Why is @PrePersist is not being invoked in Hibernate 5.2?

Question

I just recently moved from Hibernate4 to Hibernate5. I have implemented @PrePersist on my entity bean but @PrePersist doesn't seem to be firing up.

I have searched around https://github.com/hibernate/hibernate-orm/wiki/Migration-Guide---5.2

And on it it states

org.hibernate.SessionFactory now extends javax.persistence.EntityManagerFactory - temporarily it technically extends org.hibernate.jpa.HibernateEntityManagerFactory (which in turn extends javax.persistence.EntityManagerFactory) for backwards compatibility. HibernateEntityManagerFactory is deprecated.

So this means JPA annotation should work right?

My entity class looks like this

@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 configuration)

<!-- 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>

Questions

1. Something wrong with how I implement @Prepersist?

2. Or perhaps my Hibernate configuration has some error?

Thank you