Swift 3 JsonSerialization

Question

代码

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
@IBAction func btnGirisYap(_ sender: Any) {
    let url = NSURL(string: "http://www.kerimcaglar.com/yemek-tarifi")!

    let task = URLSession.shared.dataTask(with: url as URL) { (data, response, error) -> Void in

        if let urlContent = data {

            do {

                let jsonResult = try JSONSerialization.jsonObject(with: urlContent, options: JSONSerialization.ReadingOptions.mutableContainers) as! [String:AnyObject]

                //print (jsonResult)
                self.txtGirisKullaniciAdi.text  = jsonResult["malzemeler"] as! NSString as String    
            } catch {

                print("JSON serialization failed")
            }

        } else {

            print("ERROR FOUND HERE")
        }

    }

    task.resume()
    }
}

你能帮忙解决这个问题吗？

Answer 1

错误消息清楚地告诉您反序列化对象是数组而不是字典。

let jsonResult = try JSONSerialization.jsonObject(with: urlContent, options: []) as! [[String:Any]]
for item in jsonResult {
  print(item["malzemeler"] as! String) // cast directly to String
}

注意：

• Swift 3中未指定的JSON字典类型为[String:Any]。
• mutableContainers选项在Swift中无用。