java.lang.ClassCastException:scala.Long$不能强制转换为java.lang.Long
我得到了一个错误: java.lang.ClassCastException:scala.Long$不能转换为scala中的java.lang.Long问题 我尝试了各种方法来获得这个值java.lang.ClassCastException:scala.Long$不能强制转换为java.lang.Long,scala,Scala,我得到了一个错误: java.lang.ClassCastException:scala.Long$不能转换为scala中的java.lang.Long问题 我尝试了各种方法来获得这个值 for (beaconId <- flattenedBeaconList.flatten(flat2).distinct.toList) { //val beaconId1 = beaconId.asInstanceOf[Int].asInstanceOf[Long] //val be
for (beaconId <- flattenedBeaconList.flatten(flat2).distinct.toList) {
//val beaconId1 = beaconId.asInstanceOf[Int].asInstanceOf[Long]
//val beaconId1 = scala.Long.unbox(beaconId)
//val beaconId1 = Try(beaconId.asInstanceOf[Number].longValue()).toString
//val beaconId1 = beaconId.m
val beaconId1: Long = beaconId.asInstanceOf[Long].toLong
//println("The Beacon ID issssssss::::::" + beaconId1)
val beacon = dal.Beacons.getById(beaconId1.toLong, brandId)
//val beaconPayload = dal.Beacons.beaconPayloadByBeaconId(beacon.id.get, brandId).get
//val beacondIdValue = beaconId.asInstanceOf[Number].longValue()
//println("Getting called inside the beacon loop::::::::::" + beacondIdValue)
//val beaconDetails = dal.Beacons.getById(beaconId1, brandId)
//println("Major value for Beacon is::::::::::" + beaconPayload)
}
for(beaconId)什么类型是flattedbeaconlist
?看起来您正试图将scala.Long
的伴生对象强制转换为java.lang.Long
,但是如果没有flattedbeaconlist
和flat2
,那么就无法理解为什么没有flat2
和flat2
的定义,def flat2(any:any):List[any]=任何匹配项{case i:List[]=>i case{u=>List(any)}val flatteedbeaconlist=List(Long)activeBeacon::flatteedbeaconlist activeBeacon是Scala.Long的列表。flat2函数用于展平列表以删除列表中的重复项。