Jackson circular reference (2.0)

Question

I have a user -> hasMany userPermission, and am getting a circular reference when spring MVC tries to output JSON. If I set the user permissions to null, it works. If I have a user->hasmany->userpermission (and permission manyToOne user) I get a stack overflow.

User class has:

@OneToMany(mappedBy="user", cascade=CascadeType.ALL, fetch=FetchType.EAGER)
    @JsonManagedReference("user-perm") private List<UserPermission> userPermissions;

UserPermissoin has: //bi-directional many-to-one association to User

@ManyToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
    @JoinColumn(name="user_id", nullable=false)
    @JsonBackReference("user-perm") private User user;

Any ideas here?

* Update * Jackson 2.3.0 fixed it, Spring works with 2.3.0 from 1.9 with no config changes, just changing the maven dependencies.

Well, the whole point is to return the user from a RESTful service to display the permission details. — mikeb, Jan 11 '14 at 04:25
So, I should have different fields for the JPA and for Jackson? The ignore annotation didn't seem to work, either. — mikeb, Jan 11 '14 at 04:30
Please enter your own answer rather than proclaim 'solved' in the title. — Andrew Thompson, Jan 11 '14 at 08:09

score 0 · Answer 1 · answered Jan 11 '14 at 08:12

0

user1022260: Jackson 2.3.0 fixed it, Spring works with 2.3.0 from 1.9 with no config changes, just changing the maven dependencies.

answered Jan 11 '14 at 08:12

MariuszS

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Jackson circular reference (2.0)

1 Answers1