Jackson如何解析循环引用

@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
public class MyClass {
    private int id;
    private String name;
    private MyClass parent;
    // getters and setters
}

public class MyClass {
    private int id;
    private String name;
    @JsonIdentityReference(alwaysAsId = true)
    private MyClass parent;
    // getters and setters
}

ObjectMapper mapper = new ObjectMapper();

// 序列化
MyClass obj = new MyClass();
String json = mapper.writeValueAsString(obj);

// 反序列化
MyClass obj = mapper.readValue(json, MyClass.class);