设置折当面付的product_code为FACE_TO_FACE_PAYMENT

third/alipay/alipay.go

@@ -45,7 +45,7 @@ func PayNavite(param *PayParams)(*alipay.TradePreCreateRsp, error){
 	if param.ProductCode == ""{
 		p.ProductCode = p.ProductCode
 	}else{
-		p.ProductCode = "FAST_INSTANT_TRADE_PAY"
+		p.ProductCode = "FACE_TO_FACE_PAYMENT"
 	}
 	fmt.Println("----------------------->阿里支付TradePreCreate参数-->", p)
 	resp, err := alipayClient.TradePreCreate(p)