Kotlin 反序列化任何不支持的类型

Question

我正在尝试使用 kotlin.serialization 将 JSON 反序列化为 kotlin 类。然而，当代码去反序列化 json 时，它会抛出错误 kotlinx.serialization.SerializationException: Any type is not supported
谁能帮我解决这个问题？

产品:

@Serializable
data class Product(
        val id: Int = 0,
        val name: String = "",
        val slug: String = "",
        val permalink: String = "",
        @SerialName("date_created") val dateCreated: String = "",
        @SerialName("date_created_gmt") val dateCreatedGmt: String = "",
        @SerialName("date_modified") val dateModified: String = "",
        @SerialName("date_modified_gmt") val dateModifiedGmt: String = "",
        val type: String = "",
        val status: String = "",
        val featured: Boolean = false,
        @SerialName("catalog_visibility") val catalogVisibility: String = "",
        val description: String = "",
        @SerialName("short_description") val shortDescription: String = "",
        val sku: String = "",
        val price: String = "",
        @SerialName("regular_price") val regularPrice: String = "",
        @SerialName("sale_price") val salePrice: String = "",
        @SerialName("on_sale") val onSale: Boolean = false,
        val purchasable: Boolean = false,
        @SerialName("total_sales") val totalSales: Int = 0,
        @SerialName("external_url") val externalUrl: String = "",
        @SerialName("tax_status") val taxStatus: String = "",
        @SerialName("tax_class") val taxClass: String = "",
        @SerialName("stock_quantity") val stockQuantity: String = "",
        @SerialName("stock_status") val stockStatus: String = "",
        val backorders: String = "",
        @SerialName("backorders_allowed") val backordersAllowed: Boolean = false,
        val backordered: Boolean = false,
        @SerialName("sold_individually") val soldIndividually: Boolean = false,
        val weight: String = "",
        val dimensions: ProductDimensions = ProductDimensions(),
        @SerialName("shipping_required") val shippingRequired: Boolean = false,
        @SerialName("shipping_taxable") val shippingTaxable: Boolean = false,
        @SerialName("shipping_class") val shippingClass: String = "",
        @SerialName("shipping_class_id") val shippingClassId: Int = 0,
        @SerialName("reviews_allowed") val reviewsAllowed: Boolean = false,
        @SerialName("average_rating") val averageRating: String = "",
        @SerialName("rating_count") val ratingCount: Int = 0,
        @SerialName("related_ids") val relatedIds: List<Int> = listOf(),
        @SerialName("upsell_ids") val upsellIds: List<Int> = listOf(),
        @SerialName("cross_sell_ids") val crossSellIds: List<Int> = listOf(),
        @SerialName("parent_id") val parentId: Int = 0,
        @SerialName("purchase_note") val purchaseNote: String = "",
        val categories: List<ProductCategory> = listOf(),
        val images: List<ProductImage> = listOf(),
        val attributes: List<ProductAttribute> = listOf(),
        val variations: List<Int> = listOf()
)

产品尺寸:

data class ProductDimensions(
        val length: String = "",
        val width: String = "",
        val height: String = ""
)

产品属性:

data class ProductAttribute(
        val id: Int = 0,
        val name: String = "",
        val position: Int = 0,
        val visible: Boolean = false,
        val variation: Boolean = false,
        val options: List<String> = listOf()
)

产品分类:

data class ProductCategory(
        val id: Int = 0,
        val name: String = "",
        val slug: String = ""
)

产品图片:

data class ProductImage(
        val id: Int = 0,
        @SerialName("date_created") val dateCreated: String = "",
        @SerialName("date_created_gmt") val dateCreatedGmt: String = "",
        @SerialName("date_modified") val dateModified: String = "",
        @SerialName("date_modified_gmt") val dateModifiedGmt: String = "",
        val src: String = "",
        val name: String = "",
        val alt: String = ""
)

并且关联的 json 在 pastebin here

Answer 1

这是一个有效的cloud9 (只需运行 ./gradlew run )解决方案，使用最新版本的 Kotlin (1.3.0) 和序列化运行时 (0.9.0)

val serializer = Product.serializer().list
val json = JSON.nonstrict.parse<List<Product>>(serializer, jsonString)

请注意，某些属性必须添加 @Optional 注释才能使此序列化与您的示例一起使用，因此解析的非严格版本。

@Serializable
data class Product(
        val id: Int = 0,
        val name: String = "",
        val slug: String = "",
        val permalink: String = "",
        @Optional @SerialName("date_created") val dateCreated: String = "",
        @SerialName("date_created_gmt") val dateCreatedGmt: String = "",
        @SerialName("date_modified") val dateModified: String = "",
        @SerialName("date_modified_gmt") val dateModifiedGmt: String = "",
        val type: String = "",
        val status: String = "",
        val featured: Boolean = false,
        @SerialName("catalog_visibility") val catalogVisibility: String = "",
        val description: String = "",
        @SerialName("short_description") val shortDescription: String = "",
        val sku: String = "",
        val price: String = "",
        @SerialName("regular_price") val regularPrice: String = "",
        @SerialName("sale_price") val salePrice: String = "",
        @SerialName("on_sale") val onSale: Boolean = false,
        val purchasable: Boolean = false,
        @SerialName("total_sales") val totalSales: Int = 0,
        @SerialName("external_url") val externalUrl: String = "",
        @SerialName("tax_status") val taxStatus: String = "",
        @SerialName("tax_class") val taxClass: String = "",
        @SerialName("stock_quantity") val stockQuantity: String = "",
        @Optional @SerialName("stock_status") val stockStatus: String = "",
        val backorders: String = "",
        @SerialName("backorders_allowed") val backordersAllowed: Boolean = false,
        val backordered: Boolean = false,
        @SerialName("sold_individually") val soldIndividually: Boolean = false,
        val weight: String = "",
        val dimensions: ProductDimensions = ProductDimensions(),
        @SerialName("shipping_required") val shippingRequired: Boolean = false,
        @SerialName("shipping_taxable") val shippingTaxable: Boolean = false,
        @SerialName("shipping_class") val shippingClass: String = "",
        @SerialName("shipping_class_id") val shippingClassId: Int = 0,
        @SerialName("reviews_allowed") val reviewsAllowed: Boolean = false,
        @SerialName("average_rating") val averageRating: String = "",
        @SerialName("rating_count") val ratingCount: Int = 0,
        @SerialName("related_ids") val relatedIds: List<Int> = listOf(),
        @SerialName("upsell_ids") val upsellIds: List<Int> = listOf(),
        @SerialName("cross_sell_ids") val crossSellIds: List<Int> = listOf(),
        @SerialName("parent_id") val parentId: Int = 0,
        @SerialName("purchase_note") val purchaseNote: String = "",

        val categories: List<ProductCategory> = listOf(),
        val images: List<ProductImage> = listOf(),
        val attributes: List<ProductAttribute> = listOf(),
        val variations: List<Int> = listOf()
)

通知: date_created , stock_status
根据您的 json 原始数据生成数据类的一个很好的在线工具是 quicktype.io

编辑:刚刚发现 cloud9 两年前被亚马逊收购了，你不能再创建一个帐户来查看公共(public)工作区。
所以这里是 link to the filesystem