无法读取数据，因为 openweathermap 的格式不正确 api

Question

我正在 swift 中使用 openweathermap api 开发天气应用程序并使用 mvvm json 解析数据 pattern.I 使用此代码显示数据无法读取因为它的格式不正确。

import UIKit

struct WeatherModel: Codable {

    var main:String!
    var description:String!
    var icon:String!
    var temp:Int?
    
        
    enum CodingKeys: String, CodingKey {
        
        case main = "main"
        case description = "description"
        case icon = "icon"
        case temp = "temp"
    }
        
    init(from decoder: Decoder) throws {
        
        let values = try decoder.container(keyedBy: CodingKeys.self)
        
        main = try values.decodeIfPresent(String.self, forKey: .main)
        description = try values.decodeIfPresent(String.self, forKey: .description)
        icon = try values.decodeIfPresent(String.self, forKey: .icon)
        temp = try values.decodeIfPresent(Int.self, forKey: .temp)
    }
}

这是模特

import UIKit
import Alamofire

class WeatherViewModel{
    
    var modelWeather = [WeatherModel]()
    
    weak var vc: ViewController?
    
    func getWeather() {
        
        AF.request("http://api.openweathermap.org/data/2.5/weather?q="+(vc?.cityTextField.text)!+"&units=metric&appid=88236c7916643a06e2cd64d56f4e5077", method: .get).response{
            
            response in
            
            debugPrint(response)
            if let data = response.data
            {
                do{
                    let apiResponse = try JSONDecoder().decode(WeatherModel.self, from: data)
                    self.modelWeather.append(apiResponse)

                    debugPrint(apiResponse)
                    DispatchQueue.main.async {
                        
                        self.vc?.reloadInputViews()
                    }
                }catch let error{
                    print(error.localizedDescription)
                }
            }
        }
        
        
    }
}

{"coord":{"lon":67.0822,"lat":24.9056},"weather":[{"id":800,"main":"Clear","description":"clear sky","icon":"01d"}],"base":"stations","main":{"temp":28,"feels_like":27.67,"temp_min":28,"temp_max":28,"pressure":1014,"humidity":44},"visibility":6000,"wind":{"speed":2.57,"deg":50},"clouds":{"all":0},"dt":1616474499,"sys":{"type":1,"id":7576,"country":"PK","sunrise":1616463159,"sunset":1616507028},"timezone":18000,"id":1174872,"name":"Karachi","cod":200}

这是回应，但在api回应中有错误。

Answer 1

良好的第一步是正确建模 Main。我检查了评论中使用的虚拟数据，您的 main 属性缺少 main 词典中的嵌套词典。您可以通过简单地创建一个映射每个字典 key/value 对的结构来映射它。

struct Main: Codable {
    let temp: Double
    let feels_like: Double
    let temp_min: Double
    // Continue to add the rest of the dictionaries here.
}

完成后，将此结构添加到您的属性并使其成为 Main 类型，如下所示：

var main: Main

此外，您不需要添加 CodingKeys，除非您的属性的命名与从服务器返回的属性名称不同。

编辑

如果你想找回

var description:String!
var icon:String!

您还需要创建一个 Weather 结构。

希望这对您有所帮助，您可以找出 WeatherModel 对象的其余映射。

无法读取数据，因为 openweathermap 的格式不正确 api

The data couldn’t be read because it isn’t in the correct format with openweathermap api

json

mvvm

ios

swift

openweathermap