以下代码无法找到JsonWriter或JsonFormat类型类:
import com.typesafe.scalalogging.LazyLogging
import spray.json._
case class MatcherRequest2(dataType:String, testType:String)
object MatcherWriterJsonSupport2 extends /*SprayJsonSupport with*/ DefaultJsonProtocol {
implicit val matcherRequest = jsonFormat2(MatcherRequest2)
}
object MatcherTransfer2 extends LazyLogging {
import MatcherWriterJsonSupport2.rmobMatcherRequest
def fetchSignExtractionDone: Unit = {
val matcherRequest: MatcherRequest2 = MatcherRequest2("FeatureCollection", "testC")
matcherRequest.toJson
}
}
错误:
错误:(24,24)找不到JsonWriter或JsonFormat类型 MatcherRequest2 rmobMatcherRequest.toJson
错误:(24,24)方法toJson的参数不够:(隐式 writer:spray.json.JsonWriter [MatcherRequest2])spray.json.JsValue。 未指定的值参数编写器。 rmobMatcherRequest.toJson
答案 0 :(得分:0)
隐式val matcherRequest = jsonFormat2(MatcherRequest2)
替换为
隐式val matcherRequestFormat = jsonFormat2(MatcherRequest2)