在线支付的步骤：
1.index.jsp：是个表单界面，有你要支付的订单号和支付金额，并叫你选择银行开始支付行为。点击“确认支付”后跳转至PaymentRequest
<%@ 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>
<form action="PaymentRequest" method="post" name="paymentform">
订单号：<INPUT TYPE="text" NAME="orderid"> 应付金额：￥<INPUT TYPE="text" NAME="amount" size="6">元 <br>
请您选择在线支付银行 <br>
<input TYPE="radio" NAME="pd_FrpId" value="CMBCHINA-NET">招商银行 <br>
<input TYPE="radio" NAME="pd_FrpId" value="ICBC-NET">工商银行 <br>
<input TYPE="radio" NAME="pd_FrpId" value="ABC-NET">农业银行 <br>
<input TYPE="radio" NAME="pd_FrpId" value="CCB-NET">建设银行 <br>
<input type="submit" value=" 确认支付 " />
</form>
</body>
</html>
2.PaymentRequestl：从index.jsp表单界面获取数据，再将其设置为request的属性，最后跳转至connection.jsp页面。
package wang.payment.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import wang.payment.utils.ConfigInfo;
import wang.payment.utils.PaymentUtil;
/**
* Servlet implementation class PaymentRequest
*/
public class PaymentRequest extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public PaymentRequest() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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("connection.jsp").forward(request, response);
}
}
3.connection.jsp：向银行发起支付请求。从request属性通过EL表达式获取数据，然后通过隐藏表单发给易宝网。
<%@ 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 onload="javascript:document.forms[0].submit()">
<!-- http://tech.yeepay.com:8080/robot/debug.action -->
<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 -->
</form>
</body>
</html>
4.银行完成支付之后，会给用户返回一些订单处理信息。这时我们要获取这些信息，并判断支付是否成功，若成功，则显示成功页面。
package cn.itcast.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.itcast.utils.ConfigInfo;
import cn.itcast.utils.PanymentUtil;
/**
* 响应银行支付结果请求
* @author 传智播客
*
*/
public class PaymentResutlResponse extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public 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,该字段值为1时表示扣款成功.
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款金额返回给商户
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 rp_PayDate = request.getParameter("rp_PayDate");//在银行支付时的时间
String hmac = request.getParameter("hmac");//MD5交易签名
boolean result = PanymentUtil.verifyCallback(hmac, merchantID, sCmd, sResultCode, sTrxId, amount,
currency, productId, orderId, userId, mp, bType, keyValue);
if(result){
if("1".equals(sResultCode)){
//你们这个地方应该把数据库中订单的支付状态设置成已经支付.
String message = "订单号为:"+ 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为:"+ 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);
}
}
注：省略了对数据加密的类和读取配置文件的类（ConfigInfo）。