优化提现问题

backend/internal/modules/withdrawal/admin.go

@@ -10,6 +10,7 @@ import (
 	"hfb_sys/backend/internal/modules/wallet"
 
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 // 管理员查询提现列表
@@ -71,35 +72,32 @@ func (r *Repository) AdminFindByID(ctx context.Context, id uint64) (*WithdrawalD
 
 // 管理员审核提现
 func (r *Repository) Review(ctx context.Context, adminID, id uint64, req ReviewWithdrawalRequest) (*WithdrawalDetailDTO, error) {
-	db := r.db.WithContext(ctx)
-	var withdrawal model.WithdrawalRequest
-	if err := db.First(&withdrawal, id).Error; err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, ErrWithdrawalNotFound
+	err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		var withdrawal model.WithdrawalRequest
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&withdrawal, id).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrWithdrawalNotFound
+			}
+			return err
 		}
-		return nil, err
-	}
 
-	// 只有待审核状态可以审核
-	if withdrawal.Status != "pending" {
-		return nil, ErrWithdrawalLocked
-	}
+		// 事务内加行锁后重新校验，只有待审核状态可以审核，避免并发重复处理
+		if withdrawal.Status != "pending" {
+			return ErrWithdrawalLocked
+		}
 
-	now := time.Now()
+		now := time.Now()
+		if req.Approved {
+			// 审核通过，进入处理中状态
+			withdrawal.Status = "processing"
+		} else {
+			// 审核拒绝，解冻余额
+			withdrawal.Status = "rejected"
+		}
+		withdrawal.ReviewedBy = &adminID
+		withdrawal.ReviewedAt = &now
+		withdrawal.ReviewRemark = req.Remark
 
-	if req.Approved {
-		// 审核通过，进入处理中状态
-		withdrawal.Status = "processing"
-	} else {
-		// 审核拒绝，解冻余额
-		withdrawal.Status = "rejected"
-	}
-
-	withdrawal.ReviewedBy = &adminID
-	withdrawal.ReviewedAt = &now
-	withdrawal.ReviewRemark = req.Remark
-
-	err := db.Transaction(func(tx *gorm.DB) error {
 		if err := tx.Save(&withdrawal).Error; err != nil {
 			return err
 		}
@@ -129,7 +127,6 @@ func (r *Repository) Review(ctx context.Context, adminID, id uint64, req ReviewW
 
 		return nil
 	})
-
 	if err != nil {
 		return nil, err
 	}
@@ -141,28 +138,27 @@ func (r *Repository) Review(ctx context.Context, adminID, id uint64, req ReviewW
 
 // 管理员确认打款
 func (r *Repository) ConfirmPayment(ctx context.Context, adminID, id uint64, req ConfirmPaymentRequest) (*WithdrawalDetailDTO, error) {
-	db := r.db.WithContext(ctx)
-	var withdrawal model.WithdrawalRequest
-	if err := db.First(&withdrawal, id).Error; err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, ErrWithdrawalNotFound
+	err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		var withdrawal model.WithdrawalRequest
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&withdrawal, id).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrWithdrawalNotFound
+			}
+			return err
 		}
-		return nil, err
-	}
 
-	// 只有处理中状态可以确认打款
-	if withdrawal.Status != "processing" {
-		return nil, ErrWithdrawalLocked
-	}
+		// 事务内加行锁后重新校验，只有处理中状态可以确认打款，避免并发重复扣减冻结余额
+		if withdrawal.Status != "processing" {
+			return ErrWithdrawalLocked
+		}
 
-	now := time.Now()
-	withdrawal.Status = "completed"
-	withdrawal.PaidBy = &adminID
-	withdrawal.PaidAt = &now
-	withdrawal.PaymentProofURL = req.PaymentProofURL
-	withdrawal.PaymentRemark = req.Remark
+		now := time.Now()
+		withdrawal.Status = "completed"
+		withdrawal.PaidBy = &adminID
+		withdrawal.PaidAt = &now
+		withdrawal.PaymentProofURL = req.PaymentProofURL
+		withdrawal.PaymentRemark = req.Remark
 
-	err := db.Transaction(func(tx *gorm.DB) error {
 		if err := tx.Save(&withdrawal).Error; err != nil {
 			return err
 		}
@@ -182,7 +178,6 @@ func (r *Repository) ConfirmPayment(ctx context.Context, adminID, id uint64, req
 
 		return nil
 	})
-
 	if err != nil {
 		return nil, err
 	}

backend/internal/modules/withdrawal/user.go

@@ -8,6 +8,7 @@ import (
 	"hfb_sys/backend/internal/modules/wallet"
 
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 // 用户创建提现申请
@@ -146,22 +147,22 @@ func (r *Repository) FindByID(ctx context.Context, userID, id uint64) (*Withdraw
 
 // 用户取消提现
 func (r *Repository) Cancel(ctx context.Context, userID, id uint64) error {
-	db := r.db.WithContext(ctx)
-	var withdrawal model.WithdrawalRequest
-	if err := db.Where("id = ? AND user_id = ?", id, userID).
-		First(&withdrawal).Error; err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return ErrWithdrawalNotFound
+	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		var withdrawal model.WithdrawalRequest
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
+			Where("id = ? AND user_id = ?", id, userID).
+			First(&withdrawal).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrWithdrawalNotFound
+			}
+			return err
 		}
-		return err
-	}
 
-	// 只有待审核状态可以取消
-	if withdrawal.Status != "pending" {
-		return ErrWithdrawalLocked
-	}
+		// 事务内加行锁后重新校验，只有待审核状态可以取消，避免与管理员审核并发重复解冻
+		if withdrawal.Status != "pending" {
+			return ErrWithdrawalLocked
+		}
 
-	return db.Transaction(func(tx *gorm.DB) error {
 		// 更新状态
 		if err := tx.Model(&withdrawal).Update("status", "cancelled").Error; err != nil {
 			return err