I have a spring application and I added to my user entity unique constraints for username and email. So users can't create many accounts with the same username or email. When someone creates a new user with a username that already exists my app throws me ConstraintViolationException

My exception details:

org.postgresql.util.PSQLException: ERROR: Duplicate key values violate unique constraints "ukdfui7gxngrgwn9ewee3ogtgym" Detail: The key (username) = (dev123) already exists.

My user entity:

@Table(name = "usr", uniqueConstraints={
@UniqueConstraint(columnNames ={"username"}),
@UniqueConstraint(columnNames={"email"})})
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator="usr_seq")
    @SequenceGenerator(name = "usr_seq", sequenceName = "usr_seq", initialValue = 1, allocationSize=1)
    @Column(name="id")
    private Long id;

    @Column(name = "username")
    private String username;

    @Column(name = "password")
    private String password;

    @Column(name = "first_name")
    private String firstName;

    @Column(name = "last_name")
    private String lastName;

    @Column(name = "role")
    private Role role;

    @Column(name = "email")
    private String email;

    @Column(name = "status")
    private Status status;

//    @OneToMany(mappedBy = "author")
//    private List<Message> messages;

//    @OneToMany(mappedBy = "author")
//    private List<Comment> comments;

    @OneToOne
    @JoinColumn(name = "gender_id")
    private Gender gender;

    @OneToOne
    @JoinColumn(name = "address_id")
    private Address address;

    @ManyToMany
    @JoinTable(
            name = "user_subscriptions",
            joinColumns =  @JoinColumn(name = "channel_id") ,
            inverseJoinColumns =  @JoinColumn(name = "subscriber_id"))
    private Set<User> subscribers;

    @ManyToMany
    @JoinTable(
            name = "user_subscriptions",
            joinColumns =  @JoinColumn(name = "subscriber_id") ,
            inverseJoinColumns =  @JoinColumn(name = "channel_id"))
    private Set<User> subscriptions;

    @OneToOne
    @JoinColumn(name = "file_id")
    private FileEntity fileEntity;

}

My user table:

create table usr
(
    id         bigint not null
        constraint usr_pkey
            primary key,
    email      varchar(255)
        constraint ukg9l96r670qkidthshajdtxrqf
            unique,
    first_name varchar(255),
    last_name  varchar(255),
    password   varchar(255),
    role       integer,
    status     integer,
    username   varchar(255)
        constraint ukdfui7gxngrgwn9ewee3ogtgym
            unique,
    address_id integer
        constraint fkilsqnqkb7dlk6s5gqedb6lk3r
            references address,
    file_id    bigint
        constraint fkabswqn807logqymtak5wfktfr
            references file,
    gender_id  integer
        constraint fkp89wdnbeu22hjl41g38rk8a1q
            references gender
);

alter table usr
    owner to postgres;

i tried to handle that exception in @RestControllerAdvice class:

@ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity<Object> handleConstraintViolationException(){
        ExceptionDetails exceptionDetails = new ExceptionDetails(Errors.ERROR9.getMessage(),timestamp);
        return new ResponseEntity<>(exceptionDetails,HttpStatus.FORBIDDEN);
    }

But this catches all the problems with the constraints(not null violation, primary key violation, and so on) and I just want to catch specific constraint violations for my username and email