C#获得和发送网站Session

C#获得和发送网站Session

                request  =  (HttpWebRequest)WebRequest.Create(url);
                 if  (Const.session  !=   null )
                 {
                    request.Headers.Add("Cookie", Const.session);
                }
                request.Timeout  =   30000 ;  // 设定超时值
                request.ContentType  =   " application/octet-stream " ;
                request.Method  =   " POST " ;
                request.ContentLength  =  outData.Length;

                stream  =  request.GetRequestStream();
                stream.Write(outData,  0 , outData.Length);
                stream.Flush();
                stream.Close();
                Const.uiWaitMessage  =   " 请求发送完毕，开始接收数据 " ;
                Thread.Sleep( 500 );
                 // 发送完毕
                 // 接收数据
                response  =  (HttpWebResponse)request.GetResponse();
                 if  (Const.session  ==   null )
                 {// 注销后要清除Common.session
                    String cookie = response.GetResponseHeader("Set-Cookie");
                    if (cookie != null)
                    {
                        int n = cookie.IndexOf(';');
                        if (n > -1)  Const.session = cookie.Substring(0, n);
                    }
                }

使用

                 if  (Const.session  ==   null )
                 {// 注销后要清除Common.session
                    String cookie = response.GetResponseHeader("Set-Cookie");
                    if (cookie != null)
                    {
                        int n = cookie.IndexOf(';');
                        if (n > -1)  Const.session = cookie.Substring(0, n);
                    }
                }

可以获得并保存网站分配的Session信息

这样每次访问指定url的时候就可以先用

                 if  (Const.session  !=   null )
                 {
                    request.Headers.Add("Cookie", Const.session);
                }

来添加Cookie，将已获得Session信息发送到网站。

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