修改了领取优惠卷的入参格式，

api/requests/v1/Coupon.go

@@ -7,11 +7,6 @@ type CouponRequest struct {
 // ReceiveCoupon 领取优惠卷
 type ReceiveCoupon struct {
 	Mobile   string `json:"mobile" form:"mobile" validate:"required,Mobile" label:"手机号"`
-	ReceiveCouponCoupon []*ReceiveCouponCoupon `json:"coupon" form:"coupon" validate:"required" label:"优惠卷"` // 领取优惠卷，优惠卷部分入参数据
-}
-
-// ReceiveCouponCoupon 领取优惠卷，优惠卷部分入参数据
-type ReceiveCouponCoupon struct {
 	CouponId string `json:"coupon_id" form:"coupon_id" validate:"required" label:"优惠卷id"`
 	Quantity int    `json:"quantity" form:"quantity" validate:"required" label:"优惠卷数量"`
 }

api/service/v1/Coupon.go

@@ -50,51 +50,26 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 		return g, err
 	}
 
-	// 开始事务
+	// 将 id 转换为 int64 类型
-	tx := global.Db.Begin()
+	couponId, err := strconv.ParseInt(req.CouponId, 10, 64)
-	defer func() {
-		if r := recover(); r != nil {
-			tx.Rollback()
-		}
-	}()
-
-	// 建立队列连接
-	rabbitMQ, err := rabbitMq.NewRabbitMQClient()
 	if err != nil {
-		tx.Rollback()
 		return g, errors.New("内部错误")
 	}
 
-	defer rabbitMQ.Close()
-
 	// 获取优惠卷数据
 	couponDao := dao.CouponDao{}
-	userCouponDao := dao.UserCouponDao{}
-	popupDao := dao.PopupDao{}
-	for _, v := range req.ReceiveCouponCoupon {
-		// 将 id 转换为 int64 类型
-		couponId, err := strconv.ParseInt(v.CouponId, 10, 64)
-		if err != nil {
-			tx.Rollback()
-			return g, errors.New("内部错误")
-		}
-
 	coupon, _ := couponDao.GetCouponById(couponId)
 	if coupon == nil {
-			tx.Rollback()
 		return nil, errors.New("非法优惠卷")
 	}
 
 	// 检测优惠卷状态
 	if coupon.CouponStatus != 1 {
-			tx.Rollback()
 		return nil, errors.New("存在错误优惠卷")
 	}
 
 	// 检测发放优惠卷数量
-		if v.Quantity <= 0 {
+	if req.Quantity <= 0 {
-			tx.Rollback()
-
 		g = &dtoV1.ReceiveCouponDto{
 			Status:  0,
 			Message: "优惠卷数量错误",
@@ -106,8 +81,6 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 	// 检测优惠卷剩余数量
 	remainingQuantity := coupon.CouponCount - coupon.CouponTakeCount
 	if remainingQuantity <= 0 {
-			tx.Rollback()
-
 		g = &dtoV1.ReceiveCouponDto{
 			Status:  0,
 			Message: "优惠卷数量不足，领取失败",
@@ -116,9 +89,7 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 		return g, nil
 	}
 
-		if remainingQuantity < v.Quantity {
+	if remainingQuantity < req.Quantity {
-			tx.Rollback()
-
 		g = &dtoV1.ReceiveCouponDto{
 			Status:  0,
 			Message: "优惠卷数量不足，领取失败",
@@ -135,8 +106,6 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 		// 1:绝对时效
 		validStartTime := time.Time(coupon.ValidStartTime)
 		if now.Before(validStartTime) {
-				tx.Rollback()
-
 			g = &dtoV1.ReceiveCouponDto{
 				Status:  0,
 				Message: "优惠卷还未启用",
@@ -147,8 +116,6 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 
 		validEndTime := time.Time(coupon.ValidEndTime)
 		if now.After(validEndTime) {
-				tx.Rollback()
-
 			g = &dtoV1.ReceiveCouponDto{
 				Status:  0,
 				Message: "优惠卷已过期",
@@ -159,13 +126,28 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 	}
 
 	// 检测用户是否已领取该优惠卷
-		maps := make(map[string]interface{})
+	userCouponDao := dao.UserCouponDao{}
+
+	maps = make(map[string]interface{})
 	maps["user_id"] = user.UserId
 	maps["coupon_id"] = coupon.CouponId
 	userCoupon, _ := userCouponDao.GetUserCoupon(maps)
 	if userCoupon != nil {
-			continue
+		g = &dtoV1.ReceiveCouponDto{
+			Status:  0,
+			Message: "重复领取",
+			Data:    nil,
 		}
+		return g, nil
+	}
+
+	// 开始事务
+	tx := global.Db.Begin()
+	defer func() {
+		if r := recover(); r != nil {
+			tx.Rollback()
+		}
+	}()
 
 	// 添加用户优惠卷表
 	UserCouponModel := &model.UserCoupon{
@@ -193,7 +175,7 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 	}
 
 	// 增加优惠卷发放数量
-		err = couponDao.Inc(tx, couponId, "coupon_take_count", v.Quantity)
+	err = couponDao.Inc(tx, couponId, "coupon_take_count", req.Quantity)
 	if err != nil {
 		tx.Rollback()
 		return nil, errors.New("发放失败")
@@ -228,6 +210,7 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 
 		popupModel.PopupContent = string(popupContentData)
 
+		popupDao := dao.PopupDao{}
 		popup, _ := popupDao.AddPopup(tx, popupModel)
 		if popup == nil {
 			tx.Rollback()
@@ -242,6 +225,15 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 	endOfDay := time.Date(year, month, day, 23, 59, 59, 0, location)
 	if userCoupon.ValidEndTime.Before(endOfDay) {
 		// 需添加队列
+		// 建立队列连接
+		rabbitMQ, err := rabbitMq.NewRabbitMQClient()
+		if err != nil {
+			tx.Rollback()
+			return g, errors.New("内部错误")
+		}
+
+		defer rabbitMQ.Close()
+
 		data := make(map[string]interface{})
 		data["user_coupon_id"] = fmt.Sprintf("%d", userCoupon.UserCouponId)
 
@@ -265,7 +257,6 @@ func (r *CouponService) ReceiveCoupon(req requestsV1.ReceiveCoupon) (g *dtoV1.Re
 			}
 		}()
 	}
-	}
 
 	tx.Commit()