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Scala code: import net.liftweb.json._ case class Province(id: String, name: String, parentName: Option[String], parentId: Option[String]) case class ProvinceJson(provinceData: List[Province]) object Test extends Application { val json = """ { | "provinceData": | [ | { | "name":"hb", | "parentName":null, | "parentId":null, | "id":"450" | } | ] |} | """.stripMargin parse(json).extract[ProvinceJson] } When I run this code, it reports compilation error: could not find implicit value for parameter formats: net.liftweb.json.Formats parse(json).extract[ProvinceJson] ^ not enough arguments for method extract: (implicit formats: net.liftweb.json.Formats, implicit mf: scala.reflect.Manifest[com.thoughtworks.sfexpress.sf_ws.ProvinceJson])com.thoughtworks.sfexpress.sf_ws.ProvinceJson. Unspecified value parameters formats, mf. parse(json).extract[ProvinceJson] ^ Do I miss anything?
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