java对接银联商务公众号+服务窗支付（1）
java实现银联商务公众号+服务窗对接----支付下单
本文对接银联商务公众号+服务窗支付，实现支付下单、订单查询、订单退款、退款查询和订单关闭几个功能，使用到银联商务的公众+服务窗支付接口规范，请自行百度下载。
一、接入前准备
创建maven项目，项目目录如下，各目录功能不再详细介绍，直接看接口和功能。
二、接口及代码实现
1.支付下单接口
1.1接口规范
接口规范请查看下载的银联商务公众号+服务窗接口规范下单接口部分，这里不做展示。
1.2 代码实现
1.2.1 UnionPayOnlineController代码
package com.unionpay.controller;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@CrossOrigin
@RequestMapping("/lay")
public class UnionPayOnlineController {
private final static Logger logger = LoggerFactory.getLogger(UnionPayOnlineController.class);
@Autowired
private UnifiedOrderServiceimpl unionpayserviceimpl;
/**
* 公众号支付下单接口
* 调用该接口，跳转到html支付页面
* @param request
* @param response
* @param jsonreq
* @return
* @throws UnsupportedEncodingException
*/
@RequestMapping(value = "/UnifiedPay", method = RequestMethod.GET)
public String unionpay(HttpServletRequest request, HttpServletResponse response,Map resultdatamap) throws UnsupportedEncodingException {
Map datamap = new HashMap(); //客户端请求数据
String key = UnionPayConstants.GGMD5KEY; //国光MD5密钥
//---------------------取到URL请求数据----------------------------------------------------
logger.info("getQueryString:" + request.getQueryString()); //请求url的QueryString
String mid = request.getParameter("mid");
String tid = request.getParameter("tid");
String instMid = request.getParameter("instMid");
String msgSrc = request.getParameter("msgSrc");
String totalAmount = request.getParameter("totalAmount");
String payType = request.getParameter("payType");
String notifyUrl = request.getParameter("notifyUrl");
String returnUrl = request.getParameter("returnUrl");
String sign = request.getParameter("sign");
//--------------------step1 对请求字段值进行URLDecoder转码----------------------------
datamap.put("mid",URLDecoder.decode(mid, "UTF-8"));
datamap.put("tid",URLDecoder.decode(tid, "UTF-8"));
datamap.put("instMid",URLDecoder.decode(instMid, "UTF-8"));
datamap.put("msgSrc",URLDecoder.decode(msgSrc, "UTF-8"));
datamap.put("totalAmount",URLDecoder.decode(totalAmount, "UTF-8"));
datamap.put("msgType",URLDecoder.decode(payType, "UTF-8"));
datamap.put("notifyUrl",URLDecoder.decode(notifyUrl, "UTF-8"));
datamap.put("returnUrl",URLDecoder.decode(returnUrl, "UTF-8"));
logger.info("URLDecoder转码后datamap = " + datamap);
//-------------------------step2验证签名------------------------------------------------------
try {
if (!PayUtil.verifySign(datamap,key,sign)) {
resultdatamap.put("returnInfo", "签名错误");
resultdatamap.put("returnCode", "Bad_Sign");
//String failureurl = unionpayserviceimpl.CreatefailureUrl(resultmap);
//logger.info("url = " + failureurl);
return "failure";
}
//-----------------------step3 验证传参完整性--------------------------
//验证公共参数完整性
if(!PayUtil.verifyParameter(datamap)) {
resultdatamap.put("returnCode", "Common_Value_Error");
resultdatamap.put("returnInfo", "缺少必要公共参数");
return "failure";
}
//验证接口参数完整性
if(datamap.get("totalAmount").equals("") || datamap.get("msgType").equals("")
|| datamap.get("notifyUrl").equals("") || datamap.get("returnUrl").equals("") ) {
resultdatamap.put("returnCode", "Value_Error");
resultdatamap.put("returnInfo", "缺少必要接口参数,必传接口参数不允许为空");
return "failure";
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
resultdatamap.put("returnCode", "System_Error");
resultdatamap.put("returnInfo", "系统异常");
return "failure";
}
//-----------------------step4 传值并生成链接跳转到支付页面--------------------------------
//Map resultdatamap = new HashMap();
resultdatamap.put("mid", mid); //商户号
resultdatamap.put("tid", tid); //终端号
resultdatamap.put("instMid", instMid); //机构商户号
resultdatamap.put("msgSrc", msgSrc); //消息来源
resultdatamap.put("totalAmount", totalAmount); //总金额
resultdatamap.put("msgType", payType); //支付类型
resultdatamap.put("notifyUrl", notifyUrl); //支付结果通知
resultdatamap.put("returnUrl", returnUrl); //网页跳转地址
resultdatamap.put("merOrderId", unionpayserviceimpl.CreateOrderID()); //生成商户订单号
logger.info("resultdatamap = " + resultdatamap);
//根据payType判断回调到哪个支付页面
if(resultdatamap.get("msgType").equals("WXPay.jsPay")) { //微信支付
return "wxunionpay";
}else {
return "aliunionpay"; //支付宝支付
}
}
/**
* a支付失败页面
* @param request
* @param response
* @param returnCode
* @param map
* @return
*/
@RequestMapping(value = "/failure", method = RequestMethod.GET)
public String failure(HttpServletRequest request, HttpServletResponse response,String returnCode,Map map) {
map.put("returnCode", returnCode);
return "failure";
}
/**
* a根据支付页面请求，调起支付下单
* @param request
* @param response
* @param totalAmount
* @param msgType
* @return
*/
@RequestMapping(value = "/unifiedpay", method = RequestMethod.GET)
public String index(HttpServletRequest request, HttpServletResponse response, Map map) {
Map reqmap = new HashMap();
//---------------------取到URL请求数据-----------------------------
logger.info("unifiedpay getQueryString:" + request.getQueryString()); //请求url的QueryString
String mid = request.getParameter("mid");
String tid = request.getParameter("tid");
String instMid = request.getParameter("instMid");
String msgSrc = request.getParameter("msgSrc");
String totalAmount = request.getParameter("totalAmount");
String YtotalAmount = PayUtil.changeY2F(totalAmount); //元转分
logger.info("YtotalAmount = " + YtotalAmount);
String msgType = request.getParameter("msgType");
String notifyUrl = request.getParameter("notifyUrl");
String returnUrl = request.getParameter("returnUrl");
String merOrderId = request.getParameter("merOrderId");
reqmap.put("mid", mid);
reqmap.put("tid", tid);
reqmap.put("instMid", instMid);
reqmap.put("msgSrc", msgSrc);
reqmap.put("totalAmount", YtotalAmount);
reqmap.put("msgType", msgType);
reqmap.put("notifyUrl", notifyUrl);
reqmap.put("returnUrl", returnUrl);
reqmap.put("merOrderId", merOrderId);
logger.info("reqmap = " + reqmap);
String url = "";
try {
url = unionpayserviceimpl.UnifiedOrder(reqmap);
//logger.info("请求URL = " + url);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// if(url.equals("缺少必要参数，请核实后再进行下单")) {
// map.put("returnCode", "缺少必要参数，请核实后再进行下单");
// return "failure";
// }
return "redirect:" + url; //重定向到下单页面
}
}
1.2.2 UnionpayServiceimpl代码
本部分代码为银联商务支付下单接口服务。
/**
* 银联商务支付下单
* return map
* @throws UnsupportedEncodingException
*/
@Override
public String UnifiedOrder(Map map) throws UnsupportedEncodingException {
// TODO Auto-generated method stub
Map reqmap = new HashMap(); //请求银联商务map
reqmap.put("mid", map.get("mid")); //商户号
reqmap.put("tid", map.get("tid")); //终端号
reqmap.put("instMid", map.get("instMid"));
reqmap.put("msgSrc", map.get("msgSrc")); //消息来源
reqmap.put("msgId", "UnionPay_F001"); //自定义
reqmap.put("msgType", map.get("msgType")); //支付类型,前端传入
//报文请求时间
String aligetTime = PayUtil.aligetTime();
logger.info("end_time = " + aligetTime);
reqmap.put("requestTimestamp", aligetTime);
//商户订单号
//reqmap.put("msgSrcId", this.msgSrcId); //来源编号
// String orderid = GGitUtil.createOrderID();
// StringBuffer buff = new StringBuffer();
// buff.append(this.msgSrcId);
// buff.append(orderid);
reqmap.put("merOrderId", map.get("merOrderId"));
reqmap.put("originalAmount", map.get("totalAmount")); //前端传入
reqmap.put("totalAmount",map.get("totalAmount")); //订单金额
reqmap.put("notifyUrl", map.get("notifyUrl")); //支付结果通知地址
reqmap.put("returnUrl", map.get("returnUrl")); //网页跳转地址
//生成待签名字符串并进行MD5加密
String builderSignStr = "";
try {
builderSignStr = PayUtil.builderSignStr(reqmap,UnionPayConstants.MD5KEY);
//signString = PayUtil.generateSignature(reqmap, UnionPayConstants.MD5KEY);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
reqmap.put("sign", builderSignStr);
logger.info("reqmap= " + reqmap);
//拼接请求URL
StringBuffer url = new StringBuffer();
try {
url.append("https://qr-test2.chinaums.com/netpay-portal/webpay/pay.do?");
url.append("requestTimestamp=" + URLEncoder.encode((String) reqmap.get("requestTimestamp"), "UTF-8") +
"&mid=" + URLEncoder.encode((String) reqmap.get("mid"), "UTF-8") +
"&tid="+ URLEncoder.encode((String) reqmap.get("tid"), "UTF-8") +
"&instMid=" + URLEncoder.encode((String) reqmap.get("instMid"), "UTF-8") +
"&msgSrc=" + URLEncoder.encode((String) reqmap.get("msgSrc"), "UTF-8") +
"&merOrderId=" + URLEncoder.encode((String) reqmap.get("merOrderId"), "UTF-8") +
"&totalAmount=" + URLEncoder.encode((String) reqmap.get("totalAmount"), "UTF-8") +
"&msgId=" + URLEncoder.encode((String) reqmap.get("msgId"), "UTF-8") +
"&msgType=" + URLEncoder.encode((String) reqmap.get("msgType"), "UTF-8") +
"&originalAmount=" + URLEncoder.encode((String) reqmap.get("originalAmount"), "UTF-8") +
"¬ifyUrl=" + URLEncoder.encode((String) reqmap.get("notifyUrl"), "UTF-8") +
"&returnUrl=" + URLEncoder.encode((String) reqmap.get("returnUrl"), "UTF-8") +
"&sign=" + URLEncoder.encode((String) reqmap.get("sign"), "UTF-8"));
logger.info("银联商务下单url = " + url);
} catch (Exception e) {
// TODO: handle exception
return "缺少必要参数，请核实后再进行下单";
}
return url.toString();
}1.3 支付结果截图
在下单接口中，我先在写了一个支付的html页面，用于显示支付信息，用户点击“去支付”按钮调起图二支付页面，支付完成时，用户点击“完成”按钮，跳转到程序中指定的returnurl地址中，支付结果通知到notifyurl地址中。
支付下单参数由银联商务分配的参数填入。
访问地址：http://172.20.10.2:8080/UnionPay/lay/UnifiedPay(本地环境访问)
支付连接为：http://172.20.10.2:8080/UnionPay/lay/UnifiedPay?mid=******&tid=******&instMid=******&msgSrc=******&payType=WXPay.jsPay&totalAmount=0.11¬ifyUrl=http%3A%2F%2F******&returnUrl=http%3A%2F%2F******&sign=B2AD890DD4636C9A9AEA03F265BE695A
根据博友的需求，这里增加下银商验签部分代码
/**
* 生成 MD5
*
* @param data
* 待处理数据
* @return MD5结果
*/
public static String MD5(String data) throws Exception {
java.security.MessageDigest md = MessageDigest.getInstance("MD5");
byte[] array = md.digest(data.getBytes("UTF-8"));
StringBuilder sb = new StringBuilder();
for (byte item : array) {
sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString().toUpperCase();
}
/**
* 生成待签名数据
* @param params
* @return
* @throws Exception
*/
public static String builderSignStr(Map<String, Object> params,String md5key) throws Exception {
Set<String> keySet = params.keySet();
List<String>keyList = new ArrayList<String>(keySet);
Collections.sort(keyList);
StringBuilder sb = new StringBuilder();
for (String key : keyList) {
sb.append(key);
sb.append("=");
sb.append(params.get(key));
sb.append("&");
}
sb.deleteCharAt(sb.length() - 1); //去掉最后一个&
sb.append(md5key);
logger.info("builderSignStr= " + sb.toString());
logger.info("验证sign:" + MD5(sb.toString()).toUpperCase());
return MD5(sb.toString()).toUpperCase();
}