Spring @Resource注入抽象类getter返回null

Question

我有一个带有我运行的测试用例的pb。我通过一个接口设置了一个obj。在接口和类之间是一个抽象类，其中obj的getter是。当我为该obj调用getter时。它返回null .......？我认为它是代理obj的东西，但我不知道代理obj如何工作

   public interface RequestHandler{
        public void setRequest(ImporterRequest request);}



   public abstract class AbstractRequestHandler implements RequestHandler{

     private ImporterRequest request;

     public ImporterRequest getRequest() {
    return request;
  }

     @Override
  public void setRequest(ImporterRequest request) {
      this.request = request;
  }




  @Component("WBRequestHandler")
  @Scope(value= "prototype", proxyMode = ScopedProxyMode.TARGET_CLASS)
  public class WBRequestHandler extends AbstractRequestHandler implements  RequestHandler{ 
       // here only implemented methods from the AbstrcCllass for read/write csv 

        @Override
    public List<Object> getData(ExportRequest request1) {...}        
        @Override
    public CellProcessor[] createExportCellProcessor(ExportRequest request1) {...}
        @Override
    protected void parseLines(CsvPreference preferences, StringReader reader,
        LngDTO LngDTO, String username) throws IOException {....}
        @Override
    protected CellProcessor[] createProcessors(ImporterRequest request1) {.....}

    }





  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(locations = { "/META-INF/spring-config.xml" })
  public class Test{

    @Resource
private RequestHandler WBRequestHandler;

    @Resource
private ImporterFactory importerFactoryImpl;

    @Test
@Transactional
public void CSVReadTest() {
         //the importerRequest obj is a simple one - non-annotated  
         ImporterRequest ir = new ImporterRequest();    

         ir.setImportTyp(RequestTyp.Artikel); 

         //this instantiation works, i made a test case for a export file with the same line  
         WBRequestHandler = importerFactoryImpl.getHandler(ir);

         WBRequestHandler.setRequest(ir);

         //in the test the req is null, 
         ImporterRequest req = ((AbstractRequestHandler) WBRequestHandler).getRequest(); 


       }

    }