Model view controller MVC控制器中的自动连线bean为空

我试图在MVC控制器类中自动连接一个bean，但我无法获得除null以外的其他值。当我在要注入

helloWorldController

bean的bean的构造函数中放入

throw new Error（“E”）

时，我得到一个异常：创建名为helloWorldController的bean时出错：自动连线依赖项的注入失败。但当我在构造函数中无错误地运行测试时，我没有得到bean，而是得到null

我完全糊涂了。它有什么作用？它试图在创建控制器实例时创建并注入依赖项。好的，那么如果没有发生错误，为什么变量没有被取消标记呢

我已根据肖恩·帕特里克·弗洛伊德的要求延长了我的职位：

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; } }

---

而不是

controller=newHelloWorldController（）您应该注入控制器，使其成为Spring管理的bean。
请显示控制器类和Spring配置的相关位。非常感谢。现在可以了。我把测试更新了一点。行
controller=newhelloworldcontroller（）已被删除，变量
控制器
被注释为
@Autowired
。
package testy.sprung.beany;

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

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