kotlinx.serializationの雑なメモ

Jsonの項目名を指定する

json

{
  "id": 1,
  "name": "aaa",
  "created_at": "Sun May 20 2018 20:33:49 GMT+0900 (JST)"
}

User.kt

@Serializable
data class User(
  val id: Long,
  val name: String,
  @SerialName("created_at")
  val createdAt: String
){}

json

[
  {
    "id": 1,
    "name": "aaa"
  },
  {
    "id": 2,
    "name": "bbb"
  }
]

User.kt

@Serializable
data class User(
  val id: Long,
  val name: String
){}

Parse.kt

fun parseList(json: String) = JSON.parse<List<User>>(User.serializer().list, json)

json

[
  {
    "id": 1,
    "name": "aaa"
    "age": 20
  },
  {
    "id": 2,
    "name": "bbb"
  }
]

User.kt

@Serializable
data class User(
  val id: Long,
  val name: String,
  @Optional
  val age: Int? = null
){}