BeanValidationDiegoArmandoGómez

Mosqueradgomez@vortexbird.com

2017

QueesBean Validation

• EspecificacióndesarrolladorporelJavaCommunity Process.

• SufunciónesvalidarJavaBeans sebasaenelusodeanotaciones.

• Bean Validation 1.0JSR303• Bean Validation 1.1JSR349• Bean Validation 2.0JSR380

Escenariodevalidaciones

AnotacionesAnotación Ejemplo@AssertFalse @AssertFalse

boolean isUnsupported;

@AssertTrue @AssertTrueBoolean isActive;

@DecimalMax @DecimalMax("30.00")BigDecimalDiscount;

@DecimalMin @DecimalMin("5.00")BigDecimal discount;

@Digits @Digits(integer=6,fraction=2)BigDecimal price;

@FutureDate @FutureDateeventDate;

@Max @Max(10)int quantity;

AnotacionesAnotación Ejemplo@Min @Min(5)

int quantity;

@NotNull @NotNullString username;

@Null @NullString unusedString;

@Past @PastDatebirthday;

@Pattern @Pattern(regexp="\\(\\d{3}\\)\\d{3}-\\d{4}")String phoneNumber;

@Size @Size(min=2,max=240)String briefMessage;

EntidadconAnotacionespublic class Clientes implements java.io.Serializable {

@NotNullprivate long cliId;@NotNullprivate TiposDocumentos tiposDocumentos;@NotNull@Size(min = 1, max = 50)private String cliNombre;@NotNull@Size(min = 1, max = 50)private String cliDireccion;@NotNull@Size(min = 1, max = 50)private String cliTelefono;@NotNull@Size(min = 1, max = 50)private String cliMail;

}

Usandoelvalidador

Set<ConstraintViolation<Clientes>> constraintViolations =validator.validate(clientes);log.info(""+constraintViolations.size());

SpringyBean Validation

• Implementacióndejavax.validation.Validator• LocalValidatorFactoryBean implementacióndesarrolladaporelgrupodeSpring

• SepuedeconfigurarenapplicationContext.xml

<bean id="validator"class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"/>

TallerimplementarBeanValidation

• Registraranotacionesenlosentity• ConfigurarelLocalValidatorFactoryBean• Injectar Validator• Ejecutarvalidate• RevisarlalistadeConstraintViolation

HibernateValidator

<dependency><groupId>org.hibernate</groupId><artifactId>hibernate-validator</artifactId><version>5.4.1.Final</version>

</dependency>

<dependency><groupId>org.glassfish</groupId><artifactId>javax.el</artifactId><version>3.0.1-b08</version>

</dependency>

applicationContext.xml<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:jpa="http://www.springframework.org/schema/data/jpa"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/data/jpahttp://www.springframework.org/schema/data/jpa/spring-jpa-1.8.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

<bean id="validator"class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"/>

</beans>

InyectarValidator

import javax.validation.ConstraintViolation;import javax.validation.Validator;

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Service;

@Service@Scope("singleton")public class ClientesLogica implements IClientesLogica{

@Autowiredprivate Validator validator;

}

Métodoparavalidar@Autowiredprivate Validator validator;

public void validarClientes(Clientes clientes) throws Exception {try {

Set<ConstraintViolation<Clientes>> constraintViolations = validator.validate(clientes);

if (constraintViolations.size() > 0) {StringBuilder strMessage = new StringBuilder();

for (ConstraintViolation<Clientes> constraintViolation : constraintViolations) {strMessage.append(constraintViolation.getPropertyPath().toString());strMessage.append(" - ");strMessage.append(constraintViolation.getMessage());strMessage.append(". \n");

}

throw new Exception(strMessage.toString());}

} catch (Exception e) {throw e;

}}

Informacióndecontacto

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