如何在scala中将嵌套的JSON转换为映射对象

libraryDependencies += "com.typesafe.play" %% "play-json" % "2.9.2"

import play.api.libs.json._
import play.api.libs.functional.syntax._

case class Person(name: String, age: Int, address: Address)
case class Address(street: String, city: String, country: String)

implicit val addressReads: Reads[Address] = (
  (JsPath \ "street").read[String] and
  (JsPath \ "city").read[String] and
  (JsPath \ "country").read[String]
)(Address.apply _)

implicit val personReads: Reads[Person] = (
  (JsPath \ "name").read[String] and
  (JsPath \ "age").read[Int] and
  (JsPath \ "address").read[Address]
)(Person.apply _)

val jsonStr = """{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "country": "USA"
  }
}"""

val json = Json.parse(jsonStr)
val result = json.validate[Person]

result.fold(
  errors => {
    println("Failed to parse JSON: " + errors)
  },
  person => {
    println("Parsed person: " + person)
  }
)