using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using MSXML2;
using System.Text.RegularExpressions;
public class Search
{
public Search()
{
}
public void Dispose()
{
GC.SuppressFinalize(this);
}
#region 日期随机函数
public string DateRndName(Random ra)
{
DateTime d = DateTime.Now;
string s = null, y, m, dd, h, mm, ss;
y = d.Year.ToString();
m = d.Month.ToString();
if (m.Length < 2) m = “0” + m;
dd = d.Day.ToString();
if (dd.Length < 2) dd = “0” + dd;
h = d.Hour.ToString();
if (h.Length < 2) h = “0” + h;
mm = d.Minute.ToString();
if (mm.Length < 2) mm = “0” + mm;
ss = d.Second.ToString();
if (ss.Length < 2) ss = “0” + ss;
s += y + m + dd + h + mm + ss;
s += ra.Next(100, 999).ToString();
return s;
}
#endregion
#region 取得文件后缀
public string GetFileExtends(string filename)
{
string ext = null;
if (filename.IndexOf(\’.\’) > 0)
{
string[] fs = filename.Split(\’.\’);
ext = fs[fs.Length – 1];
}
return ext;
}
#endregion
#region 获取远程文件源代码
public string GetRemoteHtmlCode(string Url)
{
string s = “”;
try
{
MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass();
_xmlhttp.open(“GET”, Url, false, null, null);
_xmlhttp.send(“”);
if (_xmlhttp.readyState == 4)
{
s = System.Text.Encoding.Default.GetString((byte[])_xmlhttp.responseBody);
}
}
catch (Exception ex)
{
s = ex.Message+“指定的地址不存在或地址错误”;
}
return s;
}
#endregion
#region 保存远程文件
public string RemoteSave(string Url, string Path)
{
Random ra = new Random();
string StringFileName = DateRndName(ra) + “.” + GetFileExtends(Url);
string StringFilePath = Path + StringFileName;
MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass();
_xmlhttp.open(“GET”, Url, false, null, null);
_xmlhttp.send(“”);
if (_xmlhttp.readyState == 4)
{
if (System.IO.File.Exists(StringFilePath))
System.IO.File.Delete(StringFilePath);
System.IO.FileStream fs = new System.IO.FileStream(StringFilePath, System.IO.FileMode.CreateNew);
System.IO.BinaryWriter w = new System.IO.BinaryWriter(fs);
w.Write((byte[])_xmlhttp.responseBody);
w.Close();
fs.Close();
}
else
throw new Exception(_xmlhttp.statusText);
return StringFileName;
}
#endregion
#region 替换网页中的换行和引号
public string ReplaceEnter(string HtmlCode)
{
string s = “”;
if (HtmlCode == null || HtmlCode == “”)
s = “”;
else
s = HtmlCode.Replace(“\””, “”);
s = s.Replace(“\r\n”, “”);
return s;
}
#endregion
#region 执行正则提取出值
public string GetRegValue(string RegexString, string RemoteStr)
{
string MatchVale = “”;
Regex r = new Regex(RegexString);
Match m = r.Match(RemoteStr);
if (m.Success)
{
MatchVale = m.Value;
}
return MatchVale;
}
#endregion
#region 替换HTML源代码
public string RemoveHTML(string HtmlCode)
{
string MatchVale = HtmlCode;
foreach (Match s in Regex.Matches(HtmlCode, “<.+?>”))
{
MatchVale = MatchVale.Replace(s.Value, “”);
}
return MatchVale;
}
#endregion
#region 匹配页面的链接
public string GetHref(string HtmlCode)
{
string MatchVale = “”;
string Reg = @“(h|H)(r|R)(e|E)(f|F) *= *(\’|”“)?((\w|\\|\/|\.|:|-|_)+)(\’|”“| *|>)?”;
foreach (Match m in Regex.Matches(HtmlCode, Reg))
{
MatchVale += (m.Value).ToLower().Replace(“href=”, “”).Trim() + “||”;
}
return MatchVale;
}
#endregion
#region 匹配页面的图片地址
public string GetImgSrc(string HtmlCode, string imgHttp)
{
string MatchVale = “”;
string Reg = @“<img.+?>”;
foreach (Match m in Regex.Matches(HtmlCode, Reg))
{
MatchVale += GetImg((m.Value).ToLower().Trim(), imgHttp) + “||”;
}
return MatchVale;
}
public string GetImg(string ImgString, string imgHttp)
{
string MatchVale = “”;
string Reg = @“src=.+\.(bmp|jpg|gif|png|)”;
foreach (Match m in Regex.Matches(ImgString.ToLower(), Reg))
{
MatchVale += (m.Value).ToLower().Trim().Replace(“src=”, “”);
}
return (imgHttp + MatchVale);
}
#endregion
#region 替换通过正则获取字符串所带的正则首尾匹配字符串
public string RegReplace(string RegValue, string regStart, string regEnd)
{
string s = RegValue;
if (RegValue != “” && RegValue != null)
{
if (regStart != “” && regStart != null)
{
s = s.Replace(regStart, “”);
}
if (regEnd != “” && regEnd != null)
{
s = s.Replace(regEnd, “”);
}
}
return s;
}
public string SniffwebCode(string code, string wordsBegin, string wordsEnd)
{
string NewsTitle = “”;
Regex regex1 = new Regex(“” + wordsBegin + @“(?<title>[\s\S]+?)” + wordsEnd + “”, RegexOptions.Compiled | RegexOptions.IgnoreCase);
for (Match match1 = regex1.Match(code); match1.Success; match1 = match1.NextMatch())
{
NewsTitle = match1.Groups[“title”].ToString();
}
return NewsTitle;
}
public DataTable GetCodeHref(string HtmlCode)
{
string regex = @“\<a.*href\s*=\s*(?:”“(?<url>[^”“]*)”“|\'(?<url>[^\’]*)\’|(?<url>[^\>^\s]+)).*\>(?<title>[^\<^\>]*)\<[^\</a\>]*/a\>”;
Regex reg1 = new Regex(regex, RegexOptions.IgnoreCase);
MatchCollection ms1 = reg1.Matches(HtmlCode);
DataTable table = new DataTable();
table.Columns.Add(“title”);
table.Columns.Add(“url”);
foreach (Match m1 in ms1)
{
DataRow row = table.NewRow();
row[“title”] = m1.Groups[“title”].Value.ToString();
row[“url”] = m1.Groups[“url”].Value.ToString();
table.Rows.Add(row);
}
return table;
}
#endregion
}
