将NSData转换为可读的JSON格式Swift

时间:2016-10-17 20:40:35

标签: ios json swift2 swift3 nsdata

我从Google Calendar Free / Busy API中提取数据。我在POST响应中获得的JSON数据被编码为NSData,转换为String但我看不到完整的响应。我无法将NSData转换为可以看到Google的整个响应的格式。

这是Google的预期回复:

{
 "kind": "calendar#freeBusy",
 "timeMin": "2016-10-17T17:40:00.000Z",
 "timeMax": "2016-10-17T17:45:00.000Z",
 "calendars": {
  "ID_REDACTED@resource.calendar.google.com": {
   "busy": [
    {
     "start": "2016-10-17T17:40:00Z",
     "end": "2016-10-17T17:45:00Z"
    }
   ]
  }
 }
}

但我只能在回复中看到这么多数据:

responseString = {
 "kind": "calendar#freeBusy",
 "timeMin": "2016-10-17T17:40:00.000Z",
 "timeMax": "2016-10-17T17:45:00.000Z"
}

我无法弄清楚如何在日历之后公开JSON响应的最后部分:'

这是我的代码:

func fetchEvents() {
        for (calID,_) in dict {
            let request = NSMutableURLRequest(URL: NSURL(string: "https://www.googleapis.com/calendar/v3/freeBusy?access_token=\(GIDSignIn.sharedInstance().currentUser.authentication.accessToken)")!)
            request.HTTPMethod = "POST"
            request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")

            let jsonObject: [String:AnyObject] = [
                "timeMin" : "2016-10-17T10:40:00-07:00",
                "timeMax" : "2016-10-17T10:45:00-07:00",
                "items" : [
                    "id" : "\(calID)"
                ],

                ]

            do {
                let data1 =  try NSJSONSerialization.dataWithJSONObject(jsonObject, options: NSJSONWritingOptions.PrettyPrinted)
                let convertedString = String(data: data1, encoding: NSUTF8StringEncoding)
                json = convertedString!

            } catch let myJSONError {
                print(myJSONError)
            }

            request.HTTPBody = json.dataUsingEncoding(NSUTF8StringEncoding)
            let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error in
                guard error == nil && data != nil else {
                    print("error=\(error)")
                    return
                }

                if let httpStatus = response as? NSHTTPURLResponse where httpStatus.statusCode != 200 {
                    print("statusCode should be 200, but is \(httpStatus.statusCode)")
                    print("response = \(response!)")
                }

                let responseString = String(data: data!, encoding: NSUTF8StringEncoding)
                print("responseString = \(responseString!)")
            }
            task.resume()
        }
    }

我已经尝试过NSJSONSerialization.dataWithJSONdata而没有运气。我认为因为NSData在这里被转换为String:

let responseString = String(data: data!, encoding: NSUTF8StringEncoding)

它没有显示完整的JSON响应。我觉得数据需要被转换为[String:AnyObject],但我并不是100%肯定。

感谢您的帮助!

1 个答案:

答案 0 :(得分:2)

let responseString = String(data: data!, encoding: NSUTF8StringEncoding)不对响应应用任何魔法,它只是将服务器发送的字节转换为字符。如果你没有看到你期望看到的东西,那是因为服务器没有发送它。