Mapping specific constraint validator to specific ContraintViolationException in Jersey

问题

I am trying to create a custom validator and mapped it into a specific constraintViolationException. The reason is I want to create different custom exception for different constraint. For example, if a user is not found in the database, a not found violationException is triggered, while if the user has invalid username, a bad response violationException will be executed instead.

@Retention(RUNTIME)
@Target({ FIELD, METHOD })
@Constraint(validatedBy = UserNotValidValidator.class)
public @interface UserIsValid { ... }

mapped into

public class ConstraintExceptionMapper implements
    ExceptionMapper<ConstraintViolationException> {
   public Response toResponse(ConstraintViolationException e) { ... }
}

To be more specific, the question is whether bean hibernate validator supports multiple constraint exception mapper.

回答1:

Exception mappers are a concept of JAX-RS not of Bean Validation. You should create one exception mapper for ConstraintViolationException and have it create different responses based on the violations contained within a given violation exception. E.g. you can examine the violated constraint type via `ConstraintViolation.getConstraintDescriptor().getAnnotation().annotationType().

来源：https://stackoverflow.com/questions/20275630/mapping-specific-constraint-validator-to-specific-contraintviolationexception-in