Scala - 导入用于解析JSON的库 - PredictionIO

Question

我在导入库时遇到问题

[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._

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有人可以帮我吗？