优化结构

internal/biz/payment/payment.go

@@ -965,6 +965,10 @@ func paymentOrderFingerprint(req *PaymentRequest, extra json.RawMessage) string
 	return hex.EncodeToString(sum[:])
 }
 
+func RequestFingerprint(req *PaymentRequest, extra json.RawMessage) string {
+	return paymentOrderFingerprint(req, extra)
+}
+
 func paymentResultFromOrder(order *PaymentOrder) *PaymentResult {
 	if order == nil {
 		return nil