scala json4s如何按条件提取字段

import org.json4s._
import org.json4s.native.JsonMethods._

// 假设我们有一个JSON字符串
val jsonString = """
  {
    "name": "John",
    "age": 30,
    "city": "New York",
    "hobbies": ["reading", "music", "sports"],
    "address": {
      "street": "123 Main St",
      "zip": "10001"
    }
  }
"""

// 解析JSON字符串为JValue对象
val json = parse(jsonString)

// 提取name字段的值
val name = (json \ "name").extract[String]
println(s"Name: $name")

// 提取age字段的值
val age = (json \ "age").extract[Int]
println(s"Age: $age")

// 提取hobbies字段的值
val hobbies = (json \ "hobbies").extract[List[String]]
println(s"Hobbies: $hobbies")

// 提取address字段的值
val address = (json \ "address").extract[Map[String, String]]
println(s"Address: $address")