json - Scala - 导入用于解析 JSON 的库 - PredictionIO

Question

我在导入库时遇到问题

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

[ERROR] [Console$] [error] /home/lavalamp/PredictionIO/algorithms/bestseller/src/main/scala/DataSource.scala:25: object api is not a member of package play
[ERROR] [Console$] [error] import play.api.libs.json._
[ERROR] [Console$] [error]             ^
[ERROR] [Console$] [error] /home/lavalamp/PredictionIO/algorithms/bestseller/src/main/scala/DataSource.scala:26: object api is not a member of package play
[ERROR] [Console$] [error] import play.api.libs.functional.syntax._

谁能帮我解决这个问题？