MVC Controller中自动装配的bean为空

我正在尝试在MVC Controller类中自动装配一个bean，但是我无法获得另一个值，而不是null . 当我将 throw new Error("E") 放在要注入 helloWorldController bean的bean的构造函数中时，我得到一个异常：创建名为helloWorldController的bean时出错：注入自动连接的依赖项失败 . 但是当我在构造函数中运行test而没有错误时，我没有得到bean，我得到null .

我完全糊涂了 . 它有什么作用？它在创建控制器实例时尝试创建并注入依赖项 . 好的，那么为什么变量没有被反复化，如果没有发生错误？

我在Sean Patrick Floyd的竞标中延长了我的职位：

package testy.sprung;

//import declarations ommited

import testy.sprung.beany.AwiredBean;

@Controller
public class HelloWorldController {
    private Logger log = Logger.getLogger("springTestLogger");
    @Autowired
    private AwiredBean oz;

    @RequestMapping("/sprung")
    public ModelAndView base() {
        log.debug("base URI");
        ModelAndView mv = new ModelAndView();
        mv.setViewName("firstPage");
        return mv;
    }

    @RequestMapping(value="/{articel}/{subTitle}",method=RequestMethod.GET)
    public ModelAndView szia(@PathVariable("articel") String articel, @PathVariable("subTitle") String st, @RequestParam(value="co", required=false) String co) {
        log.debug("Path GET/{articel}/{subtitle}: " + articel + "/" + st + "?co=" + co);
        ModelAndView mv = new ModelAndView();
        mv.setViewName("index"); // now put index.jsp in /WEB-INF/files
        mv.addObject("articel", articel);
        mv.addObject("subtl", st);
        mv.addObject("co", co);
        mv.addObject("awir", oz); //but it is null
        return mv;
    }
}

bean实现任何空接口：

package testy.sprung.beany;

public class AwiredBeanImpl implements AwiredBean {
    @Override
    public String toString() {
        return "CommonAutowired";
    }

    public AwiredBeanImpl() {
        throw new Error("E");
    }
}

我在测试中运行它 . 测试失败，因为我的错误或 NullPointerException 被抛出：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("file:WebContent/WEB-INF/sprung-servlet.xml")
public class ZakladniExtendedTest extends TestCase {
    private MockHttpServletRequest request;
    private MockHttpServletResponse response;
    private HelloWorldController controller;
    @Inject
    private ApplicationContext context;

    public ZakladniExtendedTest() {
        PropertyConfigurator.configure("t-resources/log4j.properties");
    }

    @Before //this method is called before each test
    public void setUp() {
        request = new MockHttpServletRequest();
        response = new MockHttpServletResponse();
        controller = new HelloWorldController();
    }

    @Test
    public void testThemeResolverExists() { //this test works
        assertTrue(context.containsBean("themeResolver"));
    }

    @Test
    public void autowiringTest() throws Exception { //but this not
        request.setRequestURI("/title/subtitle");
        request.setMethod("GET");
        request.setParameter("co", "param");
        ModelAndView mav = new AnnotationMethodHandlerAdapter().handle(request, response, controller);
        String viewName = mav.getViewName();
        Map objects = mav.getModel();

        assertEquals("index", viewName);
        //NullPointerException follows:
        assertEquals("CommonAutowired", objects.get("awir").toString());
    }
}