java - 在注入(inject)点[BackedAnnotatedField]中带有限定符@Default的类型“Interface”的依赖关系未满足@Inject“Implementation”

我想在Maven项目中使用CDI + JSF + HIBERNATE + PRIMEFACES的实现。
我的pom.xml是这样的：

    <dependencies>
    <!-- PROJECT LOMBOK -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.16.6</version>
        <scope>provided</scope>
    </dependency>
    <!-- MYSQL -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.9</version>
    </dependency>
    <!-- HIBERNATE -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>3.6.3.Final</version>
    </dependency>
    <!-- CDI -->
    <dependency>
        <groupId>javax.enterprise</groupId>
        <artifactId>cdi-api</artifactId>
        <version>1.2</version>
    </dependency>
    <!-- SLF4j -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.7.12</version>
    </dependency>
    <!-- PRIMEFACES -->
    <dependency>
        <groupId>org.primefaces</groupId>
        <artifactId>primefaces</artifactId>
        <version>5.2</version>
    </dependency>
</dependencies>

我的项目结构是这样的，当我在不同的Class中实现时，我使用通用接口。
我在3类中实现的一个接口
IGenericDAO像这样在UserDao + PersonDao + RoleDao中实现它

public interface IGenericDAO<T> {

void save(T object);

void update(T object);

T getObjectById(int id);

List<T> getAll();  }

实现是

public class UserDAOImpl implements IGenericDAO<User> {

@Override
public void save(User user) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    Transaction transaction = null;
    try {
        transaction = session.beginTransaction();
        session.save(user);
        transaction.commit();
    } catch (Exception e) {
        if (transaction != null)
            transaction.rollback();
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@Override
public void update(User user) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    Transaction transaction = null;
    try {
        transaction = session.beginTransaction();
        session.update(user);
        transaction.commit();
    } catch (Exception e) {
        if (transaction != null)
            transaction.rollback();
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@Override
public User getObjectById(int id) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    try {
        return (User) session.createCriteria(User.class).add(Restrictions.eq("id", id)).list().get(0);
    } catch (Exception e) {
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@SuppressWarnings("unchecked")
@Override
public List<User> getAll() {
    Session session = HibernateUtil.getSessionFactory().openSession();
    try {
        return session.createCriteria(User.class).list();
    } catch (Exception e) {
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}}

像这样我将服务编写到代码中，使用通用接口，并在3个类中实现代码，如下所示：

public interface IGenericService<T> {

void save(T object);

void update(T object);

T getObjectById(int id);

List<T> getAll(); }

实施

@RequestScoped
public class UserServiceImpl implements IGenericService<User> {
@Setter
@Inject
private IGenericDAO<User> dao;

@Override
public void save(User user) {
    dao.save(user);
}

@Override
public void update(User user) {
    dao.update(user);
}

@Override
public User getObjectById(int id) {
    return dao.getObjectById(id);
}

@Override
public List<User> getAll() {
    return dao.getAll();
}}

最后，ManagedBean是这样的：

@Named(value = "authentication")

@RequestScoped
公共类AuthenticationBean实现Serializable {

private static final long serialVersionUID = 2288439665206779666L;

@Getter
@Setter
private String message;

@Setter
@Inject
private IGenericService<User> userService;

@PostConstruct
public void init() {
    message = userService.getObjectById(1).getLastname();
}}

每次我运行glassfish服务器时，我都会遇到以下错误：
 异常0：
org.jboss.weld.exceptions.DeploymentException：WELD-001408：使用限定符@Default的IGenericDAO类型的依赖关系未得到满足
  在注入点[BackedAnnotatedField] @Inject私有ma.salaried.service.impl.PaymentServiceImpl.dao

最佳答案

我通过在DAO的实现和od的实现中添加@RequestScoped来解决此问题（在我所有的DAO IMPL和Service Impl中）

@RequestScoped public class EmployeeDAOImpl implements IGenericDAO<Employee> {

@Override
public void save(Employee Employee) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    Transaction transaction = null;
    try {
        transaction = session.beginTransaction();
        session.save(Employee);
        transaction.commit();
    } catch (Exception e) {
        if (transaction != null)
            transaction.rollback();
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@Override
public void update(Employee Employee) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    Transaction transaction = null;
    try {
        transaction = session.beginTransaction();
        session.update(Employee);
        transaction.commit();
    } catch (Exception e) {
        if (transaction != null)
            transaction.rollback();
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@Override
public Employee getObjectById(int id) {
    Session session = HibernateUtil.getSessionFactory().openSession();
    try {
        return (Employee) session.createCriteria(Employee.class).add(Restrictions.eq("id", id)).list().get(0);
    } catch (Exception e) {
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

@SuppressWarnings("unchecked")
@Override
public List<Employee> getAll() {
    Session session = HibernateUtil.getSessionFactory().openSession();
    try {
        return session.createCriteria(Employee.class).list();
    } catch (Exception e) {
        throw e;
    } finally {
        session.close();
        HibernateUtil.getSessionFactory().close();
    }
}

}

并在这样的服务中

@RequestScoped
公共类EmployeeServiceImpl实现IGenericService {

@Setter
@Inject
private IGenericDAO<Employee> dao;

@Override
public void save(Employee Employee) {
    dao.save(Employee);
}

@Override
public void update(Employee Employee) {
    dao.update(Employee);
}

@Override
public Employee getObjectById(int id) {
    return dao.getObjectById(id);
}

@Override
public List<Employee> getAll() {
    return dao.getAll();
}}