Spring 4 @Injection?

Hi
I want to integrate @Injection in Spring4, but after reading various manuals, I can not.
For example - looked here.
https://vaadin.com/wiki/-/wiki/Main/Spring%20Integration


Tell me, what am I doing wrong?
Injection does not work (null).

@Configuration
@ComponentScan("com.jdev.blog.admin")
@Slf4j
public class AppConfig {}

Service

@Service @Slf4j public class UserService {} UI

public class TagsPanel extends Panel implements Property.ValueChangeListener {

    private static final long serialVersionUID = 1L;

    private Table tagsTable = new Table("Tags");
    final Label current = new Label("Selected: -");
    
    @Inject
    private UserService userService;
    

    public TagsPanel() {

        initLayout();
        
    }

..........

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    <display-name>Vaadin Web Application</display-name>

    <context-param>
        <description>Vaadin production mode</description>
        <param-name>productionMode</param-name>
        <param-value>true</param-value>
    </context-param>

    <context-param>
        <param-name>contextClass</param-name>
        <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
    </context-param>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>com.jdev.blog.admin.config.AdminConfig</param-value>
    </context-param>


    <servlet>
        <servlet-name>Vaadin</servlet-name>
        <servlet-class>com.vaadin.server.VaadinServlet</servlet-class>
        <init-param>
            <description>Vaadin UI to display</description>
            <param-name>UI</param-name>
            <param-value>com.jdev.blog.admin.AdminPanelMain</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>Vaadin</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>