如何快速解析从Web服务返回的JSON

Question

Hey i am new to swift and I need to parse this JSON and get the value of "name" returned from a webservice:

{name = "Sameer Hussain";}

Here is my code so far:

    var url: NSURL = NSURL(string: "http://xxxxxxxxx.com/xxxxx/xxxx.php")!
    var request:NSMutableURLRequest = NSMutableURLRequest(URL:url)
    var bodyData = "data=something"
    request.HTTPMethod = "POST"
    //request.HTTPBody = bodyData.dataUsingEncoding(NSUTF8StringEncoding);
    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue())
    {
            (response, data, error) in
           // println(data)
            var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
            //println(strData)
            var err1: NSError?
            var json2 = NSJSONSerialization.JSONObjectWithData(strData!.dataUsingEncoding(NSUTF8StringEncoding)!, options: .MutableLeaves, error:&err1 ) as! NSDictionary!
            println("\(json2)")
    }

Answer 1

From the code above it seems like your data is being saved within the json2 variable. To retrieve a value from that variable you can try something like this.

var userName: String?
var userAge: Int?
var userEmail: String?

if let parseJSON = json2
            {
                 userName = parseJSON["name"] as? String
                 userAge  = parseJSON["age"] as? Int
                 userEmail = parseJSON["email"] as? String
            }

The above would work if your returned JSON looks something like this:

            {
                "name": "John"
                "age": "21"
                "email": "john@gmail.com"

            }