title: Problem with Autowiring & No unique bean
body: <p>I have 2 classes (B,C) extends class A.</p>
  
  <pre><code>@Service
  public class A  extends AbstratClass&lt;Modele&gt;{
  
      @Autowired
      A(MyClass  br) {
          super(br);
      }
  
  
  @Service
  public class B  extends A{
  
    @Autowired
    B (MyClass  br) {
       super(br);
    }
  
  
  
  @Service
  public class C  extends A{
  
    @Autowired
    C (MyClass  br) {
       super(br);
    }
  </code></pre>
  
  <p>But i have this message:</p>
  
  <blockquote>
    <p>No unique bean of type [A] ] is defined: expected single matching bean but found 2: [A, B, moveModeleMarshaller]</p>
  </blockquote>
  
  <p>I really cant get why i have this message &amp; how to resolve even after reading Spring documentation.</p>
  
  <p>Thanks in advance.</p>