修复拉卡拉支付时间偏差

backend/internal/integrations/payment/lakala/client.go

@@ -19,6 +19,8 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
+	"hfb_sys/backend/internal/timeutil"
 )
 
 var (
@@ -174,11 +176,12 @@ func (c *Client) CreatePayment(ctx context.Context, req CreatePaymentRequest) (*
 	if expireMinutes <= 0 {
 		expireMinutes = 15
 	}
+	now := timeutil.ShanghaiNow()
 	reqData := map[string]any{
 		"out_order_no":         req.ThirdOrderID,
 		"merchant_no":          c.cfg.MerchantID,
 		"total_amount":         req.AmountCent,
-		"order_efficient_time": time.Now().Add(time.Duration(expireMinutes) * time.Minute).Format("20060102150405"),
+		"order_efficient_time": now.Add(time.Duration(expireMinutes) * time.Minute).Format("20060102150405"),
 		"notify_url":           firstNonEmpty(req.NotifyURL, c.cfg.NotifyURL),
 		"support_refund":       1,
 		"support_repeat_pay":   1,
@@ -364,7 +367,7 @@ func ParsePayload(body []byte) (map[string]string, error) {
 
 func (c *Client) post(ctx context.Context, endpoint string, reqData map[string]any) (map[string]string, error) {
 	body, err := json.Marshal(map[string]any{
-		"req_time": time.Now().Format("20060102150405"),
+		"req_time": timeutil.ShanghaiNow().Format("20060102150405"),
 		"version":  "3.0",
 		"req_data": reqData,
 	})