Question

我刚刚从Hibernate4迁移到Hibernate5。我已经在我的实体bean上实现了@PrePersist，但是@PrePersist似乎并未启动。

我已经四处寻找了 https://github.com/hibernate/hibernate-orm/wiki/Migration-Guide---5.2

并在其上声明

org.hibernate.SessionFactory现在扩展了javax.persistence.EntityManagerFactory - 暂时它在技术上扩展了org.hibernate.jpa.HibernateEntityManagerFactory（后者又扩展了javax.persistence.EntityManagerFactory）以实现向后兼容。不推荐使用HibernateEntityManagerFactory。

那么这意味着JPA注释应该正常吗？

我的实体类看起来像这样

@Entity
@Table(name="books")
@Component
public class Book implements Serializable{

private static final long serialVersionUID = -2042607611480064259L;

@Id
@GeneratedValue
private int id;

@NotBlank
private String name;

@NotBlank
@Size(min=2, max=16)
private String ispn;

@DecimalMin(value = "0.1")
private double price;


private Timestamp dateCreated;

private Date datePublished;

@PrePersist
public void beforePersist() {
     System.out.println("@PrePersist is called");
    this.dateCreated = Timestamp.from(Instant.now());

}

applicationContext.xml（Hibernate配置）

<!-- Connection Pool -->
<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
        <property name="poolName" value="springHikariCP" />
        <property name="connectionTestQuery" value="SELECT 1" />
        <property name="dataSourceClassName"
            value="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" />
        <property name="dataSourceProperties">
            <props>
                <prop key="url">jdbc:mysql://localhost:3306/sample</prop>
                <prop key="user">sample</prop>
                <prop key="password">sample</prop>
            </props>
        </property>
    </bean>

    <bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource"
        destroy-method="close">
        <constructor-arg ref="hikariConfig" />
    </bean>



    <bean id="transactionManager"
        class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>


    <!-- Hibernate Settings -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.id.new_generator_mappings">false</prop>
                <prop key="hibernate.jdbc.time_zone">UTC</prop>
                <prop key="hibernate.connection.useUnicode">true</prop>
                <prop key="hibernate.connection.characterEncoding">UTF-8</prop>
                <prop key="hibernate.connection.charSet">UTF-8</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="org.hibernate.jdbc">TRACE</prop>
            </props>

        </property>

        <property name="packagesToScan">
            <list>
                <value>com.app.books</value>
            </list>
        </property>
    </bean>

问题

我实施@Prepersist的方式出了什么问题？
或许我的Hibernate配置有一些错误？

谢谢

为什么在Hibernate 5.2中没有调用@PrePersist？

0 个答案: