add returnURl

repository/pay/pay.go

@@ -185,7 +185,8 @@ func UnifiedOrder(input *models.PlaceAnOrderParamInput, ip string) (interface{},
 		if input.SourceCode == 2 {
 			data2["trans_type"] = "71" //接入方式:微信小程序
 		} else if input.SourceCode == 18 {
-			data2["trans_type"] = "41" //接入方式:ALIPAY
+			data2["trans_type"] = "41"              //接入方式:ALIPAY
+			data2["callback_url"] = input.ReturnURL //客户端下单完成支付后返回的商户网页跳转地址
 		} else {
 			data2["trans_type"] = "51" //接入方式:微信JSAPI
 		}