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object JsonExample extends App {
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import org.json4s.JsonDSL._
import org.json4s.jackson.JsonMethods._
//第一部分，官网例子
case class Winner(id: Long, numbers: List[Int])
case class Lotto(id: Long, winningNumbers: List[Int], winners: List[Winner], drawDate: Option[java.util.Date])
val winners = List(Winner(23, List(2, 45, 34, 23, 3, 5)), Winner(54, List(52, 3, 12, 11, 18, 22)))
val lotto = Lotto(5, List(2, 45, 34, 23, 7, 5, 3), winners, None)
val json =
("lotto1" ->
("lotto-id" -> lotto.id) ~
("winning-numbers" -> lotto.winningNumbers) ~
("draw-date" -> lotto.drawDate.map(_.toString)) ~
("winners" ->
lotto.winners.map { w =>
(("winner-id" -> w.id) ~
("numbers" -> w.numbers))}))
println(compact(render(json)))
//第二部分，参照官网例子写的
case class StatInfo(min: String, max: String, nullCount: Long, notNullCount: Long, maxLength: Int)
case class TableStatInfo(tableName: String, count: Long, statInfo: List[StatInfo])
// val statInfo = StatInfo("1","2", 10, 12, 202)
val statInfoList = List(StatInfo("1","2", 10, 12, 202), StatInfo("1","2", 10, 12, 202))
val tableStatInfo = new TableStatInfo("biz_hotelorder", 0 , statInfoList)
val json1 =
("tableStatInfo" ->
("tableName" -> tableStatInfo.tableName) ~
("itemCount" -> tableStatInfo.count) ~
("StatInfo" ->
tableStatInfo.statInfo.map { w =>
(("min" -> w.min) ~
("max" -> w.max) ~
("nullCount" -> w.nullCount) ~
("notNullCount" -> w.notNullCount) ~
("maxLength" -> w.maxLength))}))
println(compact(render(json1)))
}