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"));
 /*
  * 1. 准备13个参数
  */
 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
  
 /*
  * 2. 计算hmac
  * 需要13个参数
  * 需要keyvalue
  * 需要加密算法
  */
 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);
  
 /*
  * 3. 重定向到易宝的支付网关
  */
 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 {
 /*
  * 1. 获取12个参数
  */
 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");
 /*
  * 2. 获取keyvalue
  */
 properties props = new properties();
 props.load(this.getclass().getclassloader().getresourceasstream("payment.properties"));
 string keyvalue = props.getproperty("keyvalue");
 /*
  * 3. 调用paymentutil的校验方法来校验调用者的身份
  * >如果校验失败：保存错误信息，转发到msg.jsp
  * >如果校验通过：
  *  * 判断访问的方法是重定向还是点对点，如果要是重定向
  *  修改订单状态，保存成功信息，转发到msg.jsp
  *  * 如果是点对点：修改订单状态，返回success
  */
 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" %>
 
 
<!doctype html public "-//w3c//dtd html 4.01 transitional//en">
<html>
 <head>
 <title>pay.jsp</title>
  
 <meta http-equiv="pragma" content="no-cache">
 <meta http-equiv="cache-control" content="no-cache">
 <meta http-equiv="expires" content="0"> 
 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
 <meta http-equiv="description" content="this is my page">
 <!--
 <link rel="stylesheet" type="text/css" href="styles.css">
 -->
 <link rel="stylesheet" type="text/css" href="<c:url value='/jsps/css/order/pay.css'/>">
 <script type="text/javascript" src="<c:url value='/jquery/jquery-1.5.1.js'/>"></script>
 
<script type="text/javascript">
$(function() {
 $("img").click(function() {
  $("#" + $(this).attr("name")).attr("checked", true);
 });
});
</script>
 </head>
 
 <body>
<div class="divcontent">
 <span class="spanprice">支付金额：</span><span class="price_t">¥${order.total }</span>
 <span class="spanoid">编号：${order.oid }</span>
</div>
<form action="<c:url value='/orderservlet'/>" method="post" id="form1" target="_top">
<input type="hidden" name="method" value="payment"/>
<input type="hidden" name="oid" value="${order.oid }"/>
<div class="divbank">
 <div class="divtext">选择网上银行</div>
 <div style="margin-left: 20px;">
  <div style="margin-bottom: 20px;">
  <input id="icbc-net-b2c" type="radio" name="yh" value="icbc-net-b2c" checked="checked"/>
  <img name="icbc-net-b2c" align="middle" src="<c:url value='/bank_img/icbc.bmp'/>"/>
   
  <input id="cmbchina-net-b2c" type="radio" name="yh" value="cmbchina-net-b2c"/>
  <img name="cmbchina-net-b2c" align="middle" src="<c:url value='/bank_img/cmb.bmp'/>"/>
 
  <input id="abc-net-b2c" type="radio" name="yh" value="abc-net-b2c"/>
  <img name="abc-net-b2c" align="middle" src="<c:url value='/bank_img/abc.bmp'/>"/>
   
  <input id="ccb-net-b2c" type="radio" name="yh" value="ccb-net-b2c"/>
  <img name="ccb-net-b2c" align="middle" src="<c:url value='/bank_img/ccb.bmp'/>"/>
  </div> 
  <div style="margin-bottom: 20px;">
  <input id="bccb-net-b2c" type="radio" name="yh" value="bccb-net-b2c"/>
  <img name="bccb-net-b2c" align="middle" src="<c:url value='/bank_img/bj.bmp'/>"/>
 
  <input id="boco-net-b2c" type="radio" name="yh" value="boco-net-b2c"/>
  <img name="boco-net-b2c" align="middle" src="<c:url value='/bank_img/bcc.bmp'/>"/>
 
  <input id="cib-net-b2c" type="radio" name="yh" value="cib-net-b2c"/>
  <img name="cib-net-b2c" align="middle" src="<c:url value='/bank_img/cib.bmp'/>"/>
 
