spring restful 返回json的问题

orm用的是hibernate
实体类：
@Entity
public class User {
private static final long serialVersionUID = 1L;

    @Id
    private String id;
    private String name;
    private int age；
    @OneToOne
    private Account account;

}
@Entity
public class Account {
private static final long serialVersionUID = 1L;

    @Id
    private String id;
    private double amount;
    @OneToOne
    private User user;

}
RestController:
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserDao userDao;

    @RequestMapping(value="", method = RequestMethod.GET)
    public List<User> findAllUser() {
        List<User> users = userDao.findAll();
        return users;
    }

}
比如这样的一个查询，最终返回的users是会用jackson解析成json再传回前端的，但由于这里User实体里包含Account，Account又包含User，这样的情况下解析就会陷入死循环，不知道有没有人遇到过这种问题，是怎么解决的呢？

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