContext.request.contextPath}/servlet/ControllerServlet?op=genOrders">去付款</a>
                </td>
            </tr>
        </table>
    </c:if>
    <script type="text/javascript">
        //输入验证：客户端验证（js）；服务器段验证（保证安全）；开发中：客户端+服务器段
    
        function delOneItem(bookId){
            var sure = window.confirm("确定要删除该项吗？");
            if(sure){
                window.location.href="${pageContext.request.contextPath}/servlet/ControllerServlet?op=delOneFormCart&bookId="+bookId;
            }
        }
        function changeNum(inputObj,oldNum,bookId){
            var newnum = inputObj.value;
            
            if(!/^[1-9][0-9]*$/.test(newnum)){
                alert("请输入正确的数值");
                inputObj.value = oldNum;
                return;
            }
            
            var sure = window.confirm("确定要修改数量吗");
            if(sure){
                window.location.href="${pageContext.request.contextPath}/servlet/ControllerServlet?op=changeCartItemNum&bookId="+bookId+"&newnum="+newnum;
            }else{
                inputObj.value = oldNum;
            }
        }
    </script>
  </body>
</html>

 

生成订单

表的设计

实体类设计

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
//订单
public class Orders implements Serializable {
    private String ordersnum;//订单号，作为主键
    private float money;//订单金额----购物车的总金额
    private int num;//有多少件商品
    private int status;//订单状态  0未付款 1已付款 2 已发货
    private Customer customer;
    private List<OrdersItem> items = new ArrayList<OrdersItem>();//该订单对应的订单项
    
    public String getOrdersnum() {
        return ordersnum;
    }
    public void setOrdersnum(String ordersnum) {
        this.ordersnum = ordersnum;
    }
    public float getMoney() {
        return money;
    }
    public void setMoney(float money) {
        this.money = money;
    }
    public int getNum() {
        return num;
    }
    public void setNum(int num) {
        this.num = num;
    }
    public int getStatus() {
        return status;
    }
    public void setStatus(int status) {
        this.status = status;
    }
    public Customer getCustomer() {
        return customer;
    }
    public void setCustomer(Customer customer) {
        this.customer = customer;
    }
    public List<OrdersItem> getItems() {
        return items;
    }
    public void setItems(List<OrdersItem> items) {
        this.items = items;
    }
    
}

import java.io.Serializable;

public class OrdersItem implements Serializable {
    private String id;//主键
    private int num;//订单项数量
    private float money;//小计
    private Book book;
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public int getNum() {
        return num;
    }
    public void setNum(int num) {
        this.num = num;
    }
    public float getMoney() {
        return money;
    }
    public void setMoney(float money) {
        this.money = money;
    }
    public Book getBook() {
        return book;
    }
    public void setBook(Book book) {
        this.book = book;
    }
    
}

控制器设计

public class ControllerServlet extends HttpServlet {
    private BusinessService s = new BusinessServiceImpl();
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String op = request.getParameter("op");
        if("showMyOrders".equals(op)){
            showMyOrders(request,response);
        }
    }
    //查看用户自己的订单
    private void showMyOrders(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException{
        HttpSession session = request.getSession();
        Customer c = (Customer) session.getAttribute("customer");
        if(c==null){
            response.getWriter().write("<script type='text/javascript'>alert('请先登录')</script>");
            response.setHeader("Refresh", "0;URL="+request.getContextPath()+"/login.jsp");
            return;
        }
        List<Orders> os = s.findOrdersByCustomer(c.getId());
        request.setAttribute("os", os);
        request.getRequestDispatcher("/showOrders.jsp").forward(request, response);
    }
}

