Asp.net captures the sina email contact implementation code

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Using System; Using System. Net; Using System. IO; Using System. Text; Using System. Collections. Specialized; Using System. Text. RegularExpressions; /* * AddressSina * Sina free email contact (sina.com/sina.cn)  * * Change? Performance? S * Ver 1.00.00 @ [20100721] Xingyuan Mengyu Xin? * Ver 2.00.00 @ [20110807] Xingyuan Mengyu upgrade */ Namespace GetEmailAddress { Internal class AddressSina: AddressBase  { Private string refererurl; // store the request address // Send an email request to log on Public override GetAddressStatus Login ()   { Try    { // 20110807 new rule // Get the Sina free email type ending with com or cn. String url = ""; String postdata = ""; String mailType = this. Credential. UserName. Substring (this. Credential. UserName. IndexOf ("@")); Switch (mailType)                 { Case "@ sina.com ": // 20110807 amendment Url = "http://mail.sina.com.cn/cgi-bin/login.cgi "; // Request to log on to obtain postdata data Postdata = "logintype = uid & u =" + this. credential. userName. substring (0, this. credential. userName. indexOf ("@") + "& psw =" + this. credential. password + "& product = mail & % B5 % C7 % C2 % BC = % B5 % C7 + % C2 % BC "; Break; Case "@ sina.cn ": // 20110807 new rule Url = "http://mail.sina.com.cn/cgi-bin/cnlogin.php "; // Request to log on to obtain postdata data Postdata = "domain = sina.cn & logintype = uid & u =" + this. credential. userName. substring (0, this. credential. userName. indexOf ("@") + "& psw =" + this. credential. password + "& x = 40 & y = 19 "; Break; Default: break;                 } // Postdata data length Byte [] buf = System. Text. Encoding. UTF8.GetBytes (postdata ); HttpWebResponse loginresponse = SendRequest ("POST", url, "http://m0.mail.sina.com.cn/classic/index.php", buf ); Refererurl = loginresponse. ResponseUri. ToString (); // ResponseUri address changed. Login successful If (refererurl = url) Return GetAddressStatus. UidOrPwdError;    } Catch    { Return GetAddressStatus. NetError;    } Return GetAddressStatus. Success;   } /// <Summary> /// Return the array of mailboxes. /// </Summary> /// <Param name = "page"> obtain the Mail information in array format. </Param> /// <Param name = "encoding"> the encoding format prevents garbled characters. </Param> /// <Returns> returns the array of mailbox data. </Returns> Public override bool GetAddressPage (out string page, Encoding encoding)   { Page = null; // Address book url String host = refererurl. Substring (7 ); Host = host. Substring (0, host. IndexOf ("/")); String addressurl = "http: //" + host + "/classic/addr_member.php "; // Act = list & gid = 0 & sort_item = letter & sort_type = desc // Gid = 0 is not added here because the whole page data is captured by adding 0. Remove and only capture data in the contacts array String postdata = "act = list & sort_item = letter & sort_type = desc "; // Request parameters // Act = list & sort_item = letter & sort_type = desc Byte [] buf = System. Text. Encoding. UTF8.GetBytes (postdata ); Try    { HttpWebResponse sinaAddressResponse = SendRequest ("POST", addressurl, refererurl, buf ); Page = GetPageByResponse (sinaAddressResponse, encoding ); // Cancel String logouturl = "http: //" + host + "/classic/logout. php? From = mail "; HttpWebResponse sinalogoutResponse = SendRequest ("GET", logouturl );    } Catch    { Return false;    } Return true;   }  } }