如何配置Spring以使用@RequestBody批注将JSON反序列化为BigDecimal

Question

My BigDecimals are null when I post to the endpoint "/test".

Payload that I am posting:

{
  "decimalOne": "230.0",
  "decimalTwo": "215.0"
}

MyObject class:

public class MyObject {
    private BigDecimal decimalOne;
    private BigDecimal decimalTwo;

    public MyObject() {
    }

    public MyObject(BigDecimal decimalOne, BigDecimal decimalTwo) {
        this.decimalOne = decimalOne;
        this.decimalTwo = decimalTwo;
    }

    BigDecimal getDecimalOne() {
        return decimalOne;
    }

    BigDecimal getDecimalTwo() {
        return decimalTwo;
    }
}

Controller:

@RestController
@RequestMapping("/test")
public class MyObjectController {

    private DecimalService decimalService;

    @Inject
    MyObjectController(DecimalService decimalService){
        this.decimalService = decimalService;
    }

    @PostMapping
    public Integer getNumberBack(@RequestBody MyObject myObjectPayload){
       return decimalService.getNumber(myObjectPayload);
    }
}

How do I get Spring to deserialize the JSON into BigDecimal. Also please let me know if I left out any information. Thanks!

Answer 1

您需要将设置器添加到MyObject，因为使用MyObject（）反序列化器创建对象后，没有合法的方式设置字段。