I want to send a JSON request body where fields can be enum values. These enum values are in camelCase, but the enum values are UPPER_SNAKE_CASE.
Kotlin classes:
data class CreatePersonDto @JsonCreator constructor (
@JsonProperty("firstName") val firstName: String,
@JsonProperty("lastName") val lastName: String,
@JsonProperty("idType") val idType: IdType
)
enum class IdType {
DRIVING_LICENCE,
ID_CARD,
PASSPORT;
}
My endpoint signature:
@PostMapping
fun createPerson(@RequestBody person: CreatePersonDto)
HTTP request:
curl -d '{ "firstName": "King", "lastName": "Leonidas", "idType": "drivingLicence" }' -H "Content-Type: application/json" -X POST http://localhost:8080/person
I want to convert "drivingLicence" to DRIVING_LICENCE implicitly.
org.springframework.core.convert.converter.Converter: It works for @RequestParam, but not for @RequestBodyorg.springframework.format.Formatter: I registered this formatter, but when I make the request the parse() method is not executed.My configuration so far:
@Configuration
class WebConfig : WebMvcConfigurer {
override fun addFormatters(registry: FormatterRegistry) {
registry.addConverter(IdTypeConverter())
registry.addFormatter(IdTypeFormatter())
}
}
You can try to use JsonProperty on enum directly
enum IdType {
@JsonProperty("drivingLicence")
DRIVING_LICENCE,
@JsonProperty("idCard")
ID_CARD,
@JsonProperty("passport")
PASSPORT;
}
If you want to have multimapping the simple thing would be defining mapping and using JsonCreator on enum level:
enum IdType {
DRIVING_LICENCE,
ID_CARD,
PASSPORT;
private static Map<String, IdType> mapping = new HashMap<>();
static {
mapping.put("drivingLicence", DRIVING_LICENCE);
mapping.put(DRIVING_LICENCE.name(), DRIVING_LICENCE);
// ...
}
@JsonCreator
public static IdType fromString(String value) {
return mapping.get(value);
}
}
See also: