使用C＃以编程方式登录到网页

Question

我想登录到网页http：//abc/mypage/config/login.aspx并获取http：//abc/mypage/config/config.aspx页面的html。 我使用过webrequest并尝试过，但是我总是在获取登录页面html。

WebRequest request = WebRequest.Create("http://abc/mypage/config/login.aspx");
request.Method = "POST";

string postData = "usernameTextBox=myUsername&passwordTextBox=myPassword";
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();
reader.Close();
dataStream.Close();
response.Close();

我对此请求的标头是：

接受
text / html，application / xhtml + xml，application / xml; q = 0.9， / ; q = 0.8 Accept-Encoding gzip，deflate Accept-Language zh-cn，en; q = 0.5 Connection keep-alive Cookie
ASP.NET_SessionId = nyifft45s13wni45bw0qer3z主机
192.168.174.16参考网址http：//abc/mypage/config/login.aspx用户代理Mozilla / 5.0（Windows NT 6.1; WOW64; rv：39.0）Gecko / 20100101 Firefox / 39.0

我需要通过此页面登录并获取config.aspx页面的html。

任何帮助将不胜感激。

谢谢。

Answer 1

我猜该网站正在根据您的代码和aspx页面使用表单身份验证。 尝试添加一个cookie容器

    Cookiecontainer cookies = new Cookiecontainer();

   //login request to get authentication cookies.
    WebRequest request = WebRequest.Create("http://abc/mypage/config/login.aspx");
    request.Method = "POST";
    request.cookiecontainer = cookies

    //your rest of the code

  //content request to get what you need
  WebRequest request = WebRequest.Create("http://abc/mypage/config/config.aspx");
    request.Method = "POST";
    request.cookiecontainer = cookies

   //same as before

如果通过cookie进行身份验证，则应该找回所需的东西。