循环依赖双向@OneToMany JPA关系 [英] Circular Dependency bidirectional @OneToMany JPA relationship

问题描述

给出以下两个实体:

@Entity
public class Goal {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

private String description;

private BigDecimal amount;

@Email
private String email;

@Email
private String supervisorEmail;

private LocalDateTime deadline;

@Enumerated(EnumType.STRING)
@Column(nullable = false)
private PaymentPurpose purpose;

@Enumerated(EnumType.STRING)
private GoalStatus status;

@ManyToOne(cascade = CascadeType.ALL)
private Person person;



//getters and setters
}

和

@Entity
public class Person {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String firstName;
    private String lastName;

    @Email
    private String email;

    @OneToMany(mappedBy = "person")
    private List<Goal> goals;

    //getters and setters

}

当我插入带有虚拟Person的虚拟Goal后调用goalRepository.findAll()时，我得到了永无止境的递归循环. 在Person的goal列表中添加@JsonIgnore并没有帮助.我也尝试过@JsonIgnoreProperties.我想念什么?

When I call goalRepository.findAll() after inserting a Dummy Goal with a Dummy Person, I get a never ending recursive loop. Adding @JsonIgnore to the goal list in Person didn't help. I also tried @JsonIgnoreProperties. What am I missing?

推荐答案

如果 jackson 引发了异常，请尝试使用以下两个注释:

In case the exception is raised by jackson, try to use these two annotations:

• @JsonManagedReference
• @JsonBackReference

请参见 http://www.baeldung.com/jackson-双向关系和无限递归

这篇关于循环依赖双向@OneToMany JPA关系的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！