Unable to read data nsurl

Welcome all,

I'm having an issue with loading JSON data from an URL by NSURL class.

Unfortunately, it is not working even I give permission from the plist.

let urlstr = "MYURLgoes here"       
        let Url = NSURL(string:urlstr)!
        print(Url.absoluteString)
        let task = NSURLSession.sharedSession().dataTaskWithURL(Url) { (data, response, error)->Void in
            if let urlcontent=data
            {
                print(urlcontent)
            }
            else{print("NotExist")}
        }

I have tested my url and it is working perfectly.

Im really new to ios development,I would be thankful if some on can help me to figure this issue out