package com.itheima.store.web.servlet;

import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

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

import com.itheima.store.domain.Order;
import com.itheima.store.domain.OrderItem;
import com.itheima.store.domain.PageBean;
import com.itheima.store.domain.Product;
import com.itheima.store.domain.User;
import com.itheima.store.service.OrderService;
import com.itheima.store.service.impl.OrderServiceImpl;
 
import com.itheima.store.utils.PaymentUtil;
import com.itheima.store.utils.UUIDUtils;

/**
 * Servlet
 */
public class OrderServlet extends BaseServlet {
    private static final long serialVersionUID = 1L;

    
    // 支付訂單
    public String payByOid(HttpServletRequest request, HttpServletResponse response)
            
 
throws ServletException, IOException {

        try {
            String oid = request.getParameter("oid");
            String address = request.getParameter("address");
            String name = request.getParameter("name");
            String tel = request.getParameter("tel");
            String pd_FrpId = request.getParameter("pd_FrpId");

            OrderService service = new OrderServiceImpl();
            service.updateOrder(oid, address, name, tel);

            // 支付的邏輯
            // 執行支付操作
            String p0_Cmd = "Buy";
            String p1_MerId = "10001126856";// 商戶id
            String p2_Order = oid;// 訂單編號
            String p3_Amt = "0.01";// 支付金額
            String p4_Cur = "CNY";
            String p5_Pid = "";
            String p6_Pcat = "";
            String p7_Pdesc = "";
            // 支付成功後,當用戶點擊返回商家時跳轉的頁面
            String p8_Url = "http://localhost:8080/Store/order?action=callback";
            String p9_SAF = "";
            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);

            return "/jsp/confirm.jsp";

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    // 支付成功以後的回調方法
    public String callback(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 更改狀態。
        String p1_MerId = request.getParameter("p1_MerId");
        String r0_Cmd = request.getParameter("r0_Cmd");
        String r1_Code = request.getParameter("r1_Code");// 支付結果1
        String r2_TrxId = request.getParameter("r2_TrxId");
        String r3_Amt = request.getParameter("r3_Amt");
        String r4_Cur = "RMB";
        String r5_Pid = request.getParameter("r5_Pid");
        String r6_Order = request.getParameter("r6_Order");// 用戶生成的定單號
        String r7_Uid = request.getParameter("r7_Uid");
        String r8_MP = request.getParameter("r8_MP");
        String r9_BType = request.getParameter("r9_BType");// 交易結果返回類型 1
        String rb_BankId = request.getParameter("rb_BankId");
        String hmac = request.getParameter("hmac");

        // 驗證數據的安全
        boolean isVerifyCallback = 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");

        // 支付成功
        if (isVerifyCallback && "1".equals(r1_Code)) {

            try {
                // 修改訂單狀態
                OrderService service = new OrderServiceImpl();
                service.updateOrderState(r6_Order, 1);

                request.setAttribute("error", "親，您的訂單" + r6_Order + "已經付款，付款的金額是：" + r3_Amt);
                return "/jsp/error.jsp";
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

        return null;
    }

}

PaymentUtil

package cn.itcast.utils;

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 業務類型
     * @param p1_MerId 商戶編號
     * @param p2_Order 商戶訂單號
     * @param p3_Amt 支付金額
     * @param p4_Cur 交易幣種
     * @param p5_Pid 商品名稱
     * @param p6_Pcat 商品種類
     * @param p7_Pdesc 商品描述
     * @param p8_Url 商戶接收支付成功數據的地址
     * @param p9_SAF 送貨地址
     * @param pa_MP 商戶擴展信息
     * @param pd_FrpId 銀行編碼
     * @param pr_NeedResponse 應答機制
     * @param keyValue 商戶密鑰
     * @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();
        // 業務類型
        sValue.append(p0_Cmd);
        // 商戶編號
        sValue.append(p1_MerId);
        // 商戶訂單號
        sValue.append(p2_Order);
        // 支付金額
        sValue.append(p3_Amt);
        // 交易幣種
        sValue.append(p4_Cur);
        // 商品名稱
        sValue.append(p5_Pid);
        // 商品種類
        sValue.append(p6_Pcat);
        // 商品描述
        sValue.append(p7_Pdesc);
        // 商戶接收支付成功數據的地址
        sValue.append(p8_Url);
        // 送貨地址
        sValue.append(p9_SAF);
        // 商戶擴展信息
        sValue.append(pa_MP);
        // 銀行編碼
        sValue.append(pd_FrpId);
        // 應答機制
        sValue.append(pr_NeedResponse);
        
        return PaymentUtil.hmacSign(sValue.toString(), keyValue);
    }
    
    /**
     * 返回校驗hmac方法
     * 
     * @param hmac 支付網關發來的加密驗證碼
     * @param p1_MerId 商戶編號
     * @param r0_Cmd 業務類型
     * @param r1_Code 支付結果
     * @param r2_TrxId 易寶支付交易流水號
     * @param r3_Amt 支付金額
     * @param r4_Cur 交易幣種
     * @param r5_Pid 商品名稱
     * @param r6_Order 商戶訂單號
     * @param r7_Uid 易寶支付會員ID
     * @param r8_MP 商戶擴展信息
     * @param r9_BType 交易結果返回類型
     * @param keyValue 密鑰
     * @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();
        // 商戶編號
        sValue.append(p1_MerId);
        // 業務類型
        sValue.append(r0_Cmd);
        // 支付結果
        sValue.append(r1_Code);
        // 易寶支付交易流水號
        sValue.append(r2_TrxId);
        // 支付金額
        sValue.append(r3_Amt);
        // 交易幣種
        sValue.append(r4_Cur);
        // 商品名稱
        sValue.append(r5_Pid);
        // 商戶訂單號
        sValue.append(r6_Order);
        // 易寶支付會員ID
        sValue.append(r7_Uid);
        // 商戶擴展信息
        sValue.append(r8_MP);
        // 交易結果返回類型
        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榪?4564868265473632445648682654736324511","8UPp0KE8sq73zVP370vko7C39403rtK1YwX40Td6irH216036H27Eb12792t"));
//    }
}

confirm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
    <!-- 確認支付form -->
    <form action="https://www.yeepay.com/app-merchant-proxy/node"
        method="post">
        <h3>訂單號：${p2_Order},付款金額 ：${p3_Amt }</h3>
        <input type="hidden" name="pd_FrpId" value="${pd_FrpId }" /> <input
            type="hidden" name="p0_Cmd" value="${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="pr_NeedResponse" value="${pr_NeedResponse }" /> <input
            type="hidden" name="hmac" value="${hmac }" /> <input type="submit"
            value="確認支付" />
    </form>
</body>
</html>

易寶支付