关于iOS swift 解析json出现乱码

{
 CI1 = 1;
 CI2 = 3;
 CI3 = 6;
 CI4 = 8;
 CI5 = 9;
 CI6 = 12;
 CN1 = "14(1)";
 CN2 = "13(1)";
 CN3 = "13(2)";
 CN4 = "13(4)";
 CN5 = "12(4)";
 CN6 = "12(1)";
 GID1 = 13;
 GID2 = 12;
 GN1 = "\U6570\U5b66";
 GN2 = "\U7269\U7406";
 KEY = CGGpLHs;
 KN = "\U963f\U65af\U8482\U82ac";
 KS = 1;
 SC = 0;
 SUP = Y;
 TN = "\U8c2d\U52b2";
 tID = 1;
 }解析的结果，原本是字符串的数据都变成了乱码，例如kn和tn的数据原本是汉字，现在都成编码了。
 使用的是这个解析方式 
 http.post(url, mapPair: dict, completionHandler: {(data: NSData?, error: NSError?) -> Void in
        if (error != nil){

        println("error=\(error!.localizedDescription)")

        }else{

             let jsonDictionary: NSDictionary = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers, error: nil) as! NSDictionary

              println(data)
              println(jsonDictionary)
        }
    })