Alamofire response contain text before JSON content use it with SwiftyJSON - json

Question

I'm requesting a JSON object with Alamofire and accessing it with SwiftyJSON.
The response of my request is this :
// JSON webservice ...
[
{
"message":"Please connect"
}
]
As you can see I need to remove the string "// JSON webservice ..." because it is actually not a valid JSON object.
Note that I'm using the .responseString otherwise I could not remove the string part.
So in order to remove the string I'm doing :
let jsonString = data?.stringByReplacingOccurrencesOfString("// JSON webservice ...", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
Now I'm with my String I can do :
var json = SwiftyJSON.JSON(jsonString!)
and I can print the json :
println(json)
BUT whatever I print a value
println(json[0]["message"].string)
is nil.

Answer 1

I finally found myself a solution :
We get our string (data) from the .responseString method
We remove the part that cause the fail of the serialization of the JSON object
We convert our string to NSData and try to serialize our JSON object :
let data = jsonString?.dataUsingEncoding(NSUTF8StringEncoding)
let jsonData = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSArray?
Now it should be fine and everything is working when trying to print a value of the JSON object
var json = SwiftyJSON.JSON(jsonData!)
println(json[0]["message"])
It prints the right value.