发送POST请求，并将接收到的数据放在MKMapView上

Question

我有一台运行node.js的服务器，该服务器的URL上包含一组地理数据。我想从iOS应用程序向其发送POST请求，并用点填充我的应用程序地图。数据的结构如下：

{
   'lat': 13.37,
   'long': 42.00,
   'name': 'epic geographic datapoint'
}

我想说我已经尝试过一些东西，但是我在这里完全迷路了。我是iOS开发的新手，但这是我的代码：

class ViewController: UIViewController, CLLocationManagerDelegate {

    let manager = CLLocationManager()

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let location = locations[0]
        let userCurrentLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)
        let region = MKCoordinateRegion.init(center: userCurrentLocation, latitudinalMeters: 100, longitudinalMeters: 100);
        map.setRegion(region, animated: true)

    }

    //MAP
    @IBOutlet var map: MKMapView!
    override func viewDidLoad() {
        super.viewDidLoad()
        manager.delegate = self
        manager.desiredAccuracy = kCLLocationAccuracyBest
        manager.requestWhenInUseAuthorization();
        manager.startUpdatingLocation();
        // Do any additional setup after loading the view.
    }

    //POST an endpoint and populate the MKMapView


}```

Thanks

Answer 1

使用URLSession，请求看起来像这样：

import Foundation

var semaphore = DispatchSemaphore (value: 0)

let parameters = "{\n    \"lat\": 13.37,\n    \"long\": 42,\n    \"name\": \"epic geographic datapoint\"\n}"
let postData = parameters.data(using: .utf8)

var request = URLRequest(url: URL(string: "https://insertURL.com")!,timeoutInterval: Double.infinity)
request.httpMethod = "POST"
request.httpBody = postData

let task = URLSession.shared.dataTask(with: request) { data, response, error in 
  guard let data = data else {
    print(String(describing: error))
    return
  }

  // for this example print the response
  print(String(data: data, encoding: .utf8)!)
  semaphore.signal()
}

task.resume()
semaphore.wait()