Add a Custom message for the Unique Constraints in hibernate

Question

@Entity @Table(name=\"users\",uniqueConstraints = {@UniqueConstraint(columnNames = {\"email\"})})
public class User implements Serializable {
    @Column(unique = tr         


        

Answer 1

I resolve similar problem in Spring Boot I Hope It will help u.

@ControllerAdvice
public class ControllerExceptionHandler extends ResponseEntityExceptionHandler {

@ExceptionHandler(value = {DataIntegrityViolationException.class})
protected ResponseEntity handleConflict(DataIntegrityViolationException ex, WebRequest request) {
    JSONObject result = new JSONObject();
    result.appendField("result", false);
    String errorMessage = "";

    org.hibernate.exception.ConstraintViolationException exDetail =
            (org.hibernate.exception.ConstraintViolationException) ex.getCause();

    errorMessage = fieldCnvrt(exDetail.getConstraintName()) + " birden fazla aynı değer içeremez!";


    result.appendField("message", errorMessage);
    return ResponseEntity.status(HttpStatus.NOT_ACCEPTABLE).body(result);
}

private String fieldCnvrt(String field) {
    switch (field) {
        case "username":
            field = "Kullanıcı Adı";
            break;
        case "email":
            field = "Email";
            break;
        case "short_name":
            field = "Kısaltımış Ad";
            break;
        case "name":
            field = "Ad";
            break;
    }

    return field;
}

}