iPhone应用程序如何与服务器交互

iPhone应用程序如何与服务器交互？

swift
// 创建一个URL对象
let url = URL(string: "http://www.example.com/data")
// 创建一个URL请求对象
let request = URLRequest(url: url!)
// 创建一个NSURLSession对象
let session = URLSession.shared
// 创建一个数据任务
let dataTask = session.dataTask(with: request) { (data, response, error) in
    if let error = error {
        print("请求失败：\(error)")
    } else if let data = data {
        let responseString = String(data: data, encoding: .utf8)
        print("服务器响应：\(responseString)")
    }
}
// 启动任务
dataTask.resume()

swift
if let data = data {
    do {
        let jsonObject = try JSONSerialization.jsonObject(with: data, options: .allowFragments)
        if let dictionary = jsonObject as? [String: Any] {
            if let name = dictionary["name"] as? String {
                print("名称：\(name)")
            }
        }
    } catch {
        print("解析JSON数据失败：\(error)")
    }
}