Gson无法解析Kotlin中的字符串json格式数据

Question

我在Kotlin写一个应用程序.我有一个来自Web服务的原始JSON字符串,我需要将它与Gson一起使用.

我这样做:

val gson = Gson()
val friends = gson.fromJson(response.rawResponse, JsonElement::class)

但编译器无法找到正确的fromJson方法重载,而目前可用的是(fromJson(json: String!, typeOfT: Type!)).

这是错误:

Error:(65, 50) None of the following functions can be called with the arguments supplied:
public open fun <T : Any!> fromJson(json: JsonElement!, classOfT: Class<JsonElement!>!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(json: JsonElement!, typeOfT: Type!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(reader: JsonReader!, typeOfT: Type!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(json: Reader!, classOfT: Class<JsonElement!>!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(json: Reader!, typeOfT: Type!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(json: String!, classOfT: Class<JsonElement!>!): JsonElement! defined in com.google.gson.Gson
public open fun <T : Any!> fromJson(json: String!, typeOfT: Type!): JsonElement! defined in com.google.gson.Gson

我究竟做错了什么？

Answer 1

你应该传递一个java.lang.Class而不是一个kotlin.reflect.KClass,例如:

val friends = gson.fromJson(response.rawResponse, JsonElement::class.java)