用户无法从数据库中删除

Question

目标是在用户的卡被删除时检查并删除该卡，前提是该卡不再使用。这是用户删除的格式：

@Transactional
public void deleteUserById(long userId) {
    User user = userRepository.findById(userId);
    if (user == null) {
        throw new IllegalArgumentException("User with id " + userId + " not found");
    }
    userRepository.deleteById(userId);
}

在此格式中，仅当满足“if”条件时才会删除用户，即该卡仅属于被删除的用户。但是，如果该卡属于多个用户，则代码可以正确执行，但不会从数据库中删除该用户。这可能是什么原因？

@Transactional
public void deleteUserById(long userId) {
    User user = userRepository.findById(userId);
    if (user == null) {
        throw new IllegalArgumentException("User with id " + userId + " not found");
    }
    if (userBankCardService.checkBankCardUsers(user.getUserBankCard().getCardNumber()) == 1) {
        userBankCardService.deleteBankCard(user.getUserBankCard().getCardNumber());
    }
    userRepository.deleteById(userId);
}

如果很重要，这是我的实体。

@Entity
@AllArgsConstructor
@NoArgsConstructor
@Data
@Builder
@ToString(exclude = "users")
@Table(name = "users_bank_cards")
public class UserBankCard {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;
    @Column(name = "card_number")
    private long cardNumber;
    @Column(name = "cvv")
    private short cvv;
    @Column(name = "card_expiration_date")
    private String cardExpirationDate;
    @OneToMany(mappedBy = "userBankCard", cascade = CascadeType.ALL)
    @JsonIgnore
    private List<User> users = new ArrayList<>();
}

 @Entity
 @AllArgsConstructor
 @NoArgsConstructor
 @Data
 @Builder
 @ToString(exclude = {"subscription"})
 @Table(name = "users")
 public class User {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private long id;
     @Column(name = "phone_number")
     private long phoneNumber;
     @Column(name = "password")
     private String password;
     @Column(name = "auto_renew")
     @Enumerated(EnumType.STRING)
     private AutoRenewStatus autoRenew;
     @Column(name = "end_time")
     private LocalDateTime endTime;
     @Column(name = "email")
     private String email;
     @ManyToOne
     @JoinColumn(name = "bank_card_id")
     private UserBankCard userBankCard;
     @ManyToOne
     @JoinColumn(name = "subscription_id")
     private Subscription subscription;
 }

不需要删除卡的情况下如何删除用户？

Answer 1

可能有外键。尝试直接在数据库中自行删除用户，并检查是否有错误。就我而言，休眠不会抛出任何异常。