在 Scala 中解析 JSON 数组 [英] Parse JSON Array in Scala

问题描述

我有这个 jsArray (json Array)，我正在使用 import play.api.libs.json._ 库.

I have this jsArray (json Array) and I am using import play.api.libs.json._ library.

[{"device":"Samsung S8","android":true},
{"device":"iPhone 8","android":false},
{"device":"MacBook Air Pro","android":false},
{"device":"Dell XPS","android":false}]

我想在 Scala 中遍历这个 json 数组.这个数组被分配给 var 依赖.我想获取 android 的设备名称.我该怎么做?

I want to traverse through this json array in Scala. This array is assigned to var dependency. I want to get the device names which are android. How do I do that?

推荐答案

你可以试试这样的:

val jsonString: String = "[{"device":"Samsung S8","android":true {"device":"iPhone8","android":false}, {"device":"MacBook Air Pro","android":false},{"device":"Dell XPS","android":false}]"
val jsonList: List[JsValue] = Json.parse(jsonString).as[List[JsValue]]
val filteredList: List[JsValue] = jsonList.filter(json => (json  "android").as[Boolean])

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