[英]How to delete object from list in JSON using SpringBoot and MongoDB
[英]How to know from Json which class an object is in SpringBoot?
我在请求正文中有以下 JSON 对象:
JSON
{
"nombre": "example",
"number": 100,
"listOfMeasurables":{
"measurableOne":{
"positionOne":[0,3,0],
"positionTwo":[0,3,0]
},
"measurableTwo":{
"positionOne":[0,3]
}
}
}
现在我有抽象类 Measurable 和 MeasurableOne、MeasurableTwo 和 MeasurableThree,它们扩展了 Measurable。
可衡量的
public abstract class Measurable {
public abstract String getType();
}
可测量的
public class MeasurableOne extends Measurable {
protected int [] positionOne;
protected int [] positionTwo;
public MeasurableOne(int [] positionOne, int [] positionTwo) {
this.positionOne = positionOne;
this.positionTwo = positionTwo;
}
@Override
public String getType() {
return "MeasurableOne";
}
}
可测量二
public class MeasurableTwo extends Measurable {
protected int [] positionOne;
public MeasurableTwo(int [] positionOne) {
this.positionOne = positionOne;
}
@Override
public String getType() {
return "MeasurableTwo";
}
}
可测三
public class MeasurableThree extends Measurable {
protected int [] positionOne;
protected int [] positionTwo;
protected int [] positionThree;
public MeasurableThree(int [] positionOne, int [] positionTwo, int [] positionThree) {
this.positionOne = positionOne;
this.positionTwo = positionTwo;
this.positionThree = positionThree;
}
@Override
public String getType() {
return "MeasurableThree";
}
}
现在,我有一个控制器,它将接收这个 json。 listOfMeasurables 数组可以按任意顺序包含 measurableOne、measurableTwo、measurableThree、1、2 或 3 个。 我如何让控制器知道可测量的类型以创建该对象?
@PostMapping(path = "/createActivity")
public ResponseEntity<String> createActivity(@RequestBody Activity activity) { ->> HERE
}
任何帮助表示赞赏! 谢谢
您的Activity
可以使用以下代码定义,jackson 将处理它
public class activity{
private String nombre;
private Integer number;
private ListOfMeasurables listOfMeasurables;
// getter and setter
}
public class ListOfMeasurables {
private MeasurableOne measurableOne;
private MeasurableTwo measurableTwo;
private MeasurableThree measurableThree;
// getter and setter
}
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