json - 将 json 集合响应映射到 swift 对象类的简单方法

Question

我尝试了很多库，Alamofire、JsonHelper、ObjectMapper 等...，但不幸的是，我无法将 json 集合响应映射到对象类中。 我正在使用 swift 1.2 和 xcode 6.3 开发一个 IOS 8 应用程序，我的模型的两个类是:

Club.swift

class Club { 

    var id: String = ""
    var name: String = ""
    var imageUrl: String = ""
    var hasVip: Bool = false
    var desc: String = ""
    var location: [Location] = []

}

位置.swift

class Location {

    var country: String = ""
    var city: String = ""
    var address: String = ""
    var zip: String = ""
    var underground: [String] = []

}

我还有另一个类要向我的 API 请求:

apliClient.swift

class ApiClient {

    var clubs = [Club]?()


    func getList(completionHandler: ([JSON]) -> ()) {
        let URL = NSURL(string: "https://api.com/v1/clubs")
        let mutableURLRequest = NSMutableURLRequest(URL: URL!)

        mutableURLRequest.setValue("Content-Type", forHTTPHeaderField: "application/json")
        mutableURLRequest.HTTPMethod = "GET"
        mutableURLRequest.setValue("Bearer R01.iNsG3xjv/r1LDkhkGOANPv53xqUFDkPM0en5LIDxx875fBjdUZLn1jtUlKVJqVjsNwDe1Oqu2WuzjpaYbiWWhw==", forHTTPHeaderField: "Authorization")

        let manager = Alamofire.Manager.sharedInstance
        let request = manager.request(mutableURLRequest)

        request.responseJSON { (request, response, json , error) in
            if (json != nil){
                var jsonObj = JSON(json!)
                if let data = jsonObj["hits"].arrayValue as [JSON]?{
                    completionHandler(data)
                }
            }
        }
    }
}

我认为，有一种简单的方法可以快速映射对象。我想知道，如何返回转换为[Club]对象的completionHandler(data)？

让 data = jsonObj["hits"].arrayValue 为 [JSON]？ 是

[{
  "_id" : "5470def9e0c0be27780121d7",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/5470def9e0c0be27780121d7_180.png",
  "name" : "Mondo",
  "hasVip" : false,
  "location" : {
    "city" : "Madrid"
  }
}, {
  "_id" : "540b2ff281b30f3504a1c72f",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540b2ff281b30f3504a1c72f_180.png",
  "name" : "Teatro Kapital",
  "hasVippler" : false,
  "location" : {
    "address" : "Atocha, 125",
    "city" : "Madrid"
  }
}, {
  "_id" : "540cd44581b30f3504a1c73b",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540cd44581b30f3504a1c73b_180.png",
  "name" : "Charada",
  "hasVippler" : false,
  "location" : {
    "address" : "La Bola, 13",
    "city" : "Madrid"
  }
}]

Answer 1

您可以使用 ObjectMapper 来执行此操作您上面提到的图书馆。只需创建 Club类并确保它实现 Mappable协议(protocol)。然后就可以使用ObjectMapper来映射数据了:

let clubs = Mapper<Club>().mapArray(JSONString)

全面披露:我是 ObjectMapper 的作者。