Como integrar o JSF 2.0 com o Spring?

@RequestScoped  //javax.faces.bean.RequestScoped
@ManagedBean( name = "productBean" )  //javax.faces.bean.ManagedBean
public class ProductManagedBean {

	@Autowired  //org.springframework.beans.factory.annotation.Autowired
	private ProductService productService;  // não está fazendo a injeção
	
	private Product product;
        
        // operações
}

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:ws="http://jax-ws.dev.java.net/spring/core" xmlns:wss="http://jax-ws.dev.java.net/spring/servlet"
	xmlns:p="http://www.springframework.org/schema/p"
	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
           http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://jax-ws.dev.java.net/spring/core
	       http://jax-ws.dev.java.net/spring/core.xsd
    	   http://jax-ws.dev.java.net/spring/servlet
		   http://jax-ws.dev.java.net/spring/servlet.xsd
           ">

	<context:property-placeholder location="classpath:/jdbc.properties" />

	<!-- 
	<aop:aspectj-autoproxy />
	 -->

	<!-- Indica ao spring que os beans estao representados por anotacoes -->
	<context:annotation-config />

	<!-- Configuracao do DataSource	-->
	<bean id="pgDataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource"
		p:url="${url}"
		p:driverClassName="${driverClassName}" 
		p:username="${username}"
		p:password="${password}" />

	<!--
		Gerencia as PersistenceUnits do JPA. Neste local deve ser indicado
		onde estao os arquivos que configuram as PersistenceUnits
	-->
	<bean id="persistenceUnitManager"
		class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
		<property name="defaultDataSource" ref="pgDataSource" />
	</bean>

	<!-- Gerenciador da criacao e manutencao dos EntityManager -->
	<bean id="entityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="persistenceUnitManager" ref="persistenceUnitManager" />
		<property name="persistenceUnitName" value="devlp"/>
		<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml" />
		<property name="jpaVendorAdapter">
            <bean
                class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="database" value="POSTGRESQL" />
                <property name="showSql" value="true" />
            </bean>
        </property>
	</bean>
	
	<!-- Gerenciador das transacoes dos servicos -->
	<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory" />
	</bean>
	
	<!--
		Indica ao spring que as transacoes serao demarcadas com anotacoes e
		aponta qual eh o gerenciador das transacoes
	-->
	<tx:annotation-driven transaction-manager="transactionManager" />
	
	<context:component-scan base-package="com.monteirosti" />
	
</beans>

@Transactional                      //org.springframework.transaction.annotation.Transactional
@Service( "productService" )  //org.springframework.stereotype.Service
public class ProductServiceBean implements ProductService {

	@PersistenceContext      // já tentei assim também e nada @PersistenceContext( unitName = "devlp" )
	private EntityManager em;

}