黄聪：C#带cookie模拟登录百度

        #region 同步通过POST方式发送数据

        /// <summary>

        /// 通过POST方式发送数据

        /// </summary>

        /// <param name="Url">url</param>

        /// <param name="postDataStr">Post数据</param>

        /// <param name="cookie">Cookie容器</param>

        /// <returns></returns>

        public string SendDataByPost(string Url, string postDataStr, ref CookieContainer cookie)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

            if (cookie.Count == )

            {

                request.CookieContainer = new CookieContainer();

                cookie = request.CookieContainer;

            }

            else

            {

                request.CookieContainer = cookie;

            }

            request.Method = "POST";

            request.ContentType = "application/x-www-form-urlencoded";

            request.ContentLength = postDataStr.Length;

            Stream myRequestStream = request.GetRequestStream();

            StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));

            myStreamWriter.Write(postDataStr);

            myStreamWriter.Close();

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Stream myResponseStream = response.GetResponseStream();

            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));

            string retString = myStreamReader.ReadToEnd();

            myStreamReader.Close();

            myResponseStream.Close();

            return retString;

        }

        #endregion

        #region 同步通过GET方式发送数据

        /// <summary>

        /// 通过GET方式发送数据

        /// </summary>

        /// <param name="Url">url</param>

        /// <param name="postDataStr">GET数据</param>

        /// <param name="cookie">GET容器</param>

        /// <returns></returns>

        public string SendDataByGET(string Url, string postDataStr, ref CookieContainer cookie)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == "" ? "" : "?") + postDataStr);

            if (cookie.Count == )

            {

                request.CookieContainer = new CookieContainer();

                cookie = request.CookieContainer;

            }

            else

            {

                request.CookieContainer = cookie;

            }

            request.Method = "GET";

            request.ContentType = "text/html;charset=UTF-8";

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Stream myResponseStream = response.GetResponseStream();

            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));

            string retString = myStreamReader.ReadToEnd();

            myStreamReader.Close();

            myResponseStream.Close();

            return retString;

        }

        #endregion

        private void button1_Click(object sender, EventArgs e)

        {

            string cookie = "BDUSS=xmTWI5bnNvVWRXUxxxxxxxxxMH42ckg1ak9VQm9zcG01N2xnSG94aGRZQVFBQUFBJCQAAAAAAAAAAAEAAACEh61i0~3B-rWl1dDN-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOg58FfoOfBXa2; BAIDUID=210F65A76356B6D480719A1A084D7D69:FG=1; PSTM=1476282093; BIDUPSID=9DDCF3D1EC83456525A2B69179CFA1D6; MCITY=-176%3A; PSINO=6; H_PS_PSSID=1465_21450_21108_21454_21394_21377_21192_21339; PHPSESSID=9c8cjtnb4l0210c62audgq64d4; Hm_lvt_4010fd5075fcfe46a16ec4cb65e02f04=1476059186,1478592650; Hm_lpvt_4010fd5075fcfe46a16ec4cb65e02f04=1478592650";

            CookieContainer cc = new CookieContainer();

            string url = "http://i.baidu.com/";

            cc.SetCookies(new System.Uri(url), cookie);

            string content = SendDataByGET(url, "", ref cc);

            Console.WriteLine(content);

            Console.ReadLine();

        }