我认为问题可能出在Phone类的连接列注释中。您正在指定 employee_id 的连接列但是在Employee类中，id字段的 @Column 注释被映射到列 id 。

I think the issue may be in your join column annotation in the Phone class. You are specifying a join column of employee_id yet in the Employee class the @Column annotation for the id field is mapped to the column id.

尝试更改/同步连接列：

Try changing/synchronizing the join columns:

@ManyToOne(fetch = FetchType.EAGER, targetEntity=your.package.here.Employee.class)
@JoinColumn(name = "id")
private Employee owner;

或

员工。 java

@Id
@Column(name = "employee_id", unique = true, nullable = false)
@GeneratedValue(strategy = javax.persistence.GenerationType.IDENTITY)
private Integer id;

Phone.java

@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "employee_id", targetEntity=your.package.here.Employee.class)
private Employee owner;