java - Fuel、Kotlin、Gson，应为 BEGIN_ARRAY 但在第 1 行是 BEGIN_OBJECT

Question

我正在尝试像这样解析 JSON 字符串:

{
    "count": 1,
    "items": [
        {
            "organization_id": 6972979,
            "organization_name": "Lorem ipsum dolor sit amet, consectetur adipisicing elit",
        }
    ]
}

还有 Kotlin 类:

class LoremModel {
    var count: Int? = null
    var items: List<Lorem>? = null

    class Lorem {
        var organization_id: Int? = null
        var organization_name: String? = null

        constructor(organization_id: Int?,  organization_name: String?) {
            this.organization_id = organization_id
            this.organization_name = organization_name
        }
    }

    class ListDeserializer : ResponseDeserializable<List<LoremModel>> {
        override fun deserialize(content: String) = Gson().fromJson<List<LoremModel>>(content, object : TypeToken<List<LoremModel>>() {}.type)
    }
}

燃料部分:

Fuel.get("/lorem/search", listOf("keywords" to  keyword, "category" to category, "pageNum" to "1", "pageSize" to "10")).
        responseObject(LoremModel.ListDeserializer()) { request, _, item ->
        }

但是我得到一个错误:

[Failure: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $]

如何解决？

Answer 1

你的json

{
    "count": 1,
    "items": [
        {
            "organization_id": 6972979,
            "organization_name": "Lorem ipsum dolor sit amet, consectetur adipisicing elit",
        }
    ]
}

代表一个 JSON 对象而不是一个 JSON 数组。

因此，与其尝试将其反序列化为 LoremModel 对象的 List 类型

Gson().fromJson<List<LoremModel>>(content, object : TypeToken<List<LoremModel>>() {}.type)

您应该将其反序列化为 LoremModel 类型的对象。所以你可以这样做:

Gson().fromJson(content, LoremModel::class.java)