DAO层

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

import com.itheima.dao.OrdersDao;
import com.itheima.domain.Orders;
import com.itheima.domain.OrdersItem;
import com.itheima.util.DBCPUtil;

public class OrdersDaoMySQLImpl implements OrdersDao {
    private QueryRunner qr = new QueryRunner(DBCPUtil.getDataSource());

    public void save(Orders os) {
        if(os==null)
            throw new IllegalArgumentException("保存的订单不能为空");
        if(os.getCustomer()==null)
            throw new IllegalArgumentException("请设置订单所属的客户");
        //保存订单的基本信息
        try {
            qr.update("insert into orders (ordersnum,money,num,status,customerid) values(?,?,?,?,?)", 
                    os.getOrdersnum(),os.getMoney(),os.getNum(),
                    os.getStatus(),os.getCustomer().getId());
            //保存订单项信息
            List<OrdersItem> items = os.getItems();
            if(items!=null&&items.size()>0){
                for(OrdersItem item:items){
                    qr.update("insert into ordersitem (id,num,money,bookid,ordersnum) values(?,?,?,?,?)", 
                            item.getId(),item.getNum(),item.getMoney(),
                            item.getBook().getId(),os.getOrdersnum());
                }
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public void update(Orders os) {
        try {
            qr.update("update orders set money=?,num=?,status=? where ordersnum=?", 
                    os.getMoney(),os.getNum(),
                    os.getStatus(),os.getOrdersnum());
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public Orders findByOrdersNum(String ordersNum) {
        try {
            return qr.query("select * from orders where ordersnum=?", new BeanHandler<Orders>(Orders.class), ordersNum);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public List<Orders> findOrdersByCustomer(String customerId) {
        try {
            return qr.query("select * from orders where customerid=? order by ordersnum desc", new BeanListHandler<Orders>(Orders.class), customerId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

}

视图层

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/top.jsp"%>
    <c:if test="${empty os}">
        您还没有下过单    
    </c:if>
    <c:if test="${!empty os }">
        <h3>一个月的订单如下</h3>
        <table border="1" width="438">
            <tr>
                <th>订单号</th>
                <th>金额</th>
                <th>状态</th>
                <th>操作</th>
            </tr>
            <c:forEach items="${os}" var="o" varStatus="vs">
                <tr class="${vs.index%2==0?'odd':'even'}">
                    <td>${o.ordersnum}</td>
                    <td>${o.money}</td>
                    <td>
                        <c:choose>
                            <c:when test="${o.status==0}">
                                未付款<a href="${pageContext.request.contextPath}/servlet/ControllerServlet?op=payUI&ordersnum=${o.ordersnum}">付款</a>
                            </c:when>
                            <c:when test="${o.status==1}">
                                已付款
                            </c:when>
                            <c:otherwise>
                                已发货
                            </c:otherwise>
                        </c:choose>
                    </td>
                    <td>
                        <a href="">详细</a>
                    </td>
                </tr>
            </c:forEach>
        </table>
    </c:if>
   
  </body>
</html>

在线支付

支付过程图：

油条类

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

public class PaymentUtil {

    private static String encodingCharset = "UTF-8";
    
    /**
     * 生成hmac方法
     * 
     * @param p0_Cmd 业务类型
     * @param p1_MerId 商户编号
     * @param p2_Order 商户订单号
     * @param p3_Amt 支付金额
     * @param p4_Cur 交易币种
     * @param p5_Pid 商品名称
     * @param p6_Pcat 商品种类
     * @param p7_Pdesc 商品描述
     * @param p8_Url 商户接收支付成功数据的地址
     * @param p9_SAF 送货地址
     * @param pa_MP 商户扩展信息
     * @param pd_FrpId 银行编码
     * @param pr_NeedResponse 应答机制
     * @param keyValue 商户密钥
     * @return
     */
    public static String buildHmac(String p0_Cmd,String p1_MerId,
            String p2_Order, String p3_Amt, String p4_Cur,String p5_Pid, String p6_Pcat,
            String p7_Pdesc,String p8_Url, String p9_SAF,String pa_MP,String pd_FrpId,
            String pr_NeedResponse,String keyValue) {
        StringBuilder sValue = new StringBuilder();
        // 业务类型
        sValue.append(p0_Cmd);
        // 商户编号
        sValue.append(p1_MerId);
        // 商户订单号
        sValue.append(p2_Order);
        // 支付金额
        sValue.append(p3_Amt);
        // 交易币种
        sValue.append(p4_Cur);
        // 商品名称
        sValue.append(p5_Pid);
        // 商品种类
        sValue.append(p6_Pcat);
        // 商品描述
        sValue.append(p7_Pdesc);
        // 商户接收支付成功数据的地址
        sValue.append(p8_Url);
        // 送货地址
        sValue.append(p9_SAF);
        // 商户扩展信息
        sValue.append(pa_MP);
        // 银行编码
        sValue.append(pd_FrpId);
        // 应答机制
        sValue.append(pr_NeedResponse);
        
        return PaymentUtil.hmacSign(sValue.toString(), keyValue);
    }
    
    /**
     * 返回校验hmac方法
     * 
     * @param hmac 支付网关发来的加密验证码
     * @param p1_MerId 商户编号
     * @param r0_Cmd 业务类型
     * @param r1_Code 支付结果
     * @param r2_TrxId 易宝支付交易流水号
     * @param r3_Amt 支付金额
     * @param r4_Cur 交易币种
     * @param r5_Pid 商品名称
     * @param r6_Order 商户订单号
     * @param r7_Uid 易宝支付会员ID
     * @param r8_MP 商户扩展信息
     * @param r9_BType 交易结果返回类型
     * @param keyValue 密钥
     * @return
     */
    public static boolean verifyCallback(String hmac, String p1_MerId,
            String r0_Cmd, String r1_Code, String r2_TrxId, String r3_Amt,
            String r4_Cur, String r5_Pid, String r6_Order, String r7_Uid,
            String r8_MP, String r9_BType, String keyValue) {
        StringBuilder sValue = new StringBuilder();
        // 商户编号
        sValue.append(p1_MerId);
        // 业务类型
        sValue.append(r0_Cmd);
        // 支付结果
        sValue.append(r1_Code);
        // 易宝支付交易流水号
        sValue.append(r2_TrxId);
        // 支付金额
        sValue.append(r3_Amt);
        // 交易币种
        sValue.append(r4_Cur);
        // 商品名称
        sValue.append(r5_Pid);
        // 商户订单号
        sValue.append(r6_Order);
        // 易宝支付会员ID
        sValue.append(r7_Uid);
        // 商户扩展信息
        sValue.append(r8_MP);
        // 交易结果返回类型
        sValue.append(r9_BType);
        String sNewString = PaymentUtil.hmacSign(sValue.toString(), keyValue);
        return sNewString.equals(hmac);
    }
    
    /**
     * @param aValue
     * @param aKey
     * @return
     */
    public static String hmacSign(String aValue, String aKey) {
        byte k_ipad[] = new byte[64];
        byte k_opad[] = new byte[64];
        byte keyb[];
        byte value[];
        try {
            keyb = aKey.getBytes(encodingCharset);
            value = aValue.getBytes(encodingCharset);
        } catch (UnsupportedEncodingException e) {
            keyb = aKey.getBytes();
            value = aValue.getBytes();
        }

        Arrays.fill(k_ipad, keyb.length, 64, (byte) 54);
        Arrays.fill(k_opad, keyb.length, 64, (byte) 92);
        for (int i = 0; i < keyb.length; i++) {
            k_ipad[i] = (byte) (keyb[i] ^ 0x36);
            k_opad[i] = (byte) (keyb[i] ^ 0x5c);
        }

        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {

            return null;
        }
        md.update(k_ipad);
        md.update(value);
        byte dg[] = md.digest();
        md.reset();
        md.update(k_opad);
        md.update(dg, 0, 16);
        dg = md.digest();
        return toHex(dg);
    }

    public static String toHex(byte input[]) {
        if (input == null)
            return null;
        StringBuffer output = new StringBuffer(input.length * 2);
        for (int i = 0; i < input.length; i++) {
            int current = input[i] & 0xff;
            if (current < 16)
                output.append("0");
            output.append(Integer.toString(current, 16));
        }

        return output.toString();
    }

    /**
     * 
     * @param args
     * @param key
     * @return
     */
    public static String getHmac(String[] args, String key) {
        if (args == null || args.length == 0) {
            return (null);
        }
        StringBuffer str = new StringBuffer();
        for (int i = 0; i < args.length; i++) {
            str.append(args[i]);
        }
        return (hmacSign(str.toString(), key));
    }

