No validator could be found for constraint 'javax.validation.constraints.Size'

Question

I have the following error

javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint 'javax.validation.constraints.Size' validating type 'java.lang.Integer'. Check configuration for 'discounted'

My code is:

@Column(name= "discount_percentage")
@Size(min=0, max=90)
@Min(0)
@Max(90)
private Integer discountPercentage = 0;

I set it to 0 because i was getting a NullPointerException when loading my view. And is Integer because i was reading in others question, and some people says that sometimes there are problems when using @Size with primitive types.

What should i do? Thanks in advance.

FYI This is is NOT the JPA API. It is the Bean Validation API. — , May 03 '18 at 17:38

Amit Bera · Accepted Answer · 2018-05-03T17:36:38.693

39

@Size is a Bean Validation annotation that validates that the associated String has a value whose length is bounded by the minimum and maximum values. And as your exception says it does not apply to Integer type.

Use: @Range

@Column(name= "discount_percentage")
@Range(min=0, max=90)
private Integer discountPercentage = 0;

Or you cloud also use only @Max or @Min and that will work too. For more info please take a look on this link.

edited May 03 '18 at 17:36

answered May 03 '18 at 17:31

Amit Bera

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2

Note that @Range is found in `org.hibernate.validator.constraints`, and not in `javax.validation.constraints` – jumping_monkey Mar 24 '20 at 09:40

score 13 · Answer 2 · answered May 03 '18 at 17:31

@Size is not used to validate min/max.

It's used to validate size of collections, length of strings, etc.

In this case you should use @Min, @Max instead.

Refer here for complete document: https://docs.oracle.com/javaee/7/api/javax/validation/constraints/Size.html

score 0 · Answer 3 · answered Nov 24 '22 at 07:53

I have observed this pattern when, the parameter type does not match with validator. as here List<String> is not matiching List<Long>

Ex Validator:

public class MaxValidation implements ConstraintValidator<MaxParameterSize, List<String>> {
  ....
 }

Annotation Use :

    public Response abc(@NotNull @MaxParameterSize(10) List<Long> parcelIds { 
    ....
    }

No validator could be found for constraint 'javax.validation.constraints.Size'

3 Answers3