CODEWITHSUNDEEP
javaspringhibernatebean-validation
Lucas. D
Lucas. D

Reputation: 505

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

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.

Upvotes: 32

Views: 70022

Answers (3)

Shashank.gupta40
Shashank.gupta40

Reputation: 945

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 { 
    ....
    }

Upvotes: 1

Amit Bera
Amit Bera

Reputation: 7235

@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.

Upvotes: 47

Mạnh Quyết Nguyễn
Mạnh Quyết Nguyễn

Reputation: 18235

@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

Upvotes: 16

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