Injection of the sessionFactory not working - spring

Question

I'm new with Spring and I want to inject the sessionFactory and its not working at all. I'm starting a web server Jetty and then I load the context. After i start a GWT web application, I make a call on the server side and I try to get some info but I get a null pointer. There is no error at all so it make it difficult to know where the problem is. I know its suppose to work because I saw it working on a project I worked on some times ago. Any help will be appreciate. (Sorry for my possibly bad english)
Here is the context.xml :
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema
/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema
/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema
/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema
/security/spring-security-3.0.xsd">
<!-- Standard spring initialization -->
<context:component-scan base-package="com.test">
</context:component-scan>
<tx:annotation-driven transaction-manager="txManager"/>
<!-- Connection to the database-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-
method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/test" />
<property name="username" value="root" />
<property name="password" value="123456789" />
</bean>
<!-- Hibernate session factory-->
<bean id="jpaSessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.domain"/>
<property name="namingStrategy" >
<bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<!-- Hibernate session factory -->
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="jpaSessionFactory" />
</bean>
</beans>
Here is the main :
public static void main(String[] args) {
ContextHandlerCollection contexts = new ContextHandlerCollection();
contexts.setHandlers(new Handler[]
{ new AppContextBuilder().buildWebAppContext()});
final JettyServer jettyServer = new JettyServer();
jettyServer.setHandler(contexts);
Runnable runner = new Runnable() {
#Override
public void run() {
new ServerRunner(jettyServer);
}
};
EventQueue.invokeLater(runner);
new ClassPathXmlApplicationContext("context.xml");
}
Here is the class Test where I want the injection :
#Component("test")
public class TEST{
#Resource(name="jpaSessionFactory")
private SessionFactory sessionFactory;
#SuppressWarnings("unchecked")
#Transactional(readOnly = true)
public List<Personne> getPersonnes() {
Session s = sessionFactory.getCurrentSession();
Query query = s.createQuery("from Person");
return query.list();
}
}
Here is the server side from the application (not shown completely)
/*** The server side implementation of the RPC service.
*/
#SuppressWarnings("serial")
public class GreetingServiceImpl extends RemoteServiceServlet implements
GreetingService {
#Resource
private TEST t;
public String greetServer(String input) throws IllegalArgumentException {
// Verify that the input is valid.
if (!FieldVerifier.isValidName(input)) {
// If the input is not valid, throw an IllegalArgumentException
back to
// the client.
throw new IllegalArgumentException(
"Name must be at least 4 characters long");
}
t.getPersons(); // NULL pointer here
.........................
The MySQL tables are created like it should, so all the scanning seems to work.
Thanks
Bob

Answer 1

This is because the GreetingServiceImpl class is not created by spring - it is servlet that is initialized by the container directly. Follow the instructions in this article to fix the issue. I have copied the relevant code from the article.
#Override
public void init() throws ServletException {
super.init();
final WebApplicationContext ctx =
WebApplicationContextUtils.getWebApplicationContext(getServletContext());
if (ctx == null) {
throw new IllegalStateException("No Spring web application context found");
}
ctx.getAutowireCapableBeanFactory().autowireBeanProperties(this,
AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE, true);
}