在.net 4.5中，尝试使用HttpClient使cookie退出响应时遇到困难
在.net 4.5中，尝试使用HttpClient使cookie退出响应时遇到困难
提问于 2012-11-10 08:48:17
我已经获得了以下成功运行的代码。我不知道如何从响应中取出cookie。我的目标是能够在请求中设置cookie，并从响应中获取cookie。有什么想法？
private async Task<string> Login(string username, string password)
{
try
{
string url = "http://app.agelessemail.com/account/login/";
Uri address = new Uri(url);
var postData = new List<KeyValuePair<string, string>>
{
new KeyValuePair<string, string>("username", username),
new KeyValuePair<string, string>("password ", password)
};
HttpContent content = new FormUrlEncodedContent(postData);
var cookieJar = new CookieContainer();
var handler = new HttpClientHandler
{
CookieContainer = cookieJar,
UseCookies = true,
UseDefaultCredentials = false
};
var client = new HttpClient(handler)
{
BaseAddress = address
};
HttpResponseMessage response = await client.PostAsync(url,content);
response.EnsureSuccessStatusCode();
string body = await response.Content.ReadAsStringAsync();
return body;
}
catch (Exception e)
{
return e.ToString();
}
}以下是完整的答案：
HttpResponseMessage response = await client.PostAsync(url,content);
response.EnsureSuccessStatusCode();
Uri uri = new Uri(UrlBase);
var responseCookies = cookieJar.GetCookies(uri);
foreach (Cookie cookie in responseCookies)
{
string cookieName = cookie.Name;
string cookieValue = cookie.Value;
}回答 4
Stack Overflow用户
回答已采纳
发布于 2012-11-10 09:05:20
要向请求添加cookie，请在请求之前使用CookieContainer.Add(uri, cookie)填充cookie容器。发出请求后，cookie容器将自动填充来自响应的所有cookie。然后，您可以调用GetCookies()来检索它们。
CookieContainer cookies = new CookieContainer();
HttpClientHandler handler = new HttpClientHandler();
handler.CookieContainer = cookies;
HttpClient client = new HttpClient(handler);
HttpResponseMessage response = client.GetAsync("http://google.com").Result;
Uri uri = new Uri("http://google.com");
IEnumerable<Cookie> responseCookies = cookies.GetCookies(uri).Cast<Cookie>();
foreach (Cookie cookie in responseCookies)
Console.WriteLine(cookie.Name + ": " + cookie.Value);
Console.ReadLine();Stack Overflow用户
发布于 2019-11-20 14:16:55
如果你不能访问HttpClient并且不能注入CookieContainer，还有另一种选择。这在.NET核心2.2中有效：
private string GetCookie(HttpResponseMessage message)
{
message.Headers.TryGetValues("Set-Cookie", out var setCookie);
var setCookieString = setCookie.Single();
var cookieTokens = setCookieString.Split(';');
var firstCookie = cookieTokens.FirstOrDefault();
var keyValueTokens = firstCookie.Split('=');
var valueString = keyValueTokens[1];
var cookieValue = HttpUtility.UrlDecode(valueString);
return cookieValue;
}Stack Overflow用户
发布于 2018-08-10 20:55:50
您可以使用给定的URL轻松获取Cookie值。
private async Task<string> GetCookieValue(string url, string cookieName)
{
var cookieContainer = new CookieContainer();
var uri = new Uri(url);
using (var httpClientHandler = new HttpClientHandler
{
CookieContainer = cookieContainer
})
{
using (var httpClient = new HttpClient(httpClientHandler))
{
await httpClient.GetAsync(uri);
var cookie = cookieContainer.GetCookies(uri).Cast<Cookie>().FirstOrDefault(x => x.Name == cookieName);
return cookie?.Value;
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/13318102
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