Scala Play JSON:将hashmap转换为json对象，而不是数组

import play.api.libs.json._

object JsonExample {
  def main(args: Array[String]): Unit = {
    val hashMap = Map(
      "name" -> "Alice",
      "age" -> 30,
      "isStudent" -> false
    )

    // 将HashMap转换为JSON对象
    val json: JsValue = Json.toJson(hashMap)

    // 打印JSON对象
    println(Json.prettyPrint(json))
  }
}

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

object JsonExample {
  implicit val anyWrites: Writes[Any] = new Writes[Any] {
    def writes(any: Any): JsValue = any match {
      case s: String => JsString(s)
      case i: Int => JsNumber(i)
      case b: Boolean => JsBoolean(b)
      case _ => JsNull // 或者抛出异常，取决于你的需求
    }
  }

  def main(args: Array[String]): Unit = {
    val hashMap = Map(
      "name" -> "Alice",
      "age" -> 30,
      "isStudent" -> false
    )

    // 使用自定义的writes将HashMap转换为JSON对象
    val json: JsValue = Json.toJson(hashMap)

    // 打印JSON对象
    println(Json.prettyPrint(json))
  }
}