未执行iOS中Swift的Rest API

Question

I am using REST API to get data from server using swift 2. When I call the function below, something happens, and the func getAllServiceName(data :NSData) is not executed. I tried many things but I did not have success.

func getServiceName () {
    let urlServiceName = NSURL(string: "urllinkOfMe")
    let request = NSURLRequest(URL: urlServiceName!)
    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) {(response, data, error) in
        self.getAllServiceName(data!)
    }
}

func getAllServiceName(data :NSData)
{
    let dictServicename: NSDictionary!=(try! NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers)) as! NSDictionary

    if(dictServicename["data"] != nil){
        let dataTable :NSArray = dictServicename.valueForKey("data") as! NSArray
        for var i = 0 ; i < dataTable.count ; i++
        {
            //pickOptionVas.addObject(dataTable[i].valueForKey("serviceName")!)
        }
    }
}

Answer 1

Here is what you used to get data from server by calling API:

func getServiceName () {

    let config = NSURLSessionConfiguration.defaultSessionConfiguration()
    let session = NSURLSession(configuration: config)

    let urlServiceName = NSURL(string: "http://188.166.232.101:1000/hs/vasService/getServiceName")
    let request = NSMutableURLRequest(URL: urlServiceName!)
    request.HTTPMethod = "GET"
    let postTask = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in

        print(data)
    })
    //This is necessary
    postTask.resume()
}

Go for the above code and let me know you are getting the data or not!

Answer 2

What's the response code? if you get 500 perhaps something wrong with your request parameter or your REST API is not implemented correctly.