Scala/Play如何使用JSON读取来处理JSON值，该值可以是字符串或数组，并且总是返回Set[String]

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

import play.api.libs.json._

val jsonString = """{"name": "John", "age": 30, "hobbies": ["reading", "swimming"]}"""
val jsonValue = Json.parse(jsonString)

val hobbiesResult = (jsonValue \ "hobbies").validate[Set[String]]
hobbiesResult match {
  case JsSuccess(hobbies, _) => // 处理Set[String]类型的值
    println(s"Hobbies: $hobbies")
  case JsError(errors) => // 处理错误
    println("Failed to read hobbies")
}