/// <summary>
/// Get verify code (appears if getting page too fast)
/// </summary>
/// <param name="PageDocument">Page as document</param>
/// <returns>Struct which stores all four necessary parameters for verify code, plus local verify image code address</returns>
public static VerifyCode GetVerifyCode(HtmlDocument PageDocument)
{
string localVerifyCode = System.IO.Path.GetTempFileName() + ".jpg";
HtmlNode codeNode = PageDocument.DocumentNode.SelectSingleNode("//img[@id=\"J_CheckCode\"]");
Utility.DownloadFile(codeNode.GetAttributeValue("src", ""), localVerifyCode);
VerifyCode verifyCode = new VerifyCode();
verifyCode.code = "";
verifyCode.sessionID = PageDocument.DocumentNode.SelectSingleNode("//input[@name=\"sessionID\"]").GetAttributeValue("value", "");
verifyCode.apply = PageDocument.DocumentNode.SelectSingleNode("//input[@name=\"apply\"]").GetAttributeValue("value", "");
verifyCode.referer = PageDocument.DocumentNode.SelectSingleNode("//input[@name=\"referer\"]").GetAttributeValue("value", "");
verifyCode.localVerifyCode = localVerifyCode;
return (verifyCode);
}
/// <summary>
/// Post verify code
/// </summary>
/// <param name="VerifyData">The struct which contains all four necessary parameters</param>
/// <returns>The page after posting as Document</returns>
public static HtmlDocument PostVerifyCode(VerifyCode VerifyData)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.xiami.com/alisec/captcha/tmdgetv3.php");
StringBuilder postData = new StringBuilder();
postData.Append("apply=" + HttpUtility.UrlEncode(VerifyData.apply) + "&");
postData.Append("code=" + HttpUtility.UrlEncode(VerifyData.code) + "&");
postData.Append("referer=" + HttpUtility.UrlEncode(VerifyData.referer) + "&");
postData.Append("sessionID=" + HttpUtility.UrlEncode(VerifyData.sessionID));
ASCIIEncoding ascii = new ASCIIEncoding();
byte[] postBytes = ascii.GetBytes(postData.ToString());
request.Method = "POST";
request.Accept = "ext/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = postBytes.Length;
request.Headers.Set("Accept-Encoding", "deflate");
request.Headers.Set("Accept-Language", "zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3");
request.Host = "www.xiami.com";
request.Referer = VerifyData.referer;
request.UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0";
request.CookieContainer = Utility.cookies;
Stream postStream = request.GetRequestStream();
postStream.Write(postBytes, 0, postBytes.Length);
Stream responseStream;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
responseStream = response.GetResponseStream();
StreamReader responseReader = new StreamReader(responseStream, Encoding.UTF8, true);
Utility.cookies.Add(response.Cookies);
string responseText = responseReader.ReadToEnd();
HtmlDocument htmlPageContent = new HtmlAgilityPack.HtmlDocument();
htmlPageContent.LoadHtml(responseText);
return (htmlPageContent);
}