这让我发疯。我知道我必须接近这一点。据我所知，我的请求与真实请求匹配，只是 cookie 有点不同。我似乎错过了谷歌分析。不确定这是否是问题所在。我像我应该的那样被重定向，但在重定向页面上它要求我再次登录。任何帮助表示赞赏。这是我的代码：
Private Function eaLogin(ByVal ticker As String, ByVal password As String)
Try
ServicePointManager.Expect100Continue = False
Dim request As HttpWebRequest = httpWebRequest.Create("http://www.empireavenue.com")
request.Credentials = CredentialCache.DefaultCredentials
request.CookieContainer = cookieJar
Dim response As HttpWebResponse = request.GetResponse()
Dim dataStream As Stream = response.GetResponseStream()
Dim reader As New StreamReader(dataStream)
Dim responseFromServer As String = reader.ReadToEnd()
reader.Close()
response.Close()
Dim session As String = ""
ServicePointManager.Expect100Continue = False
'Set the initial parameters
Dim UserID As String = ticker ' Username
Dim PWord As String = HttpUtility.UrlEncode(password) ' Password
Dim domain As String = "https://www.empireavenue.com/user/login/do"
Dim encoding As New System.Text.ASCIIEncoding
' Use the appropriate HTML field names to stuff into the post header
Dim PostData As String = _
"login_username=" & ticker & _
"&login_password=" & PWord
Dim Data() As Byte = encoding.GetBytes(PostData)
' Initialise the request
Dim LoginReq As Net.HttpWebRequest = Net.WebRequest.Create(domain) ' Login location taken from the form action
With LoginReq
.KeepAlive = True
.Method = "POST"
' Note: if the page uses a redirect if will fail
.AllowAutoRedirect = False
.ContentType = "application/x-www-form-urlencoded"
.ContentLength = Data.Length
' Set empty container
.CookieContainer = cookieJar
.Referer = "http://www.empireavenue.com/"
.UserAgent = userAgent
.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
.Host = "www.empireavenue.com"
End With
' Add the POST data
Dim SendReq As IO.Stream = LoginReq.GetRequestStream
LoginReq.Headers.Add("Accept-Language", "en-US,en;q=0.5")
LoginReq.Headers.Add("Accept-Encoding", "gzip, deflate")
SendReq.Write(Data, 0, Data.Length)
SendReq.Close()
' Obtain the response
Dim LoginRes As Net.HttpWebResponse = LoginReq.GetResponse()
' Retreive the headers from the request (e.g. the location header)
Dim Redirect As String = LoginRes.Headers("Location")
' Add any returned cookies to the cookie collection
cookieJar.Add(LoginRes.Cookies)
' Move to the redirected page as a GET request...
Dim newUrl As String = ""
If Not (Redirect Is Nothing) Then
If Redirect.StartsWith("http://") Then
newUrl = Redirect
Else
newUrl = "https://www.empireavenue.com" & Redirect
End If
LoginReq = Net.WebRequest.Create(newUrl)
With LoginReq
.KeepAlive = False
.Method = "GET"
.ContentType = "application/x-www-form-urlencoded"
.AllowAutoRedirect = True
.CookieContainer = cookieJar
End With
' Perform the navigate and output the HTML
LoginRes = LoginReq.GetResponse()
Dim sReader As IO.StreamReader = New IO.StreamReader(LoginRes.GetResponseStream)
Dim HTML As String = sReader.ReadToEnd
If HTML.Contains(ticker) Then
MessageBox.Show("yay!")
Return True
Else
MessageBox.Show("no!")
Return False
End If
Else
MessageBox.Show("no too!")
Return False
End If
Catch ex As Exception
MessageBox.Show(ex.Message.ToString)
Return False
End Try
End Function