Getting JSON from a Web API

let session = NSURLSession.sharedSession()
let url = NSURL(string: "http://swapi.co/api/people/1/")!

session.dataTaskWithURL(url) {(data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in

    guard let theResponse = response as? NSHTTPURLResponse 
        where theResponse.statusCode == 200 else {
        print("Error in response.")
        return
    }
    
    if let responseData = data {
        do {
            let json = try NSJSONSerialization.JSONObjectWithData(responseData, 
                                   options: NSJSONReadingOptions.AllowFragments)
            
            print(json)
        
        } catch {
            print("Could not serialize into json")
        }
    }
}.resume()

Very important, don't forget the .resume() at the end of the closure!

Now if you want to parse this JSON you can see this post on how to do it.
(Swift 2.2)