javax.validation

Un tutorial util: Spring MVC Custom Validation

Pont: se va adnota cu @Valid fiecare obiect care trebuie verificat (inclusiv in cascada, mergand pana la obiectul final ce contine adnotarea cu constrangere - cum era @ContactNumberConstraint)

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package secret***.controller;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public class RandomValidator implements ConstraintValidator<RandomConstraint, String> {

    @Override
    public void initialize(RandomConstraint contactNumber) {
    }

    @Override
    public boolean isValid(String value, ConstraintValidatorContext cxt) {
        return value != null && value.matches("[0-9]+")
                && (value.length() > 8) && (value.length() < 14);
    }
}

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package secret***.controller;

import java.lang.annotation.*;

import javax.validation.Constraint;
import javax.validation.Payload;

@Documented
@Constraint(validatedBy = RandomValidator.class)
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface RandomConstraint {
    String message() default "Invalid phone number";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

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@PostMapping("/save")
public ResponseEntity<VrDeResultDTO> save(@RequestBody @Valid ContextDTO contextDTO) {
    return new ResponseEntity<>(choreographer.save(contextDTO), HttpStatus.OK);
}

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in ContextDTO ---> toate campurile care duc la campul adnotat cu @RandomConstraint trebuie sa aiba @Valid.