最近做了公众号的微信支付，想起来之前的第三方易宝支付，重新实现理解了一下。无论是微信，还是易宝。整个支付过程都是设置一些参数，然后提交给支付网关，最后返回数据，针对业务进行操作。
商户公司直接与银行对接和通过中间公司与银行对接
直接银行对接
中间公司对接
规范：
通过http向易宝支付网关发送请求，请求可以是get和post，页面采用GBK
易宝支付网关对对企业发来的数据，使用用户的密钥生成MD5-hmac码，然后跟企业发来的MD5-hmac码对比，相同则把请求转发给银行网关，用户支付完成后，银行网关引导用户重定向到易宝支付网关，易宝支付网关再引导用户重定向到企业制定的URL
使用intellij idea对代码实现
1.首先创建一个java Web工程
2.完整的站点地图
1.web.xml，引导进入index.jsp
2.表单提交，action=${pageContext.request.contextPath}/servlet/yeepay/paymentRequest
3.web.xml中配置的Servlet，进入com.dynamic.servlet.PaymentRequest
4.配置参数，转发到connection.jsp中
5.向易宝网关提交请求，请求中包括企业回调业务地址，请求完成后回调 http://localhost:5050/servlet/yeepay/response
6.web.xml中配置的Servlet，进入com.dynamic.servlet.PaymentResutlResponse
7.校验MD5-hmac,成功，执行企业业务代码，数据保存到数据库中
4.代码实现
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<description>发起支付请求</description>
<display-name>发起支付请求</display-name>
<servlet-name>PaymentRequest</servlet-name>
<servlet-class>com.dynamic.servlet.PaymentRequest</servlet-class>
</servlet>
<servlet>
<description>响应支付结果请求</description>
<display-name>响应支付结果请求</display-name>
<servlet-name>PaymentResutlResponse</servlet-name>
<servlet-class>com.dynamic.servlet.PaymentResutlResponse</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>PaymentRequest</servlet-name>
<url-pattern>/servlet/yeepay/paymentRequest</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>PaymentResutlResponse</servlet-name>
<url-pattern>/servlet/yeepay/response</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
merchantInfo.properties,属性文件，指定参数
p1_MerId=10001126856 #商家ID
keyValue=69cl522AV6q613Ii4W6u8K6XuW8vM1N6bFgyv769220IuYe9u37N4y7rI4Pl #商户密钥
merchantCallbackURL=http://localhost:5050/servlet/yeepay/response #商户接收支付成功数据的地址
configInfo，读取属性文件
package com.dynamic.util;
import java.util.Properties;
/**
* Created by fxq on 2017/5/12.
*/
public class ConfigInfo {
private static Properties cache = new Properties();
static {
try {
cache.load(ConfigInfo.class.getClassLoader().getResourceAsStream("merchantInfo.properties"));
}catch (Exception e)
{
e.printStackTrace();
}
}
public static String getValue(String key)
{
return cache.getProperty(key);
}
}
DigestUtil,加密工具类
package com.dynamic.util;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
/**
* Created by fxq on 2017/5/12.
*/
public class DigestUtil {
private static String encodingCharset = "UTF-8";
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();
}
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));
}
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"));
}*/
}
PaymentUtil,生成hmac和校验hmac
package com.dynamic.util;
/**
* Created by fxq on 2017/5/12.
*/
public class PaymentUtil {
/**
* 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)
{
StringBuffer sValue = new StringBuffer();
//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);
//商品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);
String sNewString = DigestUtil.hmacSign(sValue.toString(),keyValue);
return sNewString;
}
/**
* 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)
{
StringBuffer sValue = new StringBuffer();
//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 = DigestUtil.hmacSign(sValue.toString(),keyValue);
if(hmac.equals(sNewString))
{
return true;
}
return false;
}
}
两个Servlet
PaymentRequest
package com.dynamic.servlet;
import com.dynamic.util.ConfigInfo;
import com.dynamic.util.PaymentUtil;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* Created by fxq on 2017/5/12.
*/
public class PaymentRequest extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("GBK");
String orderid = request.getParameter("orderid");//订单号
String amount = request.getParameter("amount");//支付金额
String pd_FrpId = request.getParameter("pd_FrpId");//选择的支付银行
String p1_MerId = ConfigInfo.getValue("p1_MerId");
String keyValue = ConfigInfo.getValue("keyValue");
String merchantCallbackURL = ConfigInfo.getValue("merchantCallbackURL");
String messageType = "Buy"; // 请求命令,在线支付固定为Buy
String currency = "CNY"; // 货币单位
String productDesc = ""; // 商品描述
String productCat = ""; // 商品种类
String productId = ""; // 商品ID
String addressFlag = "0"; // 需要填写送货信息 0：不需要 1:需要
String sMctProperties = ""; // 商家扩展信息
String pr_NeedResponse = "0"; // 应答机制
String md5hmac = PaymentUtil.buildHmac(messageType, p1_MerId, orderid, amount, currency,
productId, productCat, productDesc, merchantCallbackURL, addressFlag, sMctProperties,
pd_FrpId, pr_NeedResponse, keyValue);
request.setAttribute("messageType", messageType);
request.setAttribute("merchantID", p1_MerId);
request.setAttribute("orderId", orderid);
request.setAttribute("amount", amount);
request.setAttribute("currency", currency);
request.setAttribute("productId", productId);
request.setAttribute("productCat", productCat);
request.setAttribute("productDesc", productDesc);
request.setAttribute("merchantCallbackURL", merchantCallbackURL);
request.setAttribute("addressFlag", addressFlag);
request.setAttribute("sMctProperties", sMctProperties);
request.setAttribute("frpId", pd_FrpId);
request.setAttribute("pr_NeedResponse", pr_NeedResponse);
request.setAttribute("hmac", md5hmac);
request.getRequestDispatcher("/WEB-INF/page/connection.jsp").forward(request, response);
}
}
PaymentResutlResponse
package com.dynamic.servlet;
import com.dynamic.util.ConfigInfo;
import com.dynamic.util.PaymentUtil;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* Created by fxq on 2017/5/12.
*/
public class PaymentResutlResponse extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("GBK");
String merchantID = ConfigInfo.getValue("p1_MerId");//商家ID
String keyValue = ConfigInfo.getValue("keyValue");//商家密钥
String sCmd = request.getParameter("r0_Cmd");//业务类型
String sResultCode = request.getParameter("r1_Code");//扣款结果 ，1表示扣款成功
String sTrxId = request.getParameter("r2_TrxId");//YeePay易宝交易订单号
String amount = request.getParameter("r3_Amt");//扣款金额，交易结束后，YeePay易宝交易系统将实际扣费金额返回给商户
String currency = request.getParameter("r4_Cur");//交易币种，人民币为CNY;
String productId = request.getParameter("r5_Pid");//商品ID
String orderId = request.getParameter("r6_Order");//商户订单号
String userId = request.getParameter("r7_Uid");//YeePay易宝会员ID
String mp = request.getParameter("r8_MP");//商户扩展信息，可以任意填写1K的字符串，交易返回时将原样返回
String bType = request.getParameter("r9_BType");//交易结果通知类型 1：交易成功回调（浏览器重定向） 2:交易成功主动通知（服务器点对点通讯）
String rb_BankId = request.getParameter("rb_BankId");//支付银行
String rb_PayDate = request.getParameter("rp_PayDate");//在银行支付时的时间
String hmac = request.getParameter("hmac");//MD5交易签名
System.out.println("交易签名---->" + hmac);
boolean result = PaymentUtil.verifyCallback(hmac,merchantID,sCmd,sResultCode,sTrxId,amount,currency,productId,orderId,userId,mp,bType,keyValue);
if(result)
{
if("1".equals(sResultCode))
{
//把数据库中用户的订单支付状态设置为已完成支付
String message = "订单号:" + orderId + "的订单支付成功了";
message += ",用户支付了" + amount + "元";
message += ",交易结果通知类型：";
if("1".equals(bType))
{
message += "浏览器重定向";
}else if("2".equals(bType))
{
message += "易宝支付网关后台程序通知";
}
message +=",易宝订单系统中的订单号：" +sTrxId;
request.setAttribute("message",message);
}else
{
request.setAttribute("message","用户支付失败");
}
}else
{
request.setAttribute("message","数据来源不合法");
}
request.getRequestDispatcher("/WEB-INF/page/paymentResult.jsp").forward(request,response);
}
}
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>支付第一步,选择支付银行</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body>
<table width="960" border="0" align="center">
<tr>
<td width="536" valign="top">
<form action="${pageContext.request.contextPath}/servlet/yeepay/paymentRequest" method="post" name="paymentform">
<table width="100%" border="0">
<tr>
<td height="30" colspan="4"><table width="100%" height="50" border="0" cellpadding="0" cellspacing="1" bgcolor="#A2E0FF">
<tr>
<td align="center" bgcolor="#F7FEFF"><h3>订单号：<INPUT TYPE="text" NAME="orderid"> 应付金额：￥<INPUT TYPE="text" NAME="amount" size="6">元</h3></td>
</tr>
</table></td>
</tr>
<tr>
<td colspan="4"> </td>
</tr>
<tr>
<td height="30" colspan="4" bgcolor="#F4F8FF"><span class="STYLE3">请您选择在线支付银行</span> </td>
</tr>
<tr>
<td width="26%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBCHINA-NET">招商银行 </td>
<td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ICBC-NET">工商银行</td>
<td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ABC-NET">农业银行</td>
<td width="24%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CCB-NET">建设银行 </td>
</tr>
<tr>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBC-NET">中国民生银行总行</td>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CEB-NET" >光大银行 </td>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BOCO-NET">交通银行</td>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="SDB-NET">深圳发展银行</td>
</tr>
<tr>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BCCB-NET">北京银行</td>
<td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CIB-NET">兴业银行 </td>
<td height="25"><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 colspan="4"> </td>
</tr>
<tr>
<td colspan="4" align="center"><input type="submit" value=" 确认支付 " /></td>
</tr>
</table>
</form> </td>
<td colspan="2" valign="top"><div class="divts"><table width="400" border="0" align="center" cellpadding="5" cellspacing="0">
<tr>
<td bgcolor="#F4F8FF"><span class="STYLE5"> 温馨提示</span></td>
</tr>
<tr>
<td><ul><li> 建行客户需到柜面签约网上银行才能支付</li>
<li>请关闭弹出窗口拦截功能</li>
<li>务必使用IE5.0以上浏览器</li>
<li>支付出错时勿按IE“后退”键</li>
</ul></td>
</tr>
</table>
</div>
<div id="blankmessage"></div> </td>
</tr>
<tr>
<td> </td>
<td width="290"> </td>
<td width="120"> </td>
</tr>
</table>
</body>
</html>
connection.jsp
<%@ page language="java" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>发起支付请求</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body >
<!-- http://tech.yeepay.com:8080/robot/debug.action
https://www.yeepay.com/app-merchant-proxy/node
οnlοad="javascript:document.forms[0].submit()"-->
<form name="yeepay" action="https://www.yeepay.com/app-merchant-proxy/node" method='post'>
<input type='hidden' name='p0_Cmd' value="${messageType}"> <!-- 请求命令,在线支付固定为Buy -->
<input type='hidden' name='p1_MerId' value="${merchantID}"> <!-- 商家ID -->
<input type="hidden" name="p2_Order" value="${orderId}"> <!-- 商家的交易定单号 -->
<input type='hidden' name='p3_Amt' value="${amount}"> <!-- 订单金额 -->
<input type='hidden' name='p4_Cur' value="${currency}"> <!-- 货币单位 -->
<input type='hidden' name='p5_Pid' value="${productId}"> <!-- 商品ID -->
<input type='hidden' name='p6_Pcat' value="${productCat}"> <!-- 商品种类 -->
<input type='hidden' name='p7_Pdesc' value="${productDesc}"> <!-- 商品描述 -->
<input type='hidden' name='p8_Url' value="${merchantCallbackURL}"> <!-- 交易结果通知地址 -->
<input type='hidden' name='p9_SAF' value="${addressFlag}"> <!-- 需要填写送货信息 0：不需要 1:需要 -->
<input type='hidden' name='pa_MP' value="${sMctProperties}"> <!-- 商家扩展信息 -->
<input type='hidden' name='pd_FrpId' value="${frpId}"> <!-- 银行ID -->
<!-- 应答机制 为“1”: 需要应答机制;为“0”: 不需要应答机制 -->
<input type="hidden" name="pr_NeedResponse" value="0">
<input type='hidden' name='hmac' value="${hmac}"><!-- MD5-hmac验证码 -->
<input type="submit" value="发送">
</form>
</body>
</html>
paymentResult.jsp
<%@ page language="java" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>支付结果</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body >
<center><h3><font color="red">
${message }
</font></h3></center>
</body>
</html>
系统为Servlet项目，实现了向易宝发起支付，并支付成功回调企业业务。
git源代码下载
稍后更新，，，
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
