ObjectMapper 无法序列化响应

Question

我正在使用 AlamofireObjectMapper，只要响应包含任何空值，它就会报错，

"FAILURE: Error Domain=com.alamofireobjectmapper.error Code=2 "ObjectMapper 无法序列化响应。”UserInfo={NSLocalizedFailureReason=ObjectMapper 无法序列化响应。}”

这就是我的要求

let URL = "https://demo6336282.mockable.io/myapi"
        Alamofire.request(URL).validate().responseObject { (response: DataResponse<WeatherResponse>) in

            let weatherResponse = response.result.value
            print(weatherResponse?.location)

            if let threeDayForecast = weatherResponse?.threeDayForecast {
                for forecast in threeDayForecast {
                    print(forecast.day)
                    print(forecast.temperature)           
                }
            }
        }

这是我的数据模型Class

import Foundation
import ObjectMapper
import AlamofireObjectMapper

class WeatherResponse: Mappable {
    var location: String? = ""
    var threeDayForecast: [Forecast]? = []

    required init?(map: Map){

    }

    func mapping(map: Map) {
        location <- map["location"]
        threeDayForecast <- map["three_day_forecast"]
    }
}

class Forecast: Mappable {
    var day: String? = ""
    var temperature: Int? = 0
    var conditions: String? = ""

    required init?(map: Map){

    }

    func mapping(map: Map) {
        day <- map["day"]
        temperature <- map["temperature"]
        conditions <- map["conditions"]
    }
}

我也尝试添加空白参数，因为此 api 不需要参数，还添加了默认 URl 编码，但没有帮助。

我不知道我遗漏了什么，当 api 响应中没有任何 null 时，这段代码工作正常。请帮忙！！

谢谢

Answer 1

您的代码没有问题，但是 URL 中的 JSON 格式错误。第三个对象的温度字段为空。

ObjectMapper 无法序列化响应

ObjectMapper failed to serialize response

ios

swift

alamofire

objectmapper