java - JsonManagedReference 与 JsonBackReference

Question

我想知道Jackson中@JsonManagedReference和@JsonBackReference的区别？

Answer 1

@JsonManagedReference is the forward part of reference – the one that gets serialized normally. @JsonBackReference is the back part of reference – it will be omitted from serialization.

所以他们真的取决于你们关系的方向

public class User {
    public int id;
    public String name;

    @JsonBackReference
    public List<Item> userItems; 
} 

public class Item {
    public int id;
    public String itemName;

    @JsonManagedReference
    public User owner; 
 }