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我有一个员工和部门类的 Spring Rest Data 实现。但是，当我尝试使用 rest 模板获取数据时，两个实体的 id 始终为 null，但通过调用休眠方法，它会填充所有数据。有什么我缺少的代码吗？

员工

@Entity
public class Employee {

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

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

    @OneToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
    @JoinColumn(name="department_ID")
    private Department department;
    //Getters Setters

部门

@Entity
public class Department {

    @Id @GeneratedValue
    @Column(name="id")
    private Long id;
    @Column(name="name")
    private String name;

    @OneToOne(mappedBy="department")
    private Employee employee;
    // Getters setters

休息电话

ResponseEntity<Resources<Employee>> empResponse = restTemplate.exchange(url, HttpMethod.GET, null,
                new ParameterizedTypeReference<Resources<Employee>>() {});

api调用期间执行的查询

Hibernate: select employee0_.id as id1_1_0_, employee0_.department_id as departme3_1_0_, employee0_.name as name2_1_0_, department1_.id as id1_0_1_, department1_.name as name2_0_1_ from employee employee0_ left outer join department department1_ on employee0_.department_id=department1_.id where employee0_.id=?
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