C# 从httpwebrequest切换到httpclient，我可以'；我不知道如何发送我的标题？

这就是我使用的代码

    string URL = "http://www.test.com/posts/.json";
    var getInfo = (HttpWebRequest)HttpWebRequest.Create(URL);{
    getInfo.Headers["Cookie"] = CookieHeader;
    getInfo.ContentType = "application/x-www-form-urlencoded";
    using (WebResponse postStream = await getInfo.GetResponseAsync())
    {
        StreamReader reader = new StreamReader(postStream.GetResponseStream());
        string str = reader.ReadToEnd();
    }

我想切换到httpclient，我已经开始工作了，只是它不传递Cookie信息。我得到了信息，但只是匿名信息。不是我发送给用户的信息。这是我目前拥有的

    HttpClient client = new HttpClient();
    client.DefaultRequestHeaders.Accept.Add(
    new MediaTypeWithQualityHeaderValue("application/json"));
    client.BaseAddress = new Uri("http://www.test.com/");
    client.DefaultRequestHeaders.Add("Cookie", CookieHeader);
    HttpResponseMessage response = await client.GetAsync("http://www.test.com" + URL);
    string str;
    str = await response.Content.ReadAsStringAsync();

---

您需要使用

HttpClientHandler

，将cookie添加到其中，然后将其传递到

HttpClient

的构造函数中

例如：

    Uri baseUri = new Uri("http://www.test.com/");
    HttpClientHandler clientHandler = new HttpClientHandler();
    clientHandler.CookieContainer.Add(baseUri, new Cookie("name", "value"));
    HttpClient client = new HttpClient(clientHandler);
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    client.BaseAddress = baseUri;
    HttpResponseMessage response = await client.GetAsync("http://www.test.com" + URL);
    string str2 = await response.Content.ReadAsStringAsync();

我发现了对相同行为的引用，指出在

DefaultRequestHeaders

中名为“Cookie”的头被忽略，并且不会被发送，但似乎任何其他值都会按预期工作