如何将JSON与动态键映射到Spring Data MongoDB实体上？

Question

所有人？

    {
    "Recife": {
        "coordenadas": {
            "upperLeft": {
                "x": 0,
                "y": 1000
            },
            "bottomRight": {
                "x": 600,
                "y": 500
            }
        }
    }
}

{
    "Cuiaba": {
        "coordenadas": {
            "upperLeft": {
                "x": 0,
                "y": 1000
            },
            "bottomRight": {
                "x": 600,
                "y": 500
            }
        }
    }
}

{
    "Santos": {
        "coordenadas": {
            "upperLeft": {
                "x": 0,
                "y": 1000
            },
            "bottomRight": {
                "x": 600,
                "y": 500
            }
        }
    }
}

@Id
private String id;

@Field
private Map<String, Cidades> map;

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

public Map<String, Cidades> getMap() {
    return map;
}

public void setMap(Map<String, Cidades> map) {
    this.map = map;
}

Answer 1

不，你不能。如果您想将这些文档映射到对象，您应该有静态键。这里可能的解决方案是使用简单的操作检索文档：

Iterable<BasicDBObject> objects = mongoOperations.find(query, BasicDBObject.class, "collection");

然后手动将其转换为对象。

objects.stream()
   .map(obj -> new Entity(...)
   .collect(Collectors.toList());