Validation error: “No validator could be found for type: java.lang.Integer”

Question

I am working on a project with Spring why do I keep getting the following error?

javax.validation.UnexpectedTypeException:
No validator could be fou

Answer 1

As stated in problem, to solve this error you MUST use correct annotations. In above problem, @NotBlank or @NotEmpty annotation must be applied on any String field only.

To validate long type field, use annotation @NotNull.