I have an EJB application on JBoss AS 7.1.1, that use Hibernate 4.3 for database connection via jta-data-source. My persistence.xml:
<?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="primary" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:/postds</jta-data-source>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.ProgressDialect" />
<property name="hibernate.connection.charSet" value="UTF-8" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="false" />
</properties>
</persistence-unit>
</persistence>
I use DAO pattern like this:
@Stateless
public abstract class GenericHibernateDAO<T, ID extends Serializable>
implements GenericDAO<T, ID> {
private Class<T> persistentClass;
@PersistenceContext
private EntityManager em;
protected Session getSession() {
return em.unwrap(Session.class);
}
public T save(T entity) {
getSession().saveOrUpdate(entity);
return entity;
}
...
In EJB backend all Lazy-initialized fields work fine. Now I need a small web admin panel for my backend. I am familiar with Spring MVC and decided use it. In Spring MVC is not a problem use EJB beans. But Lazy-initialized fields don't work in Spring controllers and I get:
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
I tried to use OpenSessionInViewFilter in web.xml:
<filter>
<filter-name>openSessionFilter</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionFilter</filter-name>
<url-pattern>/admin/*</url-pattern>
</filter-mapping>
OpenSessionInViewFilter needs sessionFactory bean. I added it's definition into applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-3.2.xsd">
<jee:jndi-lookup id="dataSource" jndi-name="java:/postds"/>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
But it did not solve my problem... Have you any advice? Thanks a lot!