    /**
     * @param aValue
     * @return
     */
    public static String digest(String aValue) {
        aValue = aValue.trim();
        byte value[];
        try {
            value = aValue.getBytes(encodingCharset);
        } catch (UnsupportedEncodingException e) {
            value = aValue.getBytes();
        }
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("SHA");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
        return toHex(md.digest(value));

    }
    
//    public static void main(String[] args) {
//        System.out.println(hmacSign("AnnulCard1000043252120080620160450.0http://localhost/SZXpro/callback.asp杩?4564868265473632445648682654736324511","8UPp0KE8sq73zVP370vko7C39403rtK1YwX40Td6irH216036H27Eb12792t"));
//    }
}

控制层servlet

public class ControllerServlet extends HttpServlet {
    private BusinessService s = new BusinessServiceImpl();
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String op = request.getParameter("op");
        if("payUI".equals(op)){
            payUI(request,response);
        }else if("pay".equals(op)){
            pay(request,response);
        }else if("showMyOrders".equals(op)){
            showMyOrders(request,response);
        }
    }
    //支付：准备数据
    private void pay(HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException{
        String ordersnum = request.getParameter("ordersnum");
        String money = request.getParameter("money");
        
        String pd_FrpId = request.getParameter("pd_FrpId");//支付通道
        
        String p0_Cmd = "Buy";
        String p1_MerId = "10001126856";//在第三方申请的编号
        String p2_Order = ordersnum;
        String p3_Amt = money;
        String p4_Cur = "CNY";
        String p5_Pid = "aaa";
        String p6_Pcat = "bbb";
        String p7_Pdesc = "ccc";
        String p8_Url = "http://localhost:8080/day23_00_bookstore/servlet/PaymentResponse";
        String p9_SAF = "1";
        String pa_MP = "";
        String pr_NeedResponse = "1";
        String hmac = PaymentUtil.buildHmac(p0_Cmd, p1_MerId, p2_Order, p3_Amt, p4_Cur, p5_Pid, p6_Pcat, p7_Pdesc, p8_Url, p9_SAF, pa_MP, pd_FrpId, pr_NeedResponse, "69cl522AV6q613Ii4W6u8K6XuW8vM1N6bFgyv769220IuYe9u37N4y7rI4Pl");
        request.setAttribute("p0_Cmd",p0_Cmd );
        request.setAttribute("p1_MerId",p1_MerId );
        request.setAttribute("p2_Order",p2_Order );
        request.setAttribute("p3_Amt",p3_Amt );
        request.setAttribute("p4_Cur",p4_Cur );
        request.setAttribute("p5_Pid",p5_Pid );
        request.setAttribute("p6_Pcat",p6_Pcat );
        request.setAttribute("p7_Pdesc",p7_Pdesc );
        request.setAttribute("p8_Url",p8_Url );
        request.setAttribute("p9_SAF",p9_SAF );
        request.setAttribute("pa_MP",pa_MP );
        request.setAttribute("pd_FrpId",pd_FrpId );
        request.setAttribute("pr_NeedResponse",pr_NeedResponse );
        request.setAttribute("hmac",hmac );
        request.getRequestDispatcher("/sure.jsp").forward(request, response);
    }
    //转向支付页面
    private void payUI(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
        String ordersnum = request.getParameter("ordersnum");
        Orders o = s.findOrdersByNum(ordersnum);
        request.setAttribute("o", o);
        request.getRequestDispatcher("/pay.jsp").forward(request, response);
    }
    //生成订单，然后转向选择银行页面
    private void genOrders(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException{
        //判断用户是否登录
        HttpSession session = request.getSession();
        Customer c = (Customer) session.getAttribute("customer");
        if(c==null){
            response.getWriter().write("<script type='text/javascript'>alert('请先登录')</script>");
            response.setHeader("Refresh", "0;URL="+request.getContextPath()+"/login.jsp");
            return;
        }
        //把购物车---->订单
        Cart cart = (Cart)session.getAttribute("cart");
        Orders os = new Orders();
        String ordersnum = System.nanoTime()+"";
        os.setOrdersnum(ordersnum);
        os.setMoney(cart.getTotalMoney());
        os.setNum(cart.getTotalNum());
        os.setCustomer(c);
        //把购物项---->订单项
        Map<String, CartItem> items = cart.getItems();
        for(Map.Entry<String, CartItem> me:items.entrySet()){
            OrdersItem oitem = new OrdersItem();
            oitem.setId(UUID.randomUUID().toString());
            oitem.setNum(me.getValue().getNum());
            oitem.setMoney(me.getValue().getPrice());
            oitem.setBook(me.getValue().getBook());
            os.getItems().add(oitem);
        }
        //生成订单
        s.saveOrders(os);
        //转向付款页面：把订单号传过去
        response.sendRedirect(request.getContextPath()+"/servlet/ControllerServlet?op=payUI&ordersnum="+ordersnum);
    }

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

}

 响应

import java.io.IOException;

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

import com.itheima.domain.Orders;
import com.itheima.service.BusinessService;
import com.itheima.service.impl.BusinessServiceImpl;
import com.itheima.util.PaymentUtil;
//接受支付结果的处理
public class PaymentResponse extends HttpServlet {
    private BusinessService s = new BusinessServiceImpl();
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String p1_MerId = request.getParameter("p1_MerId");
        String r0_Cmd= request.getParameter("r0_Cmd");
        String r1_Code= request.getParameter("r1_Code");//1代表成功
        String r2_TrxId= request.getParameter("r2_TrxId");
        String r3_Amt= request.getParameter("r3_Amt");
        String r4_Cur= request.getParameter("r4_Cur");
        String r5_Pid= request.getParameter("r5_Pid");
        String r6_Order= request.getParameter("r6_Order");//订单号
        String r7_Uid= request.getParameter("r7_Uid");
        String r8_MP= request.getParameter("r8_MP");
        String r9_BType= request.getParameter("r9_BType");//为“1”: 浏览器重定向;为“2”: 服务器点对点通讯.
        String hmac= request.getParameter("hmac");
        //验证信息的正确性
        boolean b = PaymentUtil.verifyCallback(hmac, p1_MerId, r0_Cmd, r1_Code, r2_TrxId, r3_Amt, r4_Cur, r5_Pid, r6_Order, r7_Uid, r8_MP, r9_BType, "69cl522AV6q613Ii4W6u8K6XuW8vM1N6bFgyv769220IuYe9u37N4y7rI4Pl");
        if(b){
            if("1".equals(r1_Code)){
                //支付成功
                if("2".equals(r9_BType)){
                    response.getWriter().write("success");
                }
                //更改订单的状态
                Orders o = s.findOrdersByNum(r6_Order);
                if(o==null){
                    response.getWriter().write("没有改订单");
                    return;
                }
                o.setStatus(1);
                s.updateOrders(o);
                response.getWriter().write("<script type='text/javascript'>alert('支付成功')</script>");
                response.setHeader("Refresh", "0;URL="+request.getContextPath());
            }else{
                response.getWriter().write("支付失败！请与网站联系");
            }
        }else{
            response.getWriter().write("返回的信息有误,请与网站联系");
        }
    }

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

}

 视图层 

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>在线支付</title>
    
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->

  </head>
  
  <body>
    <form action="${pageContext.request.contextPath}/servlet/ControllerServlet?op=pay" method="post">
        <table width="60%">
            <tr>  
                <td bgcolor="#F7FEFF" colspan="4">
                     订单号：<INPUT TYPE="text" NAME="ordersnum" value="${o.ordersnum}" readonly="readonly"> 
                     支付金额：<INPUT TYPE="text" NAME="money" size="6" value="0.01" readonly="readonly">元
                 </td>
            </tr>
            <tr><td><br/></td></tr>
            <tr>
                <td>请您选择在线支付银行</td>
            </tr>
            <tr>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBCHINA-NET">招商银行 </td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="ICBC-NET">工商银行</td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="ABC-NET">农业银行</td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="CCB-NET">建设银行 </td>
            </tr>
            <tr>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBC-NET">中国民生银行总行</td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="CEB-NET" >光大银行 </td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="BOCO-NET">交通银行</td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="SDB-NET">深圳发展银行</td>
            </tr>
            <tr>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="BCCB-NET">北京银行</td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="CIB-NET">兴业银行 </td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="SPDB-NET">上海浦东发展银行 </td>
              <td><INPUT TYPE="radio" NAME="pd_FrpId" value="ECITIC-NET">中信银行</td>
            </tr>
            <tr><td><br/></td></tr>
            <tr>
              <td><INPUT TYPE="submit" value="确定支付"></td>
            </tr>
         </table>
        
    </form>
  </body>
</html>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>title</title>
    
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->

  </head>
  
  <body>
    <form id="f1" action="https://www.yeepay.com/app-merchant-proxy/node" method="post">
        <input type="hidden" name="p0_Cmd" value="${p0_Cmd}"/>
        <input type="hidden" name="p1_MerId" value="${p1_MerId}"/>
        <input type="hidden" name="p2_Order" value="${p2_Order}"/>
        <input type="hidden" name="p3_Amt" value="${p3_Amt}"/>
        <input type="hidden" name="p4_Cur" value="${p4_Cur}"/>
        <input type="hidden" name="p5_Pid" value="${p5_Pid}"/>
        <input type="hidden" name="p6_Pcat" value="${p6_Pcat}"/>
        <input type="hidden" name="p7_Pdesc" value="${p7_Pdesc}"/>
        <input type="hidden" name="p8_Url" value="${p8_Url}"/>
        <input type="hidden" name="p9_SAF" value="${p9_SAF}"/>
        <input type="hidden" name="pa_MP" value="${pa_MP}"/>
        <input type="hidden" name="pd_FrpId" value="${pd_FrpId}"/>
        <input type="hidden" name="pr_NeedResponse" value="${pr_NeedResponse}"/>
        <input type="hidden" name="hmac" value="${hmac}"/>
    </form>
    <script type="text/javascript">
        window.onload=function(){
            document.getElementById("f1").submit();
        }
    </script>
  </body>
</html>

 订单的查询和修改

控制层

public class ControllerServlet extends HttpServlet {
    private BusinessService s = new BusinessServiceImpl();
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String op = request.getParameter("op");
        if("showMyOrders".equals(op)){
            showMyOrders(request,response);
        }
    }
    //查看用户自己的订单
    private void showMyOrders(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException{
        HttpSession session = request.getSession();
        Customer c = (Customer) session.getAttribute("customer");
        if(c==null){
            response.getWriter().write("<script type='text/javascript'>alert('请先登录')</script>");
            response.setHeader("Refresh", "0;URL="+request.getContextPath()+"/login.jsp");
            return;
        }
        List<Orders> os = s.findOrdersByCustomer(c.getId());
        request.setAttribute("os", os);
        request.getRequestDispatcher("/showOrders.jsp").forward(request, response);
    }
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

}

 

视图层

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/top.jsp"%>
    <c:if test="${empty os}">
        您还没有下过单    
    </c:if>
    <c:if test="${!empty os }">
        <h3>一个月的订单如下</h3>
        <table border="1" width="438">
            <tr>
                <th>订单号</th>
                <th>金额</th>
                <th>状态</th>
                <th>操作</th>
            </tr>
            <c:forEach items="${os}" var="o" varStatus="vs">
                <tr class="${vs.index%2==0?'odd':'even'}">
                    <td>${o.ordersnum}</td>
                    <td>${o.money}</td>
                    <td>
                        <c:choose>
                            <c:when test="${o.status==0}">
                                未付款<a href="${pageContext.request.contextPath}/servlet/ControllerServlet?op=payUI&ordersnum=${o.ordersnum}">付款</a>
                            </c:when>
                            <c:when test="${o.status==1}">
                                已付款
                            </c:when>
                            <c:otherwise>
                                已发货
                            </c:otherwise>
                        </c:choose>
                    </td>
                    <td>
                        <a href="">详细</a>
                    </td>
                </tr>
            </c:forEach>
        </table>
    </c:if>
   
  </body>
</html>