java - 创建一个Post方法来保存具有多个id的对象

Question

我的 Controller 中有:

@RestController
public class OneTwoController {
    private OnTwoService _service;
//... more code
@PostMapping("/api/one-two")
@CrossOrigin
public ResponseEntity<ServiceResponse> save(@RequestBody OneTwo model) {
    return ResponseEntity.ok().body( _service.Save(model));
}

在我的实体中:

@Entity(name = "OneTwo")
@Where (clause = "deleted='false'")
public class OneTwo{
    @EmbeddedId
    private OneTwoKey_id;

    public OneTwo(OneTwoKey id) {
        this._id = id;
}

@JsonProperty("oneTwo")
    public void setId(OneTwoKey value) {
        this._id = value;
}

OneTwoKey 类:

public class OneTwoKey implements Serializable {
    @Column(name = "OneID")
    private int _oneID;

    @Column(name = "TwoID")
    private int _twoID;

    public OneTwoKey(int oneID, int twoID) {
        this._oneID = oneID;
        this._twoID = twoID;
    }

}  

我发送到 Rest API 的 json:

{
  "oneTwo": {
    "oneID": 83,
    "twoID": 69
  },
  "deleted": true
}

问题是两个 ID 都为空，因此服务无法在数据库上执行插入操作。

当 id 超过一个时，我该如何处理这些情况？

Answer 1

尝试在 OneTwoKey 类中添加 setter ，以使 JSON 反序列化器更容易:

@JsonProperty("oneID")
public void setOneID(int oneID) {
    this._oneID = oneID;
}

@JsonProperty("twoID")
public void setTwoID(int twoID) {
    this._twoID = twoID;
}

另一个解决方案是创建一个 DTO，用它来接收 Controller 中的数据，然后将其转换为您的实体:

public class OneTwoDTO {
    private Map<String, Int> oneTwo;
    private boolean deleted;
    // setters & getters
}