POST求助 抓包都正常 cookie每次都一样 不变

您好，//准备cookie04. 05.CookieContainer cookie = new CookieContainer();06. 07.string[] strcookie = "BAIDUID=9ABC673457A0DB3B19F801E3CE7B8976:FG=1; _EXPS=0; cflag=65535%3A1; NEW_NAV_TIME=2; H_PS_PSSID=3146_1424_3138_2785_2980_3092_2701; IM_old=0|hknp852y; _BDSC=1; BDUSS=80VkFoalNYTnVsbXQ0ZG5jNXJXNTF4SU8wZXg5M2pXd2hqQ3ZuTWtlSk9WRDFTQVFBQUFBJCQAAAAAAAAAAAEAAACIMZY2ampqamp4anh4AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE7HFVJOxxVSNk".Split();08. 09.foreach (string co in strcookie)10. 11.{12. 13.cookie.SetCookies(new Uri("http://cang.baidu.com/do/cm"), co);14. 15.}16. 17. 18. 19.//开始post20. 21.HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);22. 23.request.Method = "POST";24. 25.request.Host = "www.baidu.com";26. 27.request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";28. 29.request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";30. 31.request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);32. 33.request.CookieContainer = cookie;34. 35.request.Referer = "http://www.baidu.com";36. 37.Stream myRequestStream = request.GetRequestStream();38. 39.StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));40. 41.myStreamWriter.Write(postDataStr);42. 43.myStreamWriter.Close();44. 45. 46. 47.HttpWebResponse response = (HttpWebResponse)request.GetResponse();48. 49. 50. 51.response.Cookies = cookie.GetCookies(response.ResponseUri);52. 53.Stream myResponseStream = response.GetResponseStream();54. 55.StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));56. 57.string retString = myStreamReader.ReadToEnd();58. 59.myStreamReader.Close();60. 61.myResponseStream.Close();