如何从kotlin中的资产解析json文件？

Question

如何在kotlin中解析json文件。在互联网上有很多解决方案，但是它们都是相同的，但是我无法在kotlin中找到解析我的json文件的方法。

我的json文件

{
    "A": [
        {
            "collocation": "above average",
            "meaning": "more than average, esp. in amount, age, height, weight etc. "
        },
        {
            "collocation": "absolutely necessary",
            "meaning": "totally or completely necessary"
        },
        {
            "collocation": "abuse drugs",
            "meaning": "to use drugs in a way that's harmful to yourself or others"
        },
        {
            "collocation": "abuse of power",
            "meaning": "the harmful or unethical use of power"
        }
    ],
    "B": [
        {
            "collocation": "back pay",
            "meaning": "money a worker earned in the past but hasn't been paid yet  "
        },
        {
            "collocation": "back road",
            "meaning": "a small country road "
        },
        {
            "collocation": "back street",
            "meaning": "a street in a town or city that's away from major roads or central areas"
        },
        {
            "collocation": "back taxes",
            "meaning": "taxes that weren't paid when they were due"
        },
        {
            "collocation": "bad breath",
            "meaning": "breath that doesn't smell nice"
        }],

这样就可以达到字母W。

我想用信来分析它们。

我的数据类

data class Collocations(

    val tag:String,
    val collocation: List<Collocation>

)
data class Collocation(
    val collocation: String,
    val meaning: String
)

但我认为这些数据类在我看来是不正确的，或者是无效的。

Answer 1

您应该只需要这里提供的Collocation类。然后顶层对象可以是一个Map<String, List<Collocation>>，因此字母可以是动态键。

使用Kotlinx序列化，它可以如下所示：

import kotlinx.serialization.Serializable
import kotlinx.serialization.decodeFromString
import kotlinx.serialization.json.Json

@Serializable
data class Collocation(
    val collocation: String,
    val meaning: String,
)

fun main() {
    val json: String = TODO("get your JSON string here")
    val collocations = Json.decodeFromString<Map<String, List<Collocation>>>(json)

    val collocationsForA = collocations["A"]
    println(collocationsForA)
}