Need help with DI

[SpringingHamster]

Hello,

I try to use the dependency injection of spring but only get a NullPointerException. I had never worked before with spring, have nobody to ask here, tryed a lot for the last 5 hours and really need help.

I want to do is really simple. I have got a JSF page where I want to show a list of users. I made a service api (a project which now only has one interface in it) and a mock implementation which gives me list of dummy users. A database connectivity will be implemented later.

Here is the code:
UserBean in the webproject where the userservice will be injected:

@ManagedBean
@SessionScoped
public class UserBean implements Serializable {
	@Inject
	private UserService userService;

...
getUsers()
getUserById()
deleteUser()
...

UserService is a easy interface:

public interface UserService {
	public List<User> getUsers();
	public User getUserByUsername(String username);
...

The mock implementation is this here:

@Component
public class UserServiceMockImpl implements UserService {
private final List<User> dummyUsers = new ArrayList<User>();
...

I added this into the web.xml:

<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/application-context.xml
		</param-value>
	</context-param>
	
	<listener>
    	<listener-class>
          org.springframework.web.context.ContextLoaderListener
    	</listener-class>
  	</listener>
  
  	<listener>
		<listener-class>
			org.springframework.web.context.request.RequestContextListener
 		</listener-class>
	</listener>

And created a application-context.xml which included this:

<?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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">

	<context:component-scan base-package="path.to.service" />

</beans>

The server.log told me that:

INFO: PWC1412: WebModule[null] ServletContext.log():Closing Spring root WebApplicationContext
INFO: Closing Root WebApplicationContext: startup date [Fri Jan 20 11:07:43 CET 2012]; root of context hierarchy
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@e2f0803: defining beans [userServiceMockImpl,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; root of factory hierarchy

INFO: PWC1412: WebModule[null] ServletContext.log():No Spring WebApplicationInitializer types detected on classpath
INFO: Mojarra 2.1.3 (FCS b02) f�r Kontext '/MyApp' wird initialisiert.
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Monitoring jndi:/server/MyApp/WEB-INF/faces-config.xml for modifications
INFO: PWC1412: WebModule[null] ServletContext.log():Initializing Spring root WebApplicationContext
INFO: Root WebApplicationContext: initialization started

INFO: Refreshing Root WebApplicationContext: startup date [Fri Jan 20 12:00:16 CET 2012]; root of context hierarchy
INFO: Loading XML bean definitions from ServletContext resource [/WEB-INF/application-context.xml]
INFO: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning

INFO: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@38205c30: defining beans [userServiceMockImpl,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; root of factory hierarchy
INFO: Root WebApplicationContext: initialization completed in 734 ms
INFO: WEB0671: Loading application [MyApp] at [/MyApp]
INFO: MyApp was successfully deployed in 1.476 milliseconds.

I really tryed a lot. The way via XML, different Annotations, ...........
What made I wrong?