在swift 3中写入文件将数据从json转换为xml

Question

注意下面的猫是从服务器返回的json类型，当我使用try! cats?.write(toFile: file, atomically: false) 该文件包含一个xml输出，而我需要保持为json，非常感谢任何帮助！

let text = ""
try! text.write(toFile: file, atomically: false, encoding: String.Encoding.utf8)

let parameters : NSMutableDictionary? = [`enter code here`]

let manager = AFHTTPSessionManager()

manager.post("http://appsandgamesinc.com/api/AppAsUser/getMedias/", parameters: parameters, progress: nil, success: { (task: URLSessionTask, responseObject) in
      let response = responseObject as? NSDictionary
      let medias = response?.object(forKey: "medias") as? NSDictionary

      let cats = medias as? NSDictionary
      print("cats:\(cats)")
NSKeyedArchiver.archivedData(withRootObject: medias)

      try! cats?.write(toFile: file, atomically: false)

      print("file://"+file)
})

Answer 1

猫的类型是NSDictionary，如果你想将JSON保存在文件中，然后使用数据保存。 Swift 也可以使用 Swift 的原生 Dictionary 和 Array 而不是 NSDictionary 和 NSArray。

manager.post("http://appsandgamesinc.com/api/AppAsUser/getMedias/", parameters: parameters, progress: nil, success: { (task: URLSessionTask, responseObject) in
    if let response = responseObject as? [String:Any],
        let medias = response["medias"] as? [String:Any] {

        if let data = try? JSONSerialization.data(withJSONObject: medias) {
            try? data.write(to: URL(fileURLWithPath: file), options: .atomic)
        }
        print("cats:\(cats)")
        NSKeyedArchiver.archivedData(withRootObject: medias)                      
        print("file://"+file)
    }
})