asp.net采集函数（采集、分析、替换、入库一体）
- 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;
- namespace EC
- {
- ///
- /// 远程文件抓取类
- ///
- public class GetRemoteObj
- {
- #region 构造与析构函数
- public GetRemoteObj()
- {
- //
- // TODO: 在此处添加构造函数逻辑
- //
- }
- ~GetRemoteObj()
- {
- Dispose();
- }
- #endregion
- #region IDisposable 成员
- public void Dispose()
- {
- GC.SuppressFinalize(this);
- }
- #endregion
- #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();
- * ********************************/
- ///
- /// 日期随机函数
- ///
- /// 随机数
- ///
- 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
- /**********************************
- * 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();
- * ********************************/
- ///
- /// 取得文件后缀
- ///
- /// 文件名称
- ///
- 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
- /**********************************
- * 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();
- * ********************************/
- ///
- /// 获取远程文件源代码
- ///
- /// 远程url
- ///
- 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
- #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();
- * ******************************/
- ///
- /// 保存远程文件
- ///
- /// 远程url
- /// 保存到的路径
- ///
- 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
- /**********************************
- * 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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.ReplaceEnter(HtