Imports System.Net
Imports System.IO
Imports System.Text
Public Class Form1
Const ConnectURL = "http://www.raineggplant.com/logon.php"
Const HomeURL = "http://www.raineggplant.com"
Private Function RegularPage(ByVal URL As String, ByVal CookieJar As CookieContainer) As String
'携带CookieJar中的Cookie访问URL
Dim reader As StreamReader
Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)
Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"
Request.AllowAutoRedirect = False
Request.CookieContainer = CookieJar
Dim Response As HttpWebResponse = Request.GetResponse()
reader = New StreamReader(Response.GetResponseStream())
Return reader.ReadToEnd()
Response.Close()
End Function
Private Sub LogonPage(ByVal URL As String, ByRef CookieJar As CookieContainer, ByVal PostData As String)
'访问URL获取Cookie
Dim reader As StreamReader
Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)
Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"
Request.CookieContainer = CookieJar
Request.AllowAutoRedirect = False
Request.ContentType = "application/x-www-form-urlencoded"
PostData = "username=isiria&password=ceciestunmdp"
Request.Method = "POST"
Request.ContentLength = PostData.Length
Dim requestStream As Stream = Request.GetRequestStream()
Dim postBytes As Byte() = Encoding.ASCII.GetBytes(PostData)
requestStream.Write(postBytes, 0, postBytes.Length)
requestStream.Close()
Dim Response As HttpWebResponse = Request.GetResponse()
For Each tempCookie In Response.Cookies
CookieJar.Add(tempCookie)
Next
reader = New StreamReader(Response.GetResponseStream())
Response.Close()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim CookieJar As New CookieContainer
Dim PostData As String
Try
'Logon
PostData = "username=admin&password=password"
LogonPage(ConnectURL, CookieJar, PostData)
'Homepage
RichTextBox1.AppendText(RegularPage(HomeURL, CookieJar))
Catch ex As Exception
MessageBox.Show(ex.Message.ToString)
End Try
End Sub
End Class
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