webrequest在.net内核中的实现

在.net core中工作时，我面临上述代码的问题

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您可以根据.net core转换代码吗？您可以将代码分为两部分：（1）HTTP响应检索和（2）解析

要获得XML响应，可以使用这样的方法

        WebRequest request = WebRequest.Create(Url);     
        request.Method = "POST";

        string postData = "XML=" + System.Net.WebUtility.UrlEncode(req);
        byte[] byteArray = Encoding.UTF8.GetBytes(postData);
        request.ContentType = "application/x-www-form-urlencoded";
        request.ContentLength = byteArray.Length;
        Stream dataStream = request.GetRequestStream();
        dataStream.Write(byteArray, 0, byteArray.Length);
        dataStream.Close();
        WebResponse response = request.GetResponse();
        dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream);
        string responseFromServer = reader.ReadToEnd();

        XmlDocument xmldoc = new XmlDocument();
        xmldoc.LoadXml(responseFromServer);
        XmlNodeList HotelDetailsResponse = xmldoc.SelectNodes("/Details");
        XmlNodeList Hotels = xmldoc.GetElementsByTagName("School");
        foreach (XmlNode node in Hotels)
        {

        }

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我曾经模拟API XML响应。

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    private async Task<string> GetXmlResponse(Uri uri, string postData)
    {
        using (var httpClient = new HttpClient())
        {
            var response = await httpClient.PostAsync(uri, new StringContent(postData));
            if (!response.IsSuccessStatusCode)
            {
                throw new Exception($"Error: {response.StatusCode}"); // TODO use specific exception
            }

            return await response.Content.ReadAsStringAsync();
        }
    }

    // Mocked API returns "<xml><hotels><School>s1</School><School>s2</School></hotels></xml>"
    var uri = new Uri("http://demo7162366.mockable.io/"); // TODO change to your URL
    var postData = "XML=" + System.Net.WebUtility.UrlEncode("<xml></xml>"); // TODO change to your content

    var xml = await GetXmlResponse(uri, postData);

    var doc = XDocument.Parse(xml);
    var hotelNodes = (from d in doc.Descendants()
            where d.Name.LocalName == "School"
            select d).ToList();

    foreach (var hotelNode in hotelNodes)
    {
            // TODO your logic
    }