  <input id="njcb-net-b2c" type="radio" name="yh" value="njcb-net-b2c"/>
  <img name="njcb-net-b2c" align="middle" src="<c:url value='/bank_img/nanjing.bmp'/>"/>
  </div>
  <div style="margin-bottom: 20px;">
  <input id="cmbc-net-b2c" type="radio" name="yh" value="cmbc-net-b2c"/>
  <img name="cmbc-net-b2c" align="middle" src="<c:url value='/bank_img/cmbc.bmp'/>"/>
 
  <input id="ceb-net-b2c" type="radio" name="yh" value="ceb-net-b2c"/>
  <img name="ceb-net-b2c" align="middle" src="<c:url value='/bank_img/guangda.bmp'/>"/>
 
  <input id="boc-net-b2c" type="radio" name="yh" value="boc-net-b2c"/>
  <img name="boc-net-b2c" align="middle" src="<c:url value='/bank_img/bc.bmp'/>"/>
 
  <input id="pinganbank-net" type="radio" name="yh" value="pinganbank-net"/>
  <img name="pinganbank-net" align="middle" src="<c:url value='/bank_img/pingan.bmp'/>"/>
  </div>
  <div style="margin-bottom: 20px;">
  <input id="cbhb-net-b2c" type="radio" name="yh" value="cbhb-net-b2c"/>
  <img name="cbhb-net-b2c" align="middle" src="<c:url value='/bank_img/bh.bmp'/>"/>
 
  <input id="hkbea-net-b2c" type="radio" name="yh" value="hkbea-net-b2c"/>
  <img name="hkbea-net-b2c" align="middle" src="<c:url value='/bank_img/dy.bmp'/>"/>
 
  <input id="nbcb-net-b2c" type="radio" name="yh" value="nbcb-net-b2c"/>
  <img name="nbcb-net-b2c" align="middle" src="<c:url value='/bank_img/ningbo.bmp'/>"/>
 
  <input id="ecitic-net-b2c" type="radio" name="yh" value="ecitic-net-b2c"/>
  <img name="ecitic-net-b2c" align="middle" src="<c:url value='/bank_img/zx.bmp'/>"/>
  </div>
  <div style="margin-bottom: 20px;">
  <input id="sdb-net-b2c" type="radio" name="yh" value="sdb-net-b2c"/>
  <img name="sdb-net-b2c" align="middle" src="<c:url value='/bank_img/sfz.bmp'/>"/>
 
  <input id="gdb-net-b2c" type="radio" name="yh" value="gdb-net-b2c"/>
  <img name="gdb-net-b2c" align="middle" src="<c:url value='/bank_img/gf.bmp'/>"/>
 
  <input id="shb-net-b2c" type="radio" name="yh" value="shb-net-b2c"/>
  <img name="shb-net-b2c" align="middle" src="<c:url value='/bank_img/sh.bmp'/>"/>
 
  <input id="spdb-net-b2c" type="radio" name="yh" value="spdb-net-b2c"/>
  <img name="spdb-net-b2c" align="middle" src="<c:url value='/bank_img/shpd.bmp'/>"/>
  </div>
  <div style="margin-bottom: 20px;">
  <input id="post-net-b2c" type="radio" name="yh" value="post-net-b2c"/>
  <img name="post-net-b2c" align="middle" src="<c:url value='/bank_img/post.bmp'/>"/>
 
  <input id="bjrcb-net-b2c" type="radio" name="yh" value="bjrcb-net-b2c"/>
  <img name="bjrcb-net-b2c" align="middle" src="<c:url value='/bank_img/beijingnongshang.bmp'/>"/>
 
  <input id="hxb-net-b2c" type="radio" name="yh" value="hxb-net-b2c"/>
  <img name="hxb-net-b2c" align="middle" src="<c:url value='/bank_img/hx.bmp'/>"/>
 
  <input id="cz-net-b2c" type="radio" name="yh" value="cz-net-b2c"/>
  <img name="cz-net-b2c" align="middle" src="<c:url value='/bank_img/zheshang.bmp'/>"/>
  </div>
 </div>
 <div style="margin: 40px;">
  <a href="javascript:void $('#form1').submit();" class="linknext">下一步</a>
 </div>
</div>
</form>
 </body>
</html>

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。