小编mfr*_*mfr的帖子

基本上我正在尝试创建一个简单的促销页面,我得到的错误是SQL错误:1054,SQLState:42S22错误是'字段列表'中的未知列'promotion0_.promo_type_id'

这是模型类

package promotions.model;


import java.io.Serializable;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;

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

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="id")
private int id;
private String name;
private boolean active;
private boolean status;
@ManyToOne
@JoinColumn(name="promoType_id")
private Promo_Type promo_Type;
@ManyToOne
@JoinColumn(name="roomType_id")
private RoomType room_Types;



public Promotion() {

}
public Promotion(String name, boolean active, boolean status, Promo_Type promo_Type, RoomType room_Types) {
    super();
    this.name = name; …