Spring MVC+；Hibernate：未知实体

我是Java世界的新手，特别是在春天。我试着读了很多教程，但我真的很困惑。 我创建了一些通过注释映射的实体，当我在一个主类中加载我的应用程序上下文时，我成功地将其持久化，但我不能在我的控制器中这样做

@Entity
@Table(name = "User")
public class User implements Serializable{

    @Id
    @GeneratedValue
    @Column(name = "id_user")
    private Long idUser;

    @Column(name = "first_name", nullable=false)
    private String firstName;

    @Column(name = "last_name", nullable=false)
    private String lastName;

    @Column(name = "email", nullable=false)
    private String email;

    @Column(name = "password", nullable=false)
    private String password;

    @Column(name = "birth")
    private Date birth;

    @Column(name = "avatar")
    private String avatar;

...



}

我必须让sur使用javax.persistence

在dispachtcherservlet中，我加载spring-context.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scan base-package="com.manager.spring" />

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/view/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>


    <mvc:resources mapping="/resources/**" location="/resources/" />
    <mvc:annotation-driven />

    <import resource="classpath*:spring-config.xml" />

</beans>

还有我的UserDAO

@Component("userDAO")//This the id by which it will be auto wired
public class UserDAO extends BaseDAO{

       public void create(User user){
           try{
                getSession().save(user);
            }
            catch(HibernateException e){
                System.out.println("Error occured while saving data"+e.getMessage());
            }
       }


}

BaseDAO：

public class BaseDAO {

    @Resource(name="sessionFactory")
    protected SessionFactory sessionFactory;

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

    protected Session getSession(){
           return sessionFactory.openSession();
    }     
}

当我在一个主类中创建一个用户时，这个配置正在运行

 ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[]{"spring-config.xml"});

  UserService userSvc = (UserService) ctx.getBean("userSvc");
  userSvc.create(user);

但是当我尝试在控制器中创建用户时，我得到了一个异常

Error occured while saving dataUnknown entity: com.manager.spring.entity.User

我真的希望有人能帮助我，我不一定什么都懂，我很抱歉我的英语不好！

---

Thx

您显示了

事件

实体，但它却抱怨您的

用户

实体。噢，该死！对不起，我已经编辑过了。

spring config.xml

是指

spring context.xml

，还是反之亦然？我还想看

BaseDAO

。我真的不知道。。。我觉得我对春天很困惑。。。我在这个问题上添加BaseDao。

 ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[]{"spring-config.xml"});

  UserService userSvc = (UserService) ctx.getBean("userSvc");
  userSvc.create(user);

Error occured while saving dataUnknown entity: com.manager.spring.entity.User