如何连接iPhone和Web服务并获取XML数据？

import UIKit

class ViewController: UIViewController, XMLParserDelegate {

    var parser: XMLParser?
    var dataArray: [String] = []

    override func viewDidLoad() {
        super.viewDidLoad()

        let urlString = "https://example.com/data.xml"
        let url = URL(string: urlString)!
        let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
            guard let data = data else { return }
            self.parser = XMLParser(data: data)
            self.parser?.delegate = self
            self.parser?.parse()
        }
        task.resume()
    }

    func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) {
        if elementName == "item" {
            dataArray.append(attributeDict["name"]!)
        }
    }

    func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
        if elementName == "item" {
            // Handle the parsed data
        }
    }
}