Scala spray json类型匹配

import spray.json._

// 定义一个JSON字符串
val jsonString = """
  {
    "name": "John",
    "age": 30,
    "isStudent": true
  }
"""

// 定义一个case class来表示JSON数据结构
case class Person(name: String, age: Int, isStudent: Boolean)

// 定义一个JsonFormat来将JSON数据转换为Person对象
implicit val personFormat: JsonFormat[Person] = jsonFormat3(Person)

// 解析JSON字符串为JsValue
val json = jsonString.parseJson

// 使用类型匹配进行数据提取和转换
json match {
  case JsObject(fields) =>
    val name = fields.get("name") match {
      case Some(JsString(value)) => value
      case _ => ""
    }
    val age = fields.get("age") match {
      case Some(JsNumber(value)) => value.toInt
      case _ => 0
    }
    val isStudent = fields.get("isStudent") match {
      case Some(JsBoolean(value)) => value
      case _ => false
    }
    val person = Person(name, age, isStudent)
    println(person)
  case _ => println("Invalid JSON")
}