java - Bean 验证不起作用。我正在使用 JPA 2.0 和 Hibernate 3.3

Question

验证适用于前端(jsf)。然而，它尚未在 prepersist 上得到验证。我将制造商设置为 null，并将其存储在数据库中，而不是抛出约束违规异常。谢谢。

这是我的实体的相关部分:

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.AssertTrue;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;


/**
 * The persistent class for the CAR database table.
 * 
 */
@Entity
@Table(name="CAR")
public class Car implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="CAR_ID")
    private int carId;

    @Column(name="MANUFACTURER")
    @NotNull(message = "A manufacturer is required.")
    private String manufacturer;

这是我的 persistence.xml 文件:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
    <persistence-unit name="src_persistence">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>jdbc/BEAN_VALIDATION_DS</jta-data-source>
        <class>
            xxx.beanvalidation.persistence.Car
        </class>
        <validation-mode>CALLBACK</validation-mode>
        <properties>
            <property name="javax.persistence.validation.mode" value="callback"/>
            <property name="openjpa.Optimistic" value="false"/>
            <property name="openjpa.LockManager" value="none"/>
            <property name="openjpa.jdbc.Schema" value="dbo"/>
            <property name="hibernate.transaction.factory_class" value="org.hibernate.transaction.CMTTransactionFactory" />
            <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WebSphereExtendedJTATransactionLookup" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect" />
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.current_session_context_class" value="thread" />
            <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider" />
        </properties>
    </persistence-unit>
</persistence>

这是我的 DAO:

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import com.westfieldgrp.beanvalidation.persistence.Car;
import com.westfieldgrp.beanvalidation.persistence.Driver;
import com.westfieldgrp.beanvalidation.persistence.Person;
import com.westfieldgrp.common.data.dao.DAOInterface;

public class CarDAO  {

    private EntityManager entityManager;


    public void save(Person convertedPerson, Driver convertedDriver, Car convertedCar) {
        EntityManager em = getEntityManager();
        //convertedPerson.setName(convertedPerson.getName()); // To test JPA validation
        Person savedPerson =  em.merge(convertedPerson);
        convertedDriver.setPersonId(savedPerson.getPersonId());
        Driver savedDriver = em.merge(convertedDriver);
        convertedCar.setDriverId(savedDriver.getPersonId());
        if("test".equals(convertedCar.getManufacturer())){
            convertedCar.setManufacturer(null);// To test JPA validation
        }
        em.persist(convertedCar);
        em.flush();
    }

    public EntityManager getEntityManager() {
            EntityManagerFactory emf = Persistence.createEntityManagerFactory("src_persistence");
            entityManager = emf.createEntityManager();
        return entityManager;
    }

    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }
}

Answer 1

Hibernate 3.3 不是 JPA2.0 实现。 JPA2.0 需要 Hibernate >=3.5.1。Hibernate 3.3 中没有集成 bean-validation API

要将 bean-validation 集成到 hibernate 3.3 中，您必须实现 BeanValidationEventListener。以 Hibermate 实现为例:

https://github.com/hibernate/hibernate-orm/blob/master/hibernate-core/src/main/java/org/hibernate/cfg/beanvalidation/BeanValidationEventListener.java