以编程方式登录到网页HTTPS（c＃）

Question

我试图以编程方式登录到网页，我有任何喜悦。我看了一下小提琴手，看看浏览器在做什么，但我正努力在代码中复制它。 这是迄今为止的代码。

private void VisitUrl() 
    { 

     string pageVisited = string.Empty; 
     CookieContainer cookies = new CookieContainer(); 


     //Go to login page so that we get a cookie 
     HttpWebRequest loginRequest = (HttpWebRequest)HttpWebRequest.Create("http://www.apage.com/login.asp"); 

     loginRequest.UseDefaultCredentials = true; 
     loginRequest.UserAgent = Constants.usrAgentIE8; 
     loginRequest.CookieContainer = cookies; 
     loginRequest.AllowAutoRedirect = false; 

     HttpWebResponse loginResponse = (HttpWebResponse)loginRequest.GetResponse(); 


     string guid = Regex.Match(loginResponse.Headers["Set-Cookie"], Constants.guidRegex).Value; 
     guid = guid.Replace("%2D", "-"); 

     //Now that we have the cookie we can do a proper login 
     HttpWebRequest doLogin = (HttpWebRequest)HttpWebRequest.Create("https://secure.apage.com/express/login.asp"); 

     //doLogin.UseDefaultCredentials = true; 
     doLogin.UserAgent = Constants.usrAgentIE8; 
     doLogin.Method = Constants.verbPOST; 
     doLogin.ContentType = Constants.contTypeURLenc; 
     doLogin.AllowAutoRedirect = false; 



     using (StreamWriter sw = new StreamWriter(doLogin.GetRequestStream())) 
     { 
      sw.Write("usr=user&pass=" + Constants.pass + "&mc=1&guid=" + guid + "&dbnum=0&ic=1&task=dologin&app=library&x=32&y=10"); 

     } 

     doLogin.CookieContainer = cookies; 
     doLogin.Referer = "http://www.apage.com/login.asp"; 

     HttpWebResponse Response = (HttpWebResponse)doLogin.GetResponse(); 

     string resphead = Response.Headers["Set-Cookie"]; 

     string resp = Response.StatusCode.ToString(); 

     using (StreamReader sr = new StreamReader(Response.GetResponseStream())) 
     { 
      string textresponse = sr.ReadToEnd(); 

     } 


     HttpWebRequest Request = (HttpWebRequest)HttpWebRequest.Create("http://www.apage.com/toc.aspx?id=40729"); 
     Request.UserAgent = Constants.usrAgentIE8; 
     Request.UseDefaultCredentials = true; 
     Request.CookieContainer = cookies; 

     using (HttpWebResponse urlResponse = (HttpWebResponse)Request.GetResponse()) 
     { 
      using (StreamReader reader = new StreamReader(urlResponse.GetResponseStream())) 
      { 
       pageVisited = reader.ReadToEnd(); 

      } 

     } 

    } 

我的问题是，当我尝试第三请求，http://www.apage.com/toc.aspx?id=40729，它只是缺少一个cookie，它似乎我回到登录页面。这是一次成功的登录与小提琴手浏览器：

1 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
2 200 HTTPS secure.apage.com /express/login.asp 3,253 private  text/html iexplore:5908   
3 200 HTTPS secure.apage.com /express/zarketing.css 13,340  text/css iexplore:5908   
4 200 HTTPS secure.apage.com /express/images/_loadingtext.gif 798  image/gif iexplore:5908   
5 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
6 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
7 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
8 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
9 200 HTTP CONNECT secure.apage.com:443 0   iexplore:5908   
10 200 HTTPS secure.apage.com /express/images/_loadingbox1.gif 66  image/gif iexplore:5908   
11 200 HTTPS secure.apage.com /express/images/_loadingbox5.gif 66  image/gif iexplore:5908   
12 200 HTTPS secure.apage.com /express/images/_loadingbox4.gif 100  image/gif iexplore:5908   
13 200 HTTPS secure.apage.com /express/images/_loadingbox2.gif 66  image/gif iexplore:5908   
14 200 HTTPS secure.apage.com /express/images/_loadingbox3.gif 66  image/gif iexplore:5908   
15 302 HTTP www.apage.com /authenticate.asp?ticket=2ECCC1686F49BE35E14556E76EFCBF3E478157F89B826A03C421883BE61BB634D8DDDB25F8943414252CE46C27B1FAE837B802A7BD1EE9723ECDCB99B7D3D1DB60FAB3042D0D632BF1C41BA622C2546E&mc=1 142 max-age=0, no-cache, no-store Expires: Fri, 10 Jun 2011 09:04:21 GMT text/html iexplore:5908   
16 200 HTTP www.apage.com /toc.aspx?id=40729 86,179 max-age=0, no-cache, no-store Expires: Fri, 10 Jun 2011 09:04:22 GMT text/html; charset=utf-8 iexplore:5908   

请求15是一个重定向和这个请求已经丢失的饼干，但我不知道这个cookie是如何创建的。它似乎没有出现在我的第二个请求https://secure.apage.com/express/login.asp的响应中，我在调试时看过。

我是否需要为所有GIF提出请求？

任何想法？

TIA

Answer 1

您是否尝试过使用

doLogin.AllowAutoRedirect = true; 

HTTP状态代码302（15行）显示，文件已被 '暂时移动'。您可能需要允许重定向。

另外，cookie信息也可以在Headers集合属性中传递。查看响应的Headers.Keys集合中的任何名称，如“cookie”。例如，我必须登录的网站使用名称“Set-Cookie”。我得到这样的值：

if (response.Headers["Set-Cookie"] != null) 
{ 
    Match match = Regex.Match(response.Headers["Set-Cookie"].ToString(), @"(?'Name'\w+) 
=(?'Value'\w+).+=(?'Path'[\s\S]+)"); 
    if (match.Success) 
    { 
     Cookie cookie = new Cookie(match.Groups["Name"].ToString(), 
match.Groups["Value"].ToString(), match.Groups["Path"].ToString(), "domain.name.com"); 
     cookies.Add(cookie); 
    } 
}