如何为Map[String，Any]编写自定义circe编解码器

import io.circe._
import io.circe.parser._
import io.circe.syntax._

case class MyClass(data: Map[String, Any])

implicit val myClassEncoder: Encoder[MyClass] = new Encoder[MyClass] {
  final def apply(a: MyClass): Json = {
    val jsonMap = a.data.foldLeft(JsonObject.empty) { case (acc, (k, v)) =>
      acc.add(k, Json.fromValues(List(v.asJson)))
    }
    Json.fromJsonObject(jsonMap)
  }
}

implicit val myClassDecoder: Decoder[MyClass] = new Decoder[MyClass] {
  final def apply(c: HCursor): Decoder.Result[MyClass] = {
    val map = c.value.asObject
      .flatMap(_.toMap.mapValues(_.as[List[Any]].getOrElse(List())))
    map match {
      case Some(m) => Right(MyClass(m))
      case None    => Left(DecodingFailure("Failed to decode MyClass", c.history))
    }
  }
}

val myMap: Map[String, Any] = Map("key1" -> "value1", "key2" -> 123, "key3" -> true)
val myClassInstance = MyClass(myMap)
val jsonStr = myClassInstance.asJson.toString
println(jsonStr) // 输出: {"data":{"key1":"value1","key2":123,"key3":true}}

val jsonString = """{"data":{"key1":"value1","key2":123,"key3":true}}"""
val decoded = decode[MyClass](jsonString)
decoded match {
  case Left(error) => println("解码失败: " + error)
  case Right(obj)  => println("解码成功: " + obj.data)
}