Question

我无法弄清楚使用Swift解码此JSON的方法。我试图遵循大量的教程和指南，但是没有任何适合我的东西。

我唯一能添加静态 CodingKeys 的东西是：“ especificaciones ”，“ id ”，“ titulo < / strong>“ 和” 默认“

"especificaciones" : { "EXTERIOR" : { "sistema_automatico_de_ajuste_de_altura_para_faros" : { "id" : "865", "titulo" : "Sistema automatico de ajuste de altura para faros", "default" : "" }, "antena_" : { "id" : "1366", "titulo" : "Antena ", "default" : "" }, "luces_direccionales_en_espejos_laterales" : { "id" : "734", "titulo" : "Luces direccionales en espejos laterales", "default" : "" }, "faros_traseros" : { "id" : "1430", "titulo" : "Faros traseros", "default" : "" }, }, "DIMENSIONES INTERIORES" : { "espacio_para_las_piernas___delantera_trasera" : { "id" : "1417", "titulo" : "Espacio para las piernas - delantera/trasera", "default" : "" }, "espacio_para_los_hombros____delantera_trasera" : { "id" : "1418", "titulo" : "Espacio para los hombros - delantera/trasera", "default" : "" }, "area_de_carga__l_" : { "id" : "1498", "titulo" : "Area de carga (L)", "default" : "" } }

}

这不是整个JSON，但也许您可以借此了解我要寻找的内容。

Answer 1

{ "especificaciones": { "RINES Y LLANTAS": { "llantas_delanteras": { "id": "935", "titulo": "Llantas delanteras", "default": "" }


private struct CustomCodingKeys: CodingKey {
    var stringValue: String
    init?(stringValue: String) {
        self.stringValue = stringValue
    }
    var intValue: Int?
    init?(intValue: Int) {
        return nil
    }
}

struct RootOutput {
    var entities:Entities?
    var mainRoot:String?
    var subRoot:String?
}


struct Root: Decodable {

    var rootLevel: SubTopRoot?

    init(from decoder: Decoder)  {
        do{
            let container = try decoder.container(keyedBy: CustomCodingKeys.self)
            for key in container.allKeys{
               rootLevel = try container.decodeIfPresent(SubTopRoot.self, forKey: CustomCodingKeys.init(stringValue: key.stringValue)!)
            }
        }catch{
            print(error.localizedDescription)
        }
    }
}

struct SubTopRoot: Decodable {

    var subTopLevel:SubRoot?

    init(from decoder: Decoder)  {
        do{
            let container = try decoder.container(keyedBy: CustomCodingKeys.self)
            for key in container.allKeys{
                subTopLevel = try container.decodeIfPresent(SubRoot.self, forKey: CustomCodingKeys.init(stringValue: key.stringValue)!)
                for index in 0..<(subTopLevel?.SubRootLevel.count ?? 0){
                    subTopLevel?.SubRootLevel[index].mainRoot = key.stringValue
                }
           }
        }catch{
            print(error.localizedDescription)
        }
    }


}

struct SubRoot: Decodable {

    var SubRootLevel:[RootOutput] = [RootOutput]()

    init(from decoder: Decoder)  {
        do{
            let container = try decoder.container(keyedBy: CustomCodingKeys.self)
            for key in container.allKeys{
                let entities = try container.decodeIfPresent(Entities.self, forKey: CustomCodingKeys.init(stringValue: key.stringValue)!)
                SubRootLevel.append(RootOutput.init(entities: entities, mainRoot:"" , subRoot: key.stringValue))
            }

        }catch{
            print(error.localizedDescription)
        }
    }

}

struct Entities: Codable {
    var id: String?
    var titulo: String?
    var defaultItem: String?

    init(from decoder: Decoder)  {
        do{
            let container = try decoder.container(keyedBy: CodingKeys.self)
                self.id = try container.decodeIfPresent(String.self, forKey: .id)
                self.titulo = try container.decodeIfPresent(String.self, forKey: .titulo)
                self.defaultItem = try container.decodeIfPresent(String.self, forKey: .defaultItem)


        }catch{
            print(error.localizedDescription)
        }
    }

    enum CodingKeys: String, CodingKey {
        case id = "id"
        case titulo = "titulo"
        case defaultItem = "default"
    }
}

希望这对您有帮助！

//Dummy Test
   do {

            let dataString = "{\r\n\t\"especificaciones\": {\r\n\t\t\"RINES Y LLANTAS\": {\r\n\t\t\t\"llantas_delanteras\": {\r\n\t\t\t\t\"id\": \"935\",\r\n\t\t\t\t\"titulo\": \"Llantas delanteras\",\r\n\t\t\t\t\"default\": \"\"\r\n\t\t\t},\r\n\t\t\t\"llantas_traseras\": {\r\n\t\t\t\t\"id\": \"936\",\r\n\t\t\t\t\"titulo\": \"Llantas traseras\",\r\n\t\t\t\t\"default\": \"\"\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n}"
            let data = Data(dataString.utf8)
            //here dataResponse received from a network request
            let decoder = JSONDecoder()
            let model = try decoder.decode(Root.self, from:data) //Decode JSON Response Data
            print(model.rootLevel?.subTopLevel?.SubRootLevel)
        } catch let parsingError {
            print("Error", parsingError)
        }

    }

使用动态CodingKeys在Swift中解码JSON

1 个答案: