沒有時間詳細的寫文章了，就隨便記錄並且分享一下。該方法能擴展到秒殺器哦。只是針對不同的網站 需要不同的分析而已。
公司需求以後要能從自己的文章資源平台，選擇文章發布到wordpress站群，所以需要一個自動發布文章的小功能。工作之余發布到園子裡和大家分享下。
之前嘗試用httpwebrequest 對象方式去實現但發現有cookies接收不全的現象，所以改用socket 模擬http post請求去實現，代碼寫的很亂，只是初步的探索，也參考了很多園子裡前輩的代碼。小小AD下：
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主要幾個方法：
1 /// <summary>
2 /// 帶上cookies 獲取需要登錄驗證的頁面
3 /// </summary>
4 /// <param name="url">請求的URL</param>
5 /// <param name="cookies">cookies字符串</param>
6 /// <param name="encoding">頁面編碼</param>
7 /// <returns></returns>
8 public string GetPage(string url, string cookies, string encoding)
9 {
10 Uri URI = new Uri(url);
11 string strHTML = string.Empty;//用來保存獲得的HTML代碼
12 IPHostEntry gist = Dns.GetHostEntry(URI.Host);//獲得當前ＵＲＬ的ＩＰ地址
13 IPAddress ip = gist.AddressList[0];//提取IP地址
14 IPEndPoint ipEnd = new IPEndPoint(ip, 80);//封裝IP地址和端口
15 Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//實例化Stock
16 try
17 {
18 socket.Connect(ipEnd);
19 }//自動循環捕捉連接
20 catch
21 { }
22 string sendString = "GET " + URI.PathAndQuery + " HTTP/1.1\r\n";
23 sendString += "Connection:close\r\n";
24 sendString += "Content-Type: application/x-www-form-urlencoded\r\n";
25 sendString += "Host:" + URI.Host + "\r\n";
26 if (!string.IsNullOrEmpty(cookies))
27 sendString += "Cookie:" + cookies + "\r\n\r\n";
28 byte[] ms = UTF8Encoding.GetEncoding(encoding).GetBytes(sendString);//將頭部轉換成byte形式
29 socket.Send(ms);//發送
30 int recv = -1;//定義接受數據長度
31 byte[] data = new byte[1024];//用來保存接收數據
32 do
33 {
34 recv = socket.Receive(data);
35 strHTML += Encoding.GetEncoding(encoding).GetString(data, 0, recv);
36 } while (recv != 0);
37 return strHTML;
38 }
socket方式post 登錄 之前用httpwebrequest方式 但始終登錄不了，原因是cookies接受不全，就改用socket方式 自行處理cookies
1 /// <summary>
2 ///
3 /// </summary>
4 /// <param name="postURL">登錄地址</param>
5 /// <param name="postString">發送的字符串</param>
6 /// <param name="encoding">網頁編碼</param>
7 /// <returns></returns>
8 public string PostData(string postURL,string postString, string encoding)
9 {
10 string strHTML = "";//用來保存獲得的HTML代碼
11 Uri URI = new Uri(postURL);
12 string sendString;
13 sendString = "POST {0} HTTP/1.1\r\n";
14 sendString += "Host: {1}\r\n";
15 sendString += "User-Agent:Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0\r\n";
16 sendString += "Content-Type:application/x-www-form-urlencoded\r\n";
17 sendString += "Content-Length:{2}\r\n";
18 sendString += "Connection:close\r\n\r\n";
19 sendString += "{3}\r\n";
20 sendString = string.Format(sendString, URI.PathAndQuery, URI.Host, postString.Length, postString);
21 Byte[] ByteGet = Encoding.GetEncoding(encoding).GetBytes(sendString);
22 IPAddress hostadd = Dns.GetHostEntry(URI.Host).AddressList[0];
23 IPEndPoint EPhost = new IPEndPoint(hostadd, 80);
24 Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
25 s.Connect(EPhost);
26 if (!s.Connected)
27 {
28 strHTML = "鏈接主機失敗";
29 }
30 s.Send(ByteGet, ByteGet.Length, SocketFlags.None);
31 strHTML = Recv(s, Encoding.GetEncoding(encoding));
32 return strHTML;
33 }
處理cookies以及重定向問題
/// <summary>
/// 從返回的源代碼中提取cookies 以及301或302跳轉
/// </summary>
/// <param name="s"></param>
/// <param name="location"></param>
/// <returns></returns>
public string GetCookies(string html, out string location)
{
StringBuilder sbCookies = new StringBuilder();
location = string.Empty;
string[] arr = html.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
foreach (string str in arr)
{
if (str.StartsWith("Set-Cookie: "))
{
int intStart = str.IndexOf(";");
string strCookie = str.Substring(12, intStart - 11);
sbCookies.Append(strCookie);
}
if (str.StartsWith("Location:"))
{
location = str.Substring(10);
}
}
return sbCookies.ToString();
}
