数据序列化不映射变量

Question

我的代码应该进行天气 API 调用并使用序列化将数据存储到数据类中，但是日志中的数据为空。当我删除序列名称并将变量命名为与序列名称完全相同时，它可以正常工作。

改造：

object RetrofitInstance {
    private const val BASE_URL = "https://api.open-meteo.com/"

    val instance: WeatherAPI by lazy {
        val retrofit = Retrofit.Builder()
            .baseUrl(RetrofitInstance.BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build()

        retrofit.create(WeatherAPI::class.java)
    }
}

API调用及数据存储：

api.getWeatherData(
             location.latitude,
             location.longitude,
            "temperature_2m,relative_humidity_2m,apparent_temperature,precipitation,weather_code,wind_speed_10m,wind_direction_10m",
            "visibility",
            "temperature_2m_max,temperature_2m_min,sunrise,sunset,daylight_duration,uv_index_max",
           "auto",
            1
        ).enqueue(object : Callback<WeatherResults> { // Change to WeatherResults
            @RequiresApi(Build.VERSION_CODES.O)
            override fun onResponse(call: Call<WeatherResults>, response: Response<WeatherResults>) {
                // Provide more detailed error messages based on response code if necessary
                if (response.isSuccessful) {
                    response.body()?.let {
                        weatherCache.updateCache(it) // Update the weather cache
                        Log.d("API Call", "Full API Response: ${response.body()}")
                        onSuccess(it)
                    } ?: onFailure(Throwable("Response body is null"))
                } else {
                    onFailure(Throwable("Error: ${response.code()}"))
                }
            }

            override fun onFailure(call: Call<WeatherResults>, t: Throwable) {
                onFailure(t)
            }
        })

数据类

import kotlinx.serialization.Serializable
import kotlinx.serialization.SerialName

@Serializable
data class WeatherResults(
    val current: Current? = null,
    val daily: Daily? = null,
    val hourly: Hourly? = null
)

import kotlinx.serialization.Serializable
import kotlinx.serialization.SerialName

@Serializable
data class Current(
    @SerialName("temperature_2m") val temperature: Double?,  // Works as expected
    @SerialName("apparent_temperature") val apparentTemperature: Double?,
    @SerialName("relative_humidity_2m") val relativeHumidity: Int?,  // Matches JSON
    @SerialName("weather_code") val weatherCode: Int?,
    @SerialName("wind_speed_10m") val windSpeed: Double?,
    @SerialName("wind_direction_10m") val windDirection: Double?,
    val visibility: Int?,
    val time: String
)

import kotlinx.serialization.Serializable
import kotlinx.serialization.SerialName


@Serializable
data class Daily(
    val time: List<String?>?,
    @SerialName("weather_code") val weatherCode: List<Int?>?,
    @SerialName("temperature_2m_max") val temperatureMax: List<Double?>?,
    @SerialName("temperature_2m_min") val temperatureMin: List<Double?>?,
    @SerialName("precipitation_probability_max") val precipitationProbability: List<Int?>?,
    @SerialName("apparent_temperature_max") val apparentTemperatureMax: List<Double?>?,
    @SerialName("apparent_temperature_min") val apparentTemperatureMin: List<Double?>?,
    val sunrise: List<String?>?,
    val sunset: List<String?>?,
    @SerialName("sunshine_duration") val sunshineDuration: List<Double?>?,
    @SerialName("uv_index_max") val uvIndexMax: List<Double?>?
)

我尝试删除序列化并相应地命名变量，并且数据存储正确。我还检查了我的 gradle 和插件/依赖项是最新的。

Answer 1

解决了，我必须修复我的 RetrofitInstance 类以包含 JSON 解析

object RetrofitInstance {

    fun getInstance(): WeatherAPI {
        val retrofit = Retrofit.Builder()
            .baseUrl(BASE_URL)
            .apply {
                    addConverterFactory(
                        Json { ignoreUnknownKeys = true }
                            .asConverterFactory("application/json".toMediaType())
                    )
            }
            .build()

        return retrofit.create(WeatherAPI::class.java)
    }
}