@Autowired em filtro

@Named
@Scope("session")
public class LoginBean {

@Component("filtroAutenticacao")
public class FiltroAutenticacao implements Filter {
    //always null
    @Autowired
    private LoginBean loginBean;

 <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
  </servlet-mapping>
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
                classpath:spring-beans.xml
                classpath:spring-data.xml
    </param-value>
  </context-param>
     <filter>
      <filter-name>filtroAutenticacao</filter-name>
      <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>

    <filter-mapping>
      <filter-name>filtroAutenticacao</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
  </welcome-file-list>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>