如何从 HttpClientHandler.CookieContainer 获取 cookie

Question

代码如下：

public static async Task<string> DownloadPageWithCookiesAsync(string url)
{
    HttpClientHandler handler = new HttpClientHandler();
    handler.UseDefaultCredentials = true;
    handler.AllowAutoRedirect = true;
    handler.UseCookies = true;
    handler.CookieContainer = new CookieContainer();
    HttpClient client = new HttpClient(handler);
    HttpResponseMessage response = await client.GetAsync(url);
    response.EnsureSuccessStatusCode();

    string responseBody = response.Content.ReadAsString();
    return responseBody;
}

client.GetAsync(url); 运行后，handler.CookieContainer 包含 7 个 cookie。我如何访问它们？

Answer 1

使用 CookieContainer 的 GetCookies 方法，指定您想要 cookie 的 URI。它返回一个您可以枚举的 CookieCollection。

Answer 2

尝试：

CookieCollection cookies = handler.CookieContainer.GetCookies(new Uri(/*Uri that the cookies are associated with*/));
for(int i = 0; i < cookies.Count; i++)
{
    Cookie c = cookies[i];
    //Do stuff with the cookie.
}

我相信，您还可以使用 foreach 循环迭代 CookieCollection。

Answer 3

CookieCollection cookies = handler.CookieContainer.GetCookies(/*blah-blah*/);
foreach (var cookie in cookies.OfType<System.Net.Cookie>())
{
    // process cookies
}

Answer 4

int loop1, loop2;
HttpCookieCollection MyCookieColl;
HttpCookie MyCookie;

MyCookieColl = Request.Cookies;

// Capture all cookie names into a string array.
String[] arr1 = MyCookieColl.AllKeys;

// Grab individual cookie objects by cookie name.
for (loop1 = 0; loop1 < arr1.Length; loop1++) 
{
   MyCookie = MyCookieColl[arr1[loop1]];
   Response.Write("Cookie: " + MyCookie.Name + "<br>");
   Response.Write ("Secure:" + MyCookie.Secure + "<br>");

   //Grab all values for single cookie into an object array.
   String[] arr2 = MyCookie.Values.AllKeys;

   //Loop through cookie Value collection and print all values.
   for (loop2 = 0; loop2 < arr2.Length; loop2++) 
   {
      Response.Write("Value" + loop2 + ": " + Server.HtmlEncode(arr2[loop2]) + "<br>");
   }
}