通过类型为[java.lang.Class]的索引0的构造函数参数表示的不满意的依赖性

嗨,大家好我用hibernate和spring创建了一个简单的web应用程序,我想实现一个包含crud操作的抽象类,但是我有这个错误：

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientService' defined in class path resource [applicationContext.xml]: 
Cannot resolve reference to bean 'clientDao' while setting bean property 'clientDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'clientDao' defined in class path resource [applicationContext.xml]: 
Unsatisfied dependency expressed through constructor argument with index 0 of type [java.lang.class]: 

GenericDao

public interface GenericDao

}

GenericDaoImpl

@Transactional
public  class GenericDaoImplsuper();
}

    public GenericDaoImpl(Classsuper();
    this.persistentClass = persistentClass;
}

    @Transactional
    public T save(T entity) {
        this.sessionFactory.getCurrentSession().save(entity);
        return null;
    }

    @Transactional
    public T update(T entity) {
        this.sessionFactory.getCurrentSession().update(entity);
        return null;
    }

    @Transactional
    public void delete(T entity) {
        this.sessionFactory.getCurrentSession().delete(entity);

    }

    @SuppressWarnings("unchecked")
    @Transactional
    public T findById(ID id) {
        return  (T) this.sessionFactory.getCurrentSession().load(this.getPersistentClass(),id);

    }
    @SuppressWarnings("unchecked")
    @Transactional
    public Listcreatequery("* from"+this.getPersistentClass().getSimpleName()).list();
    }

    @Transactional
    public void flush() {
        this.sessionFactory.getCurrentSession().flush();

    }

    public SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    public Class

ClientDao

public interface ClientDao  extends GenericDao

ClientDaoImpl

@Transactional
@Repository("clientDao")
public class ClientDaoImpl extends GenericDaoImpl

application context.xml

最佳答案

使用：

Spring会将字符串“强制转换”为类.然后,您可以从XML中删除客户端bean.

或者从ClientDaoImpl中删除此参数,因为它没用(它只能是这种类型,因此没有理由将其作为参数)

public ClientDaoImpl() {
    super(com.xxx.Client.class);
}

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