java网上图书商城（9）支付模块

本文实例为大家分享了java网上商城支付模块的具体代码，供大家参考，具体内容如下

1.支付准备

public String paymentPre(HttpServletRequest req, HttpServletResponse resp)
  throws ServletException, IOException {
 req.setAttribute("order", orderService.load(req.getParameter("oid")));
 return "f:/jsps/order/pay.jsp";
}

 2.支付方法

public String payment(HttpServletRequest req, HttpServletResponse resp)
  throws ServletException, IOException {
 Properties props = new Properties();
 props.load(this.getClass().getClassLoader().getResourceAsStream("payment.properties"));
 
 String p0_Cmd = "Buy";//业务类型，固定值Buy
 String p1_MerId = props.getProperty("p1_MerId");//商号编码，在易宝的唯一标识
 String p2_Order = req.getParameter("oid");//订单编码
 String p3_Amt = "0.01";//支付金额
 String p4_Cur = "CNY";//交易币种，固定值CNY
 String p5_Pid = "";//商品名称
 String p6_Pcat = "";//商品种类
 String p7_Pdesc = "";//商品描述
 String p8_Url = props.getProperty("p8_Url");//在支付成功后，易宝会访问这个地址。
 String p9_SAF = "";//送货地址
 String pa_MP = "";//扩展信息
 String pd_FrpId = req.getParameter("yh");//支付通道
 String pr_NeedResponse = "1";//应答机制，固定值1
  
 
 String keyValue = props.getProperty("keyValue");
 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, keyValue);
  
 
 StringBuilder sb = new StringBuilder("https://www.yeepay.com/app-merchant-proxy/node");
 sb.append("?").append("p0_Cmd=").append(p0_Cmd);
 sb.append("&").append("p1_MerId=").append(p1_MerId);
 sb.append("&").append("p2_Order=").append(p2_Order);
 sb.append("&").append("p3_Amt=").append(p3_Amt);
 sb.append("&").append("p4_Cur=").append(p4_Cur);
 sb.append("&").append("p5_Pid=").append(p5_Pid);
 sb.append("&").append("p6_Pcat=").append(p6_Pcat);
 sb.append("&").append("p7_Pdesc=").append(p7_Pdesc);
 sb.append("&").append("p8_Url=").append(p8_Url);
 sb.append("&").append("p9_SAF=").append(p9_SAF);
 sb.append("&").append("pa_MP=").append(pa_MP);
 sb.append("&").append("pd_FrpId=").append(pd_FrpId);
 sb.append("&").append("pr_NeedResponse=").append(pr_NeedResponse);
 sb.append("&").append("hmac=").append(hmac);
  
 resp.sendRedirect(sb.toString());
 return null;
}
 

3.回馈方法

当支付成功时，易宝会访问这里
用两种方法访问：
1. 引导用户的浏览器重定向(如果用户关闭了浏览器，就不能访问这里了)
2. 易宝的服务器会使用点对点通讯的方法访问这个方法。（必须回馈success，不然易宝服务器会一直调用这个方法）

public String back(HttpServletRequest req, HttpServletResponse resp)
  throws ServletException, IOException {
 
 String p1_MerId = req.getParameter("p1_MerId");
 String r0_Cmd = req.getParameter("r0_Cmd");
 String r1_Code = req.getParameter("r1_Code");
 String r2_TrxId = req.getParameter("r2_TrxId");
 String r3_Amt = req.getParameter("r3_Amt");
 String r4_Cur = req.getParameter("r4_Cur");
 String r5_Pid = req.getParameter("r5_Pid");
 String r6_Order = req.getParameter("r6_Order");
 String r7_Uid = req.getParameter("r7_Uid");
 String r8_MP = req.getParameter("r8_MP");
 String r9_BType = req.getParameter("r9_BType");
 String hmac = req.getParameter("hmac");
 
 Properties props = new Properties();
 props.load(this.getClass().getClassLoader().getResourceAsStream("payment.properties"));
 String keyValue = props.getProperty("keyValue");
 
 boolean bool = 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,
   keyValue);
 if(!bool) {
  req.setAttribute("code", "error");
  req.setAttribute("msg", "无效的签名，支付失败！（你不是好人）");
  return "f:/jsps/msg.jsp";
 }
 if(r1_Code.equals("1")) {
  orderService.updateStatus(r6_Order, 2);
  if(r9_BType.equals("1")) {
   req.setAttribute("code", "success");
   req.setAttribute("msg", "恭喜，支付成功！");
   return "f:/jsps/msg.jsp";    
  } else if(r9_BType.equals("2")) {
   resp.getWriter().print("success");
  }
 }
 return null;
}

4.pay.jsp

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


 
 
  
 
 
  
 
 
 
 
 
 

 
 
 

 支付金额：¥${order.total }
 编号：${order.oid }


 

payment.properties

p1_MerId=10001126856
keyValue=69cl522AV6q613Ii4W6u8K6XuW8vM1N6bFgyv769220IuYe9u37N4y7rI4Pl
p8_Url=http://localhost:8080/goods/OrderServlet?method=back

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。