swift 官方获取JSON 数据方法
var url = NSURL(string: "http://www.weather.com.cn/data/sk/101120501.html")
var data = NSData(contentsOfURL: url!, options: NSDataReadingOptions.DataReadingUncached, error: nil)
var json : AnyObject! = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions(), error: nil)
var weatherinfo: AnyObject? = json.objectForKey("weatherinfo")
var city: AnyObject? = weatherinfo?.objectForKey("city")
// println(city)
swiftyJSON
//// // var url = NSURL(string: API_HOST+"/"+LOGIN_API)
////// var url = NSURL(string: "http://www.weather.com.cn/data/sk/101120501.html")
////// let data = NSData(contentsOfURL: url!, options: NSDataReadingOptions.DataReadingUncached, error: nil)
//////
////// // println(city)
////// let jsonS = JSON(data: data!)
////// println(jsonS)
////// println(jsonS[0]["weatherinfo"].string)
////// if let info = jsonS["weatherinfo"].string{
////// println(info)
////// }