ios - URLSession 函数类似于Alamofire 的responseString？

Question

因为我使用的是 cocoapods 并且有必要的 Objective-C 依赖项，所以我不能使用框架，因此不能使用 Alamofire...Alamofire 有一个函数 responseString(见下面的代码)，所以我需要使用 URLSession 在本地执行此操作，我怎样才能做到这一点？

 Alamofire.request(testURL).responseString { response in
        print("\(response.result.isSuccess)")
        if let html = response.result.value {
            parseHTML(html: html)
        }
    }

Alamofire:

extension DataRequest {
    /// Creates a response serializer that returns a result string type initialized from the response data with
    /// the specified string encoding.
    ///
    /// - parameter encoding: The string encoding. If `nil`, the string encoding will be determined from the server
    ///                       response, falling back to the default HTTP default character set, ISO-8859-1.
    ///
    /// - returns: A string response serializer.
    public static func stringResponseSerializer(encoding: String.Encoding? = nil) -> DataResponseSerializer<String> {
        return DataResponseSerializer { _, response, data, error in
            return Request.serializeResponseString(encoding: encoding, response: response, data: data, error: error)
        }
    }

    /// Adds a handler to be called once the request has finished.
    ///
    /// - parameter encoding:          The string encoding. If `nil`, the string encoding will be determined from the
    ///                                server response, falling back to the default HTTP default character set,
    ///                                ISO-8859-1.
    /// - parameter completionHandler: A closure to be executed once the request has finished.
    ///
    /// - returns: The request.
    @discardableResult
    public func responseString(
        queue: DispatchQueue? = nil,
        encoding: String.Encoding? = nil,
        completionHandler: @escaping (DataResponse<String>) -> Void)
        -> Self
    {
        return response(
            queue: queue,
            responseSerializer: DataRequest.stringResponseSerializer(encoding: encoding),
            completionHandler: completionHandler
        )
    }
}

Answer 1

获取的基本代码success 和 value / html 来自 URLSessionDataTask 的值是

dataTask(url: url) { (data, response, error) in

   guard error == nil else { 
      print(error!)
      // handle error
      return 
   }

   let success : Bool
   let html : String

   if let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200 {
      success = true
      html = String(data:data!, encoding: .utf8)! // or .isoLatin1
   } else {
      success = false
      print("http response error")
      html = ""
   }

   print(html, success)
}

它采用标准文本编码 (utf8)。和 URLRequest只需要 POST请求。