如何在Scala中将映射转换为Json

我的地图如下：

Map(
Columbus Herzog -> 
 Map(
 0 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Sat Feb 13 02:18:14 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 1 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Fri Jul 22 01:52:19 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 2 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Wed Jan 06 06:24:50 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 3 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Tue May 17 17:12:16 IST 2016, class -> First, destination -> San Luis Arpt (IPI))
 )
)

{"Columbus Herzog":
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Sat Feb 13 02:18:14 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Fri Jul 22 01:52:19 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Wed Jan 06 06:24:50 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Tue May 17 17:12:16 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}]
}

我希望JSON数组如下所示：

Map(
Columbus Herzog -> 
 Map(
 0 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Sat Feb 13 02:18:14 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 1 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Fri Jul 22 01:52:19 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 2 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Wed Jan 06 06:24:50 IST 2016, class -> First, destination -> San Luis Arpt (IPI)), 
 3 -> Map(source -> Las Cruces Crawford Arpt (LRU), amount -> 5000.0, points -> 500, date_time -> Tue May 17 17:12:16 IST 2016, class -> First, destination -> San Luis Arpt (IPI))
 )
)

{"Columbus Herzog":
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Sat Feb 13 02:18:14 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Fri Jul 22 01:52:19 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Wed Jan 06 06:24:50 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}],
[{"source":"Las Cruces Crawford Arpt (LRU)","amount":"5000.0","points":"500","date_time":"Tue May 17 17:12:16 IST 2016","class":"First","destination":"San Luis Arpt (IPI)"}]
}

请给我一些建议

---

提前谢谢。

关于

net.liftweb.json.DefaultFormats

import net.liftweb.json.JsonAST
import net.liftweb.json.JsonDSL._
import net.liftweb.json.Printer.{compact,pretty}

object LiftJsonWithCollections extends App {

    val json = List(1, 2, 3)
    println(compact(JsonAST.render(json)))

    val map = Map("1" -> "one", "2" -> "two")
    println(compact(JsonAST.render(map)))
}

和输出：

[1,2,3]
{"1":"one","2":"two"}

---

只需将

Map

的内容替换为own即可。

这可能有助于您了解更多关于JSONI的信息，但“分解”会给出类似not found的错误。@ChetanNakum，此示例使用外部库。请确保您将其添加到构建中。您好，谢谢您的回复，但当我尝试添加maven时，出现了类似“加载JsonAST时出错，Scala签名JsonAST的版本错误，预期为：5.0找到：JsonAST.class中的4.1”这样的错误“我的用户位于maven:net.liftweb lift json 2.0-M5之下，我的映射如下：val map=map(“Jerrod Lindgren”->Map（0->Map（“来源”->“克林顿市（CWI）”，“金额”->3000.0，“点数”->300，“日期时间”->“2015年10月16日星期五11:06:03 IST”，“课程”->“商务”，“目的地”->“南京Arpt（NKG）”）@Chetan Nakum您将有一个嵌套的地图。怎么了？