vb.net httpwebrequest登录empiraeAvenue.com

这快把我逼疯了。我知道我必须接近这一点。我的请求与我所能看到的真实请求相匹配，只是cookies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。我得到重定向，就像我应该，但在重定向页面上，它要求我再次登录。感谢您的帮助。这是我的密码：

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

---

由于工作上的限制，我无法在Empiraevenue上尝试，但请尝试以下方法：

Dim tempCookies As CookieContainer

ServicePointManager.Expect100Continue = False
Dim postReq As HttpWebRequest = DirectCast(WebRequest.Create("https://www.empireavenue.com/user/login/do"), HttpWebRequest)
Dim postData As String = "login_username=" & ticker & "&login_password=" & PWord
Dim encoding As New UTF8Encoding
Dim byteData As Byte() = encoding.GetBytes(postData)
postReq.Method = "POST"
postReq.KeepAlive = True
postReq.CookieContainer = tempCookies
postReq.ContentType = "application/x-www-form-urlencoded"
postReq.Referer = "http://www.empireavenue.com/"
postReq.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120427 Firefox/15.0a1"
postReq.ContentLength = byteData.Length
Dim postreqstream As Stream = postReq.GetRequestStream()
postreqstream.Write(byteData, 0, byteData.Length)
postreqstream.Close()
Dim postresponse As HttpWebResponse
postresponse = DirectCast(postReq.GetResponse(), HttpWebResponse)
tempCookies.Add(postresponse.Cookies)
logincookie = tempCookies
Dim postreqreader As New StreamReader(postresponse.GetResponseStream())
Dim thepage As String = postreqreader.ReadToEnd

---

希望它对您有用

谢谢SalemRady！这很有效，正是我所需要的。