java对接银联商务公众号+服务窗支付(3)

java实现银联商务公众号+服务窗对接----订单退款

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。
在上两篇支付下单和下单查询中,已经实现公众号下单支付和下单查询功能的实现和接口的封装,本篇将介绍退款接口的对接实现,并将我使用到的银联商务的请求接口和响应接口进行封装,使用测试网页输出测试信息。
一、接口及代码实现
1.订单退款接口
1.1接口规范
接口规范请查看下载的银联商务公众号+服务窗接口规范退款接口接口部分,这里不做展示。
1.2 代码实现
1.2.1 UnifieRefundController代码

/**
  * 退款接口
  * @param request
  * @param response
  * @param merOrderId
  * @param refundAmount
  * @return
  * @throws UnsupportedEncodingException
  */
 @RequestMapping(value = "/OrderRefund", method = RequestMethod.POST)
 public Map<String, Object> query(HttpServletRequest request, HttpServletResponse response, @RequestBody String jsonreq) throws UnsupportedEncodingException {  
  Map<String,Object> map = new HashMap<String,Object>();    //接收退款请求map
  Map<String,Object> reqmap = new HashMap<String,Object>();  //客户端原始请求map
  Map<String,Object> datamap = new HashMap<String,Object>();  //客户端原始请求Data数据
  Map<String,Object> resultmap = new HashMap<String,Object>(); //返回结果
  //接收客户端请求数据并转换成map
  reqmap = JsonUtils.JsonToMapObj(jsonreq);
  logger.info("unifiedquery reqmap = " + reqmap);
  
  datamap = (Map<String, Object>) reqmap.get("tradeParam"); //tradeParam请求体数据
  logger.info("unifiedquery datamap = " + datamap);
  
  //-------------------------step1  验证签名-----------------------------
  String sign = (String) reqmap.get("sign");  //获取sign
  String key = UnionPayConstants.GGMD5KEY;  //国光MD5密钥
  try {
   if (!PayUtil.verifySign(datamap,key,sign)) {
    resultmap.put("returnCode", "Bad_Sign");
    resultmap.put("returnInfo", "签名错误");
    return resultmap;
   }
  //-----------------------step2  验证消息类型  tradeType:refund-------------------
   if (!"refund".equals(reqmap.get("tradeType"))) {
    resultmap.put("returnCode", "TradeType_Error");
    resultmap.put("returnInfo", "消息类型不符");
    return resultmap;
   }
  //------------------------step3 验证传参完整性----------------------------------
   //验证公共参数完整性
   if(!PayUtil.verifyParameter(datamap)) {
    resultmap.put("returnCode", "Common_Value_Error");
    resultmap.put("returnInfo", "缺少必要公共参数");
    return resultmap;
   }
   //验证接口参数完整性
   if(datamap.get("merOrderId").equals("") || datamap.get("refundAmount").equals("")) {
    resultmap.put("returnCode", "Value_Error");
    resultmap.put("returnInfo", "缺少必要接口参数");
    return resultmap;
   }
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   resultmap.put("returnCode", "System_Error");
   resultmap.put("returnInfo", "系统异常");
   return resultmap;
  }
  //------------------------step4 传值并调用退款接口--------------------------------
  map.put("mid", datamap.get("mid"));         //商户号
  map.put("tid", datamap.get("tid"));      //终端号
  map.put("instMid", datamap.get("instMid"));    //机构商户号
  map.put("msgSrc", datamap.get("msgSrc"));    //消息来源
  map.put("merOrderId", datamap.get("merOrderId"));  //原支付订单号
  map.put("refundAmount", datamap.get("refundAmount"));   //退款金额
  Map<String, Object> refundmap = refundserviceimpl.Refund(map);
  logger.info("refundmap = " + refundmap);
  
  if(!"200".equals(refundmap.get("statuscode"))) {
   resultmap.put("returnCode", "Union_Connect_Error");
   resultmap.put("returnInfo", "银联网付连接失败");
   return resultmap;
  }
  //------------------------step5接口返回数据----------------------------------
  Map<String,Object> resultdatamap = new HashMap<String,Object>(); //resultmap中data数据
  resultdatamap.put("errCode", refundmap.get("errCode"));    //平台错误码
  resultdatamap.put("status", refundmap.get("status"));    //交易状态
  resultdatamap.put("totalAmount", refundmap.get("totalAmount"));  //退款金额
  resultdatamap.put("targetSys", refundmap.get("targetSys"));   //目标平台代码(第三方代码)
  resultdatamap.put("targetStatus", refundmap.get("targetStatus")); //目标平台状态
  resultdatamap.put("refundStatus", refundmap.get("refundStatus")); //支付时间
  resultdatamap.put("refundOrderId", refundmap.get("refundOrderId")); //平台退款订单号
  resultdatamap.put("refundTargetOrderId", refundmap.get("refundTargetOrderId")); //第三方退款订单号
  resultdatamap.put("messageType", refundmap.get("msgType"));   //消息类型
  
  resultmap.put("data", resultdatamap);
  resultmap.put("returnCode", refundmap.get("errCode")); 
  //resultmap.put("returnInfo", refundmap.get("errMsg"));
  
  return resultmap; 
 }

1.2.2 refundserviceimpl代码

本部分代码为银联商务公众号退款接口服务实现类。

public Map<String, Object> Refund(Map<String, Object> map) throws UnsupportedEncodingException {
  // TODO Auto-generated method stub
  logger.info("------------------refund--------------------------");
  Map<String, Object> reqmap = new HashMap<String, Object>(); //请求map
  Map<String, Object> resp = new HashMap<String, Object>(); //响应resp
  reqmap.put("mid", map.get("mid").toString());   //商户号,前端传入
  reqmap.put("tid", map.get("tid").toString());   //终端号
  reqmap.put("instMid",map.get("instMid").toString()); //业务类型
  reqmap.put("msgSrc", map.get("msgSrc").toString());  //消息来源
  reqmap.put("msgId", "UnionPay_F003");     
  reqmap.put("msgType", "refund");      //消息类型
  
  //报文请求时间
  String aligetTime = PayUtil.aligetTime();
  logger.info("请求时间aligetTime = " + aligetTime);
  reqmap.put("requestTimestamp", aligetTime); 
  reqmap.put("merOrderId", map.get("merOrderId").toString());  //原商户交易订单号,前端传入
  reqmap.put("refundAmount", map.get("refundAmount").toString()); //退款金额,前端传入
  
  //下单时未上送分账标识,上传分账标识,需进一步讨论退款金额
  
  reqmap.put("refundDesc", "订单退款"); //退款说明
  //生成退款订单号
  String refundorderid = GGitUtil.createOrderID();
  StringBuffer buff = new StringBuffer(); 
  buff.append(this.msgSrcId); //来源编号3194
  buff.append(refundorderid);
  reqmap.put("refundOrderId", buff.toString());
  
  //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);
  
  String jsonstring = GGitUtil.MapToJson2(reqmap); //请求map转成json string
  logger.info("发送refund post请求消息:" + jsonstring);
  
  //接收银联商务返回退款map
  resp = unionpayrequest.dopost(UnionPayConstants.queryURL, jsonstring);
  return resp;
 }

1.3测试结果
本文对所写接口写了测试网页进行测试,如图所示。封装的银联商务响应接口中,返回商户退款订单号,第三方退款订单号,消息类型、退款状态等,其中退款状态status为TRADE_SUCCESS,表示退款操作成功,此时查看微信支付记录中,可以看到退款到账信息。

java对接银联商务公众号+服务窗支付(3)_第1张图片

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