[Spring Boot Validataion] Spring Boot Validataion

Spring Boot Validation

Usages

UUID Validataion

Define a UUID Validataion.

import javax.validation.Constraint;
import javax.validation.Payload;
import javax.validation.constraints.Pattern;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Pattern(regexp="^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$", message = "Not a valid UUIDPattern")
@Retention(RUNTIME)
@Target({FIELD, METHOD, PARAMETER})
@Constraint(validatedBy = {})
@Documented
public @interface UUIDPattern {
    String message() default "{invalid.uuid}";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

Example

public class User {
    @Id
    @GeneratedValue
    @UUIDPattern
    protected UUID id;
}

java - Is there a uuid validator annotation? - Stack Overflow - https://stackoverflow.com/questions/37320870/is-there-a-uuid-validator-annotation

Java validator for UUIDs - https://gist.github.com/mindhaq/ffc3378a271cb7e91b3819ff1abb675c

FAQs

HV000030: No validator could be found for constraint ‘javax.validation.constraints.Pattern’ validating type ‘java.util.UUID’.

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

TODO.

References

Validation with Spring Boot - the Complete Guide - Reflectoring - https://reflectoring.io/bean-validation-with-spring-boot/

[1] Validation in Spring Boot | Baeldung - https://www.baeldung.com/spring-boot-bean-validation