创建扫码订单，完成支付

1. 编写UnionPayController.java代码

   @Login
   @PostMapping("/scanCodePayOrder")
   @ApiOperation("付款码收款")
   public R scanCodePayOrder(@RequestBody ScanCodePayOrderForm form, @RequestHeader HashMap header) {
   ValidatorUtils.validateEntity(form);
   String token = header.get("token").toString();
   Long userId = Long.parseLong(jwtUtils.getClaimByToken(token).getSubject());
   int orderId = form.getOrderId();
   UserEntity user = new UserEntity();
   user.setUserId(userId);
   QueryWrapper wrapper = new QueryWrapper(user);
   long count = userService.count(wrapper);
   if (count == 0) {
       return R.error("用户不存在");
   }
   OrderEntity order = new OrderEntity();
   order.setUserId(userId.intValue());
   order.setId(orderId);
   order.setStatus(1);
   wrapper = new QueryWrapper(order);
   count = orderService.count(wrapper);
   if (count == 0) {
       return R.error("不是有效的订单");
   }
   //验证购物券是否有效
   //验证团购活动是否有效
   order = new OrderEntity();
   order.setId(orderId);
   wrapper = new QueryWrapper(order);
   order = orderService.getOne(wrapper);
   //向微信平台发出请求，创建支付订单
   String amount = order.getAmount().multiply(new BigDecimal("100")).intValue() + "";
   Map<String, String> contentData = new HashMap<String, String>();
   contentData.put("version", "5.0.0");  //版本号 全渠道默认值
   contentData.put("encoding", "UTF-8"); //字符集编码 可以使用UTF-8,GBK两种方式
   contentData.put("signMethod", "01"); //签名方法
   contentData.put("txnType", "01");    //交易类型 01:消费
   contentData.put("txnSubType", "06");   //交易子类 06：二维码消费
   contentData.put("bizType", "000000");  //填写000000
   contentData.put("channelType", "08");  //渠道类型 08手机
   contentData.put("merId", mchId);   //商户号码
   contentData.put("accessType", "0");  //接入类型，商户接入填0 ，不需修改
   contentData.put("orderId", order.getCode());    //商户订单号
   //订单发送时间，取系统时间，格式为YYYYMMDDhhmmss，必须取当前时间，否则会报txnTime无效
   contentData.put("txnTime", new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()));
   contentData.put("txnAmt", amount);   //交易金额
   contentData.put("currencyCode", "156"); //境内商户固定 156 人民币
   contentData.put("qrNo", form.getAuthCode());   //C2B码,1-20位数字
   contentData.put("termId", "49000002");  //终端号
   contentData.put("backUrl", backUrl);
   Map<String, String> reqData = acpService.sign(contentData,"UTF-8");
   String requestAppUrl = config.getBackRequestUrl();
   //发送请求报文并接受同步应答（默认连接超时时间30秒，读取返回结果超时时间30秒）
   Map<String, String> rspData = AcpService.post(reqData,requestAppUrl,"UTF-8");
   if(!rspData.isEmpty()){
       if(acpService.validate(rspData, "UTF-8")){
           String respCode = rspData.get("respCode") ;
           if(("00").equals(respCode)){
               String queryId=rspData.get("queryId");
               order.setPrepayId(queryId);
               order.setStatus(2);
               order.setPaymentType(3);
               UpdateWrapper updateWrapper = new UpdateWrapper();
               updateWrapper.eq("id", order.getId());
               orderService.update(order, updateWrapper);
               return R.ok("付款成功");
           }else{
               return R.error("付款失败");
           }
       }else{
           return R.error("付款失败");
       }
   }else{
       return R.error("付款失败");
   }
   }

2.编写payment.js文件，加入else语句

else if(/^622[0-9]{16}$/.test(authCode)){
    url=unionUrl.scanCodePayOrder
}
//下面发送Ajax的代码不需要修改