(转)Validations in Spring

Configure Validator Bean in Spring

You can configure a Validator bean by yourself. By default, it uses HibernateValidator.class, there are other options like ApacheValidationProvider.class.

A benefit of configuring it is to make it fail fast.

In failFast mode, it throws an exception on the first violation.

@Bean
public Validator validator() {
    ValidatorFactory validatorFactory = Validation.byProvider( HibernateValidator.class)
        .configure()
        .failFast(true)
        .buildValidatorFactory();
    return validatorFactory.getValidator();
}

ValidatorFactory validatorFactory = Validation.byProvider( HibernateValidator.class )
        .configure()
        .addProperty( "hibernate.validator.fail_fast", "true" )
        .buildValidatorFactory();
    return validatorFactory.getValidator();

09. Service layer validation needs both @Validate and @Valid

@Service
@Validated
class ValidatingService{

    void validateInput(@Valid DTO dto){
      // do something
    }
}

https://mossgreen.github.io/Validations-in-Spring/