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ktorのHttpClientで配列のJSONをパースする

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APIレスポンスのJSONのトップレベルが配列の場合(例: [{'hoge':'huga'}...])の、ktorのHttpClientの書き方です。

githubを検索したら見つかりました。

main.kt
    val gistSerializer = Gist.serializer()
    val li: KSerializer<List<Gist>> = ArrayListSerializer(gistSerializer)

    val client = HttpClient {
        install(JsonFeature) {
            serializer = KotlinxSerializer().apply {
                setMapper(List::class as KClass<List<Gist>>, li)
                setMapper(Gist::class, gistSerializer)
            }
        }
    }
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