MySQLSyntaxErrorException：'字段列表'中的未知列'vehicle_vehicleId'

Question

試圖運行一個簡單的示例。但得到以下錯誤。可能是一個愚蠢的錯誤。

錯誤：

MySQLSyntaxErrorException：未知列 'vehicle_vehicleId' 在 '字段列表'

代碼：

User.java

public class User { 

    @Id @GeneratedValue 
    private Long userId; 

    @OneToOne 
    private Vehicle vehicle; 

    // Getter and setter of userId and vehicle 
} 

Vehicle.java：

@Entity 
public class Vehicle { 

    @Id @GeneratedValue 
    private int vehicleId; 

    private String vehicleName; 

    // getter and setter of vehicleId and vehicleName 
} 

MainClass.java

SessionFactory sessionFact = new Configuration().configure().buildSessionFactory(); 
User user1 = new User(); 

Session session = sessionFact.openSession(); 
Transaction tx = session.beginTransaction(); 
user1.setUserAddress("USA"); 
user1.setUserName("John"); 
Vehicle vehicle1 = new Vehicle(); 
vehicle1.setVehicleName("Ferrari"); 
user1.setVehicle(vehicle1); 
session.save(user1); 
session.save(vehicle1); 
tx.commit(); 
session.close(); 

我不知道爲什麼它不能夠創建映射列'vehicle_vehicleId'。 我經歷了以下的答案。但它實際上沒有幫助。

• java hibernate Unknown column ' ' in 'field list'
• ERROR: Unknown column 'this_.idHardDrives' in 'field list'
• Hibernate : Unknown column in field list

請幫助

Answer 1

我看不出@OneToOne描繪兩個關係之間的關係@JoinColumn或mappedBy財產。請通過下面的例子，它會給你清晰的想法@OneToOne。

One To One Relationship Example