Java org.hibernate.MappingException:未知实体-当我使用DAL类时

我得到org.hibernate.MappingException:未知实体

实体类：

public class Event {
private long eventId;
private String eventTitle;
private Date eventDate;

public Event() {
}


/**
 * @return the eventId
 */
public long getEventId() {
    return eventId;
}

/**
 * @param eventId the eventId to set
 */
public void setEventId(long eventId) {
    this.eventId = eventId;
}

/**
 * @return the eventTitle
 */
public String getEventTitle() {
    return eventTitle;
}

/**
 * @param eventTitle the eventTitle to set
 */
public void setEventTitle(String eventTitle) {
    this.eventTitle = eventTitle;
}

/**
 * @return the eventDate
 */
public Date getEventDate() {
    return eventDate;
}

/**
 * @param eventDate the eventDate to set
 */
public void setEventDate(Date eventDate) {
    this.eventDate = eventDate;
}


}

达尔：

主要类别：

public class MyHibernateSample {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
    EventManager eManager=new EventManager();
    eManager.createAndStoreEvent("My Test Event 1", new Date());

}
}

运行主类时，iam在线程“main”org.hibernate.MappingException:未知实体：com.lc.learn.hibernate.sample.dao.EventManager中获取异常

但是EventManager类不是实体类。请帮我解决这个问题

提前感谢,，

---

Lee

您正在此处保存一个

EventManager

对象

session.saveOrUpdate(this); // where this refers to the current EventManager object

您应该保存

事件

对象

session.saveOrUpdate(eventObj);

session.saveOrUpdate(eventObj);