CDI：WELD-001408不满意的依赖关系，如何解决？

本文介绍了CDI：WELD-001408不满意的依赖关系，如何解决？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我用CDI做了一个小测试项目。我的应用程序由EJB EAR和WAR组成，全部部署在Glassfish 4上。我正在使用Hibernate 4.3.4来访问数据库。

I do a small test project with CDI. My application is composed of an EJB EAR and WAR, all deployed on Glassfish 4. I'm using Hibernate 4.3.4 to access the database.

我的目标是验证EJB（DAO）中的类可以接收EntityManager的注入。

My goal is to verify that a class in an EJB (DAO) can receive an injection of an EntityManager.

模式SessionBean + EJB不是很棒，但我必须修改已经创建的应用程序我没有太多选择。

The pattern SessionBean + EJB is not fantastic but I have to modify an application already created so I do not have much choice.

这是我的EJB代码：

@Named
public class DAOTest implements Serializable {
    private static final long serialVersionUID = 1L;

    @PersistenceContext(unitName="CDI-ejb")
    private EntityManager em;

    public void test(){
        //em.getClass();
    }


    public EntityManager getEm() {
       return em;
    }


    public void setEm(EntityManager em) {
        this.em = em;
    }

    public DAOTest() {
        // TODO Auto-generated constructor stub
    }

}

Service.java

@Stateless
@LocalBean
public class Service implements ServiceLocal {

    @Inject DAOTest test;
    /**
    * Default constructor.
    */
    public Service() {
        // TODO Auto-generated constructor stub
    }


    @Override
    public void test() {
        test.test();

    }


}

和ServiceLocal.java

and ServiceLocal.java

@Local
public interface ServiceLocal {
    void test();
}

在我的战争中：

@WebServlet("/Test")
public class Test extends HttpServlet {
    private static final long serialVersionUID = 1L;
    @Inject private ServiceLocal service;

    /**
    * @see HttpServlet#HttpServlet()
    */
    public Test() {
        super();
        // TODO Auto-generated constructor stub
    }


    /**
    * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
    */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        service.test();
    }


    /**
    * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
    */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
    }


 }

我通过使用@Stateless注释对其进行注释来测试DAOTest。一切都按照预期发生。所以CDI效果很好。但只有@ Named它不想工作。

I tested the DAOTest by annotating it with @ Stateless annotation. Everything happens as it should. So CDI works well. But with just @ Named it does not want to work.

任何想法？

stacktrace：

The stacktrace:

org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [DAOTest] with qualifiers [@Default] at injection point [[BackedAnnotatedField] @Inject test.Service.test]

My beans.xml

<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>

WELD

CDI：WELD-001408不满意的依赖关系，如何解决？

问题描述

推荐答案