Swift 原生网络请求

iOS HTTP请求原生组要的类是URLSession，是一个单例类。

• 例1：GET

func makeLogon() {
   
   
	// 构建URL
    let url:URL = URL(string: "https://xxx/xxx/API?xxx")!
    // 发送HTTP请求的的session对象
    let session = URLSession.shared
    // 构建请求request
    var request = URLRequest(url: url)
    request.httpMethod = "GET"
    // 发一个get请求
    let task = session.dataTask(with: request as URLRequest) {
   
   (
        data, response, error) in
        
        guard let data = data, let _:URLResponse = response, error == nil else {
   
   
            print("error"