我想要VB.net WebClient记住cookie。
我已经搜索并尝试过大量重载类。
我想通过POST登录到一个网站,然后POST到另一个页面,并获得其内容,同时仍保留我的会话。
这是可能的VB.net没有使用WebBrowser控件?
我尝试Chilkat.HTTP,它的工作原理,但我想使用.Net库。
创建一个从WebClient继承的新类,它存储像@Guffa这样的CookieContainer。这里是我使用的代码,它也保持引用者的生存:
Public Class CookieAwareWebClient Inherits WebClient Private cc As New CookieContainer() Private lastPage As String Protected Overrides Function GetWebRequest(ByVal address As System.Uri) As System.Net.WebRequest Dim R = MyBase.GetWebRequest(address) If TypeOf R Is HttpWebRequest Then With DirectCast(R,HttpWebRequest) .CookieContainer = cc If Not lastPage Is Nothing Then .Referer = lastPage End If End With End If lastPage = address.ToString() Return R End Function End Class
以下是上述代码的C#版本:
using System.Net; class CookieAwareWebClient : WebClient { private CookieContainer cc = new CookieContainer(); private string lastPage; protected override WebRequest GetWebRequest(System.Uri address) { WebRequest R = base.GetWebRequest(address); if (R is HttpWebRequest) { HttpWebRequest WR = (HttpWebRequest)R; WR.CookieContainer = cc; if (lastPage != null) { WR.Referer = lastPage; } } lastPage = address.ToString(); return R; } }