f

internal/domains/api/services/api_user_aggregate_service.go

@@ -2,10 +2,14 @@ package services
 
 import (
 	"context"
+	"errors"
 	"time"
+
 	"hyapi-server/internal/config"
 	"hyapi-server/internal/domains/api/entities"
 	repo "hyapi-server/internal/domains/api/repositories"
+
+	"gorm.io/gorm"
 )
 
 type ApiUserAggregateService interface {
@@ -30,6 +34,15 @@ func NewApiUserAggregateService(repo repo.ApiUserRepository, cfg *config.Config)
 }
 
 func (s *ApiUserAggregateServiceImpl) CreateApiUser(ctx context.Context, apiUserId string) error {
+	// 已存在则幂等成功，避免重复 INSERT 导致 PostgreSQL 事务中止（SQLSTATE 25P02）
+	existing, err := s.repo.FindByUserId(ctx, apiUserId)
+	if err == nil && existing != nil {
+		return nil
+	}
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return err
+	}
+
 	apiUser, err := entities.NewApiUser(apiUserId, s.cfg.Wallet.BalanceAlert.DefaultEnabled, s.cfg.Wallet.BalanceAlert.DefaultThreshold)
 	if err != nil {
 		return err

internal/domains/finance/services/wallet_aggregate_service.go

@@ -52,16 +52,20 @@ func NewWalletAggregateService(
 	}
 }
 
-// CreateWallet 创建钱包
+// CreateWallet 创建钱包（已存在则幂等返回已有钱包，避免重复 INSERT 中止事务）
 func (s *WalletAggregateServiceImpl) CreateWallet(ctx context.Context, userID string) (*entities.Wallet, error) {
 	// 检查是否已存在
-	w, _ := s.walletRepo.GetByUserID(ctx, userID)
-	if w != nil {
-		return nil, fmt.Errorf("用户已存在钱包")
+	w, err := s.walletRepo.GetByUserID(ctx, userID)
+	if err == nil && w != nil {
+		return w, nil
 	}
 	wallet := entities.NewWallet(userID, decimal.NewFromFloat(s.cfg.Wallet.DefaultCreditLimit))
 	created, err := s.walletRepo.Create(ctx, *wallet)
 	if err != nil {
+		// 并发下可能已创建成功，再查一次
+		if existing, getErr := s.walletRepo.GetByUserID(ctx, userID); getErr == nil && existing != nil {
+			return existing, nil
+		}
 		s.logger.Error("创建钱包失败", zap.Error(err))
 		return nil, err
 	}