Hibernate 带Spring和Jackson的递归性_Hibernate_Rest_Recursion_Model View Controller_Jackson

Hibernate 带Spring和Jackson的递归性

hibernate rest recursion model-view-controller

Hibernate 带Spring和Jackson的递归性,hibernate,rest,recursion,model-view-controller,jackson,Hibernate,Rest,Recursion,Model View Controller,Jackson,我需要创建一个带有树实体的模型，所有这些实体之间都有一个引用，我需要使用Jackson的API将其序列化到我的AngularJS应用程序，但是，当我到达端点时，返回的JSON是错误的。有什么办法来做这个？更好的方法还是修复它的方法地点类别： @JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id") @Entity(name = "od_places") public cl

我需要创建一个带有树实体的模型，所有这些实体之间都有一个引用，我需要使用Jackson的API将其序列化到我的AngularJS应用程序，但是，当我到达端点时，返回的JSON是错误的。有什么办法来做这个？更好的方法还是修复它的方法

地点类别：

@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
@Entity(name = "od_places")
public class place {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column
    private String name;

    @Column
    private int number;

    @Column
    private int zone;

    @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true)
    @JoinColumn(name = "place_id")
    private List<Dweller> dwellers;

    @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true)
    @JoinColumn(name = "id")
    private List<Route> routes;

    @Column
    private Geometry geom;

    @Column
    private float x;

    @Column
    private float y;

    @Column
    private Date lastUpdate;

    @Column
    private Date regDate;

    @Column
    private boolean disabled;
}

路线等级：

@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
@Entity(name = "od_routes")
public class Route {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column
    private String weekDay;

    @Column
    private int trip;

    @OneToOne(orphanRemoval = true)
    private Place origin;

    @Column
    private String departureTime;

    @OneToOne(orphanRemoval = true)
    private Place destiny;

    @Column
    private String arrivalTime;

    @OneToOne(orphanRemoval = true)
    private Dweller dweller;

    @Column
    private String reason;

    @Column
    private String travelMode;

    @Column
    private Date lastUpdate;

    @Column
    private Date regDate;

    @Column
    private boolean disabled;
}

邮递员回应：

[
{
    "id": 1,
    "name": "Prefeito Mario de Menezes, Avenida",
    "number": 1,
    "zone": 1,
    "dwellers": [
        {
            "id": 1,
            "gender": "Masculino",
            "deficient": false,
            "ageRange": "20 Anos",
            "schooling": "Graduado",
            "ocupation": "Assalariado",
            "place": 1,
            "lastUpdate": 1583895600000,
            "regDate": 1583895600000,
            "disabled": false
        }
    ],
    "routes": [
        {
            "id": 1,
            "weekDay": "Terça-Feira",
            "trip": 1,
            "origin": 1, // THIS SHOULD BE AN OBJECT!
            "departureTime": "08:00 - 08:29",
            "destiny": {
                "id": 2,
                "logDom": "Ronat Valter Sodré, Rua",
                "numLogDom": 2,
                "ztDom": 2,
                "dwellers": [],
                "routes": [
                    {
                        "id": 2,
                        "weekDay": "Terça-Feira",
                        "trip": 2,
                        "origin": 2,
                        "departureTime": "08:30 - 08:59",
                        "destiny": 1,
                        "arrivalTime": "11:30 - 11:59",
                        "dweller": {
                            "id": 1,
                            "gender": "Masculino",
                            "deficient": false,
                            "ageRange": "20 Anos",
                            "schooling": "Graduado",
                            "ocupation": "Assalariado",
                            "place": 1, // THIS SHOULD ALSO BE AN OBJECT!
                            "lastUpdate": 1583895600000,
                            "regDate": 1583895600000,
                            "disabled": false
                        },
                        "reason": "Retorno à residência",
                        "travelMode": "Moto (como motorista)",
                        "lastUpdate": 1583895600000,
                        "regDate": 1583895600000,
                        "disabled": false
                    }
                ],
                "geom": null,
                "x": -23.274357,
                "y": -51.060287,
                "lastUpdate": 1583809200000,
                "regDate": 1583809200000,
                "disabled": false
            },
            "arrivalTime": "08:00 - 08:29",
            "dweller": {
                "id": 1,
                "gender": "Masculino",
                "deficient": false,
                "ageRange": "20 Anos",
                "schooling": "Graduado",
                "ocupation": "Assalariado",
                "place": 1,
                "lastUpdate": 1583895600000,
                "regDate": 1583895600000,
                "disabled": false
            },
            "reason": "Lazer",
            "travelMode": "Moto (como motorista)",
            "lastUpdate": 1583895600000,
            "regDate": 1583895600000,
            "disabled": false
        }
    ],
    "geom": null,
    "x": -23.266556,
    "y": -51.038334,
    "lastUpdate": 1583809200000,
    "regDate": 1583809200000,
    "disabled": false
},
2, // THIS NUMBER TWO BREAKS EVERYTHING HERE! WHERE IS MY SECOND OBJECT?
.... // The others object are returned as the first one, just the second object returns as a number 2.
]
}

有几件事需要说明：我真的需要位置模型列表，因为我希望我装载的每个地方都有他的路线。我和博士后一起工作。所有数据都是模拟的

我想要的是：

我想解决这个问题，让它变得更好，并学习为什么以及如何让它起作用。

尼古拉·舍甫琴科在评论中给出的答案对我有用

“在您的位置，您与Route和Resident有一对多的关系，而在Route和Resident中，您与Place有一对一的关系（向后）。因此，首先您应该正确地设计您的表。此外，此链接可能对递归Jackson引用有帮助”

您是否使用Spring Data JPA？或者整个序列化是如何进行的呢？在你的

地点

中，你与

路线

和

居住者

有一对多的关系，而在

路线

和

居住者

中，你与

地点

有一对一的关系（向后）。所以首先你应该正确设计你的桌子。这个链接可能对递归Jackson引用很有帮助Sebastiaan，我使用的是Spring数据JPA。通过从我的端点返回ResponseEntity，序列化是自动的。我很确定这件作品是Jasckson做的对吧？哇！尼古拉，你帮了大忙！！我总是和许多人或一个女人搞得一团糟！JsonManagedReference为我工作！谢谢我所做的是修复：修复了模型上的关系，将JsonManagedReference和JsonBackReference命名等等。@NikolaiShevchenko您能否详细说明您的评论，作为对这个问题的回答，以便提问者能够接受？

[
{
    "id": 1,
    "name": "Prefeito Mario de Menezes, Avenida",
    "number": 1,
    "zone": 1,
    "dwellers": [
        {
            "id": 1,
            "gender": "Masculino",
            "deficient": false,
            "ageRange": "20 Anos",
            "schooling": "Graduado",
            "ocupation": "Assalariado",
            "place": 1,
            "lastUpdate": 1583895600000,
            "regDate": 1583895600000,
            "disabled": false
        }
    ],
    "routes": [
        {
            "id": 1,
            "weekDay": "Terça-Feira",
            "trip": 1,
            "origin": 1, // THIS SHOULD BE AN OBJECT!
            "departureTime": "08:00 - 08:29",
            "destiny": {
                "id": 2,
                "logDom": "Ronat Valter Sodré, Rua",
                "numLogDom": 2,
                "ztDom": 2,
                "dwellers": [],
                "routes": [
                    {
                        "id": 2,
                        "weekDay": "Terça-Feira",
                        "trip": 2,
                        "origin": 2,
                        "departureTime": "08:30 - 08:59",
                        "destiny": 1,
                        "arrivalTime": "11:30 - 11:59",
                        "dweller": {
                            "id": 1,
                            "gender": "Masculino",
                            "deficient": false,
                            "ageRange": "20 Anos",
                            "schooling": "Graduado",
                            "ocupation": "Assalariado",
                            "place": 1, // THIS SHOULD ALSO BE AN OBJECT!
                            "lastUpdate": 1583895600000,
                            "regDate": 1583895600000,
                            "disabled": false
                        },
                        "reason": "Retorno à residência",
                        "travelMode": "Moto (como motorista)",
                        "lastUpdate": 1583895600000,
                        "regDate": 1583895600000,
                        "disabled": false
                    }
                ],
                "geom": null,
                "x": -23.274357,
                "y": -51.060287,
                "lastUpdate": 1583809200000,
                "regDate": 1583809200000,
                "disabled": false
            },
            "arrivalTime": "08:00 - 08:29",
            "dweller": {
                "id": 1,
                "gender": "Masculino",
                "deficient": false,
                "ageRange": "20 Anos",
                "schooling": "Graduado",
                "ocupation": "Assalariado",
                "place": 1,
                "lastUpdate": 1583895600000,
                "regDate": 1583895600000,
                "disabled": false
            },
            "reason": "Lazer",
            "travelMode": "Moto (como motorista)",
            "lastUpdate": 1583895600000,
            "regDate": 1583895600000,
            "disabled": false
        }
    ],
    "geom": null,
    "x": -23.266556,
    "y": -51.038334,
    "lastUpdate": 1583809200000,
    "regDate": 1583809200000,
    "disabled": false
},
2, // THIS NUMBER TWO BREAKS EVERYTHING HERE! WHERE IS MY SECOND OBJECT?
.... // The others object are returned as the first one, just the second object returns as a number 2.
]
}