java.lang.IllegalArgumentException：BasicBSONList只能使用数字键，而不是：

Question

我试图从collection中获取所有记录。下面是代码供参考。

public class ParkingPlace{

    @Id
    private String id;

    private String placeId;

    @DateTimeFormat(iso = ISO.DATE_TIME)
    private Date creationDate;

    @DBRef
    private List<Review> placeReviews;

    // Getters and setters
}

public class Review{

    @Id
    private String id;

    @DBRef
    private Author reviewAuthor;

    //getters and setters
}

public class Author{

    @Id
    private String id;

    private String fullName;

    //getters and setters
}

public class ParkingPlaceDAO{

    @Autowired
    MongoOperations mongoOperations;

    public List<ParkingPlace> getAllPlaces() {
        // new mongodb query
        Query query = new Query();
        // sort by date
        query.with(new Sort(Sort.Direction.DESC, "creationDate"));
        // run query
        return mongoOperations.find(query, ParkingPlace.class);
    }
}

因此，当我调用getAllPlaces()方法时，它会在控制器中抛出

java.lang.IllegalArgumentException: BasicBSONList can only work with numeric keys, not: [reviewAuthor]

我已经检查了数据库和所有集合，还从mongo shell中解雇了它给了我结果。但不是通过代码