Question

I am using Hibernate validator for form validation in my web-app. I am using the @Length() annotation for my String attribute as follows

@Length(min = 5, message = "The field must be at least 5 characters")
private String myString;

However, I have a need to display a different message if the String exceeds 50 characters. Is there a way to use the out-of-the-box @Length validator to do this? An example of what I would like to do (compiler will not let me) is as follows:

@Length(min = 5, message = "The field must be at least 5 characters")
@Length(max = 50, message = "The field must be less than 50 characters")
private String myString;

I have tried @Max and @Min and they do not do what I want. Any input would be greatly appreciated!

Answer 1

You can specify several @Length constraints at one element by using the inner list annotation (which is defined for each constraint type in Bean Validation/Hibernate Validator) like this:

@List({
    @Length(min = 5, message = "The field must be at least 5 characters"),
    @Length(max = 50, message = "The field must be less than 50 characters")
})
private String myString;

Btw. I recommend to prefer @Size as defined by the Bean Validation API over @Length for portability reasons.