Json 序列化错误应为数组“[”的开头，但有 EOF

Question

我目前正在学习 Kotlin Multiplatform，我正在尝试使用 ktor 框架序列化 Json。我从以下 api 收到 JSON： https://opentdb.com/api.php?amount=10 但我收到此错误： "error: Expected start of the array "\[" but had "EOF" instead. JSON input: .....answers":\["Patrick Swayze","John Cusack","Harrison Ford"\]}\]}" 我收到的 JSON 看起来像这样： { "response_code": 0, "results": [ { "category": "Entertainment: Film", "type": "multiple", "difficulty": "easy", "question": "What breed of dog was Marley in the film "Marley & Me" (2008)?", "correct_answer": "Labrador Retriever", "incorrect_answers": [ "Golden Retriever", "Dalmatian", "Shiba Inu" ] }, { "category": "Entertainment: Comics", "type": "multiple", "difficulty": "hard", "question": "In the Batman comics, by what other name is the villain Dr. Jonathan Crane known?", "correct_answer": "Scarecrow", "incorrect_answers": [ "Bane", "Calendar Man", "Clayface" ] }, { "category": "Entertainment: Film", "type": "boolean", "difficulty": "easy", "question": "Han Solo's co-pilot and best friend, "Chewbacca", is an Ewok.", "correct_answer": "False", "incorrect_answers": [ "True" ] } ] }

这就是我的代码的样子 `@可序列化数据class你好( val类别：字符串， val 类型：布尔值， val难度：字符串， val 问题：字符串， val correctAnswer: 字符串, val falseAnswer: 字符串 )

class KtorClient {

private val client = HttpClient() {
    install(JsonFeature) {
        serializer = KotlinxSerializer(kotlinx.serialization.json.Json {
            prettyPrint = true
            isLenient = true
            ignoreUnknownKeys = true
        })
    }
}

@Throws(Exception::class)
suspend fun returnTestData(): String {
    return getTestData().random().question
}

private suspend fun getTestData(): List<Hello> {
    return client.get("https://opentdb.com/api.php?amount=10")
}

}`

我做错了什么？在此先感谢您的回答。

Answer 1

您的数据模型应该如下所示。

data class Response(
    val response_code: Int?,
    val results: List<Result>?
)

data class Result(
    val category: String?,
    val correct_answer: String?,
    val difficulty: String?,
    val incorrect_answers: List<String>?,
    val question: String?,
    val type: String?
)

private suspend fun getTestData():Response {
    return client.get("https://opentdb.com/api.php?amount=10")
}

此外，如果您想为每个字段设置自己的名称，您可以设置 @SerializedName("Field Name") 每个字段。

Json 序列化错误应为数组“[”的开头，但有 EOF

Json Serialization error expected start of the array "[" but had EOF instead

android

json

kotlin

serialization

ktor