ASP.NET(C#)经典采集代码

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 System.Drawing;


using MSXML2;


using System.Text.RegularExpressions;


namespace wenweifeng






{




/**//**//**//// <summary>


/// CaiJi 的摘要说明


/// </summary>


public class CaiJi






{


public CaiJi()






{


//


// TODO: 在此处添加构造函数逻辑


//


}


~CaiJi()






{


Dispose();


}


public void Dispose()






{


GC.SuppressFinalize(this);


}






日期随机函数#region 日期随机函数




/**//**//**//**********************************


* 函数名称:DateRndName


* 功能说明:日期随机函数


* 参 数:ra:随机数


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* Random ra = new Random();


* string s = o.DateRndName(ra);


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 日期随机函数


/// </summary>


/// <param name="ra">随机数</param>


/// <returns></returns>


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(1000000, 9999999).ToString();


return s;


}


#endregion






得文件后缀#region 取得文件后缀




/**//**//**//**********************************


* 函数名称:GetFileExtends


* 功能说明:取得文件后缀


* 参 数:filename:文件名称


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string url = @"http://www.baidu.com/img/logo.gif";


* string s = o.GetFileExtends(url);


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 取得文件后缀


/// </summary>


/// <param name="filename">文件名称</param>


/// <returns></returns>


public string GetFileExtends(string filename)






{


string ext = null;


if (filename.IndexOf('.') > 0)






{


string[] fs = filename.Split('.');


ext = fs[fs.Length - 1];


}


return ext;


}


#endregion






获取远程文件源代码#region 获取远程文件源代码




/**//**//**//**********************************


* 函数名称:GetRemoteHtmlCode


* 功能说明:获取远程文件源代码


* 参 数:Url:远程url


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string url = @"http://www.baidu.com";


* string s = o.GetRemoteHtmlCode(url);


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 获取远程文件源代码


/// </summary>


/// <param name="url">远程url</param>


/// <returns></returns>


public string GetRemoteHtmlCode(string Url)






{


string s = "";


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);


}


return s;


}




#endregion






保存远程文件#region 保存远程文件




/**//**//**//**********************************


* 函数名称：RemoteSave


* 功能说明：保存远程文件


* 参 数：Url:远程url;Path:保存到的路径


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string s = "";


* string url = @"http://www.baidu.com/img/logo.gif";


* string path =Server.MapPath("Html/");


* s = o.RemoteSave(url,path);


* Response.Write(s);


* o.Dispose();


* ******************************/




/**//**//**//// <summary>


/// 保存远程文件


/// </summary>


/// <param name="Url">远程url</param>


/// <param name="Path">保存到的路径</param>


/// <returns></returns>


public string RemoteSave(string Url, string Path)






{




Random ra = new Random();


string newfilename = string.Empty;


string StringFileName = DateRndName(ra) + "." + GetFileExtends(Url);


if (GetFileExtends(Url).Trim().ToLower() != "jpg")


newfilename = StringFileName;


else


newfilename = DateRndName(ra) + "Addpic." + GetFileExtends(Url);


string StringFilePath = Path + StringFileName;


string newfilepath = Path + newfilename;


string retname = string.Empty;


try






{


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();


if (GetFileExtends(Url).Trim().ToLower() == "jpg")






{


function myfunction = new function();


//myfunction.AddShuiYinWord(StringFilePath, newfilepath);


service myserver=new service();


myfunction.AddShuiYinPic(StringFilePath, newfilepath, HttpContext.Current.Server.MapPath(myserver.myweblogo));


}




}


else


throw new Exception(_xmlhttp.statusText);


}


catch (Exception ex)






{




}


return newfilename;


}


#endregion






替换网页中的换行和引号#region 替换网页中的换行和引号




/**//**//**//**********************************


* 函数名称:ReplaceEnter


* 功能说明:替换网页中的换行和引号


* 参 数:HtmlCode:html源代码


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.ReplaceEnter(HtmlCode);


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 替换网页中的换行和引号


/// </summary>


/// <param name="HtmlCode">HTML源代码</param>


/// <returns></returns>


public string ReplaceEnter(string HtmlCode)






{


string s = "";


if (HtmlCode == null || HtmlCode == "")


s = "";


else


s = HtmlCode.Replace("/"", "");


s = s.Replace("/r", "");


s = s.Replace("/n", "");


return s;


}




#endregion






执行正则提取出值#region 执行正则提取出值




/**//**//**//**********************************


* 函数名称:GetRegValue


* 功能说明:执行正则提取出值


* 参 数:HtmlCode:html源代码


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.ReplaceEnter(HtmlCode);


* string Reg="<title>.+?</title>";


* string GetValue=o.GetRegValue(Reg,HtmlCode)


* Response.Write(GetValue);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 执行正则提取出值


/// </summary>


/// <param name="RegexString">正则表达式</param>


/// <param name="RemoteStr">HtmlCode源代码</param>


/// <returns></returns>


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






替换HTML源代码#region 替换HTML源代码




/**//**//**//**********************************


* 函数名称:RemoveHTML


* 功能说明:替换HTML源代码


* 参 数:HtmlCode:html源代码


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.ReplaceEnter(HtmlCode);


* string Reg="<title>.+?</title>";


* string GetValue=o.GetRegValue(Reg,HtmlCode)


* Response.Write(GetValue);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 替换HTML源代码


/// </summary>


/// <param name="HtmlCode">html源代码</param>


/// <returns></returns>


public string RemoveHTML(string HtmlCode)






{


string MatchVale = HtmlCode;


foreach (Match s in Regex.Matches(HtmlCode, "<.+?>"))






{


MatchVale = MatchVale.Replace(s.Value, "");


}


return MatchVale;


}




#endregion






匹配页面的链接#region 匹配页面的链接




/**//**//**//**********************************


* 函数名称:GetHref


* 功能说明:匹配页面的链接


* 参 数:HtmlCode:html源代码


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.GetHref(HtmlCode);


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 获取页面的链接正则


/// </summary>


/// <param name="HtmlCode"></param>


/// <returns></returns>


public string GetHref(string HtmlCode)






{


string MatchVale = "";


string Reg = @"(h|H)(r|R)(e|E)(f|F) *= *('|"")?((/w|//|//|/.|:|-|_)+)[/S]*";


foreach(Match m in Regex.Matches(HtmlCode,Reg))






{


MatchVale += (m.Value).ToLower().Replace("href=", "").Trim() + "|";


}


return MatchVale;


}


#endregion






匹配页面的图片地址#region 匹配页面的图片地址




/**//**//**//**********************************


* 函数名称:GetImgSrc


* 功能说明:匹配页面的图片地址


* 参 数:HtmlCode:html源代码;imgHttp:要补充的http.当比如:<img src="bb/x.gif">则要补充http://www.baidu.com/,当包含http信息时,则可以为空


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.GetImgSrc(HtmlCode,"http://www.baidu.com/");


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 匹配页面的图片地址


/// </summary>


/// <param name="HtmlCode"></param>


/// <param name="imgHttp">要补充的http://路径信息</param>


/// <returns></returns>


public string GetImgSrc(string HtmlCode, string imgHttp)






{


string MatchVale = "";


string Reg = @"<img.+?>";


foreach (Match m in Regex.Matches(HtmlCode.ToLower(), Reg))






{


MatchVale += GetImg((m.Value).ToLower().Trim(), imgHttp) + "|";


}




return MatchVale;


}




/**//**//**//// <summary>


/// 匹配<img src="" />中的图片路径实际链接


/// </summary>


/// <param name="ImgString"><img src="" />字符串</param>


/// <returns></returns>


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=","");


}


if (MatchVale.IndexOf(".net") != -1 || MatchVale.IndexOf(".com") != -1 || MatchVale.IndexOf(".org") != -1 || MatchVale.IndexOf(".cn") != -1 || MatchVale.IndexOf(".cc") != -1 || MatchVale.IndexOf(".info") != -1 || MatchVale.IndexOf(".biz") != -1 || MatchVale.IndexOf(".tv") != -1)


return (MatchVale);


else


return (imgHttp+MatchVale);


}




#endregion






替换通过正则获取字符串所带的正则首尾匹配字符串#region 替换通过正则获取字符串所带的正则首尾匹配字符串




/**//**//**//**********************************


* 函数名称:GetHref


* 功能说明:匹配页面的链接


* 参 数:HtmlCode:html源代码


* 调用示例:


* GetRemoteObj o = new GetRemoteObj();


* string Url = @"http://www.baidu.com";


* string HtmlCode = o.GetRemoteHtmlCode(Url);


* string s = o.RegReplace(HtmlCode,"<title>","</title>");


* Response.Write(s);


* o.Dispose();


* ********************************/




/**//**//**//// <summary>


/// 替换通过正则获取字符串所带的正则首尾匹配字符串


/// </summary>


/// <param name="RegValue">要替换的值</param>


/// <param name="regStart">正则匹配的首字符串</param>


/// <param name="regEnd">正则匹配的尾字符串</param>


/// <returns></returns>


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;


}


#endregion












}




}

摘自：/content/4136673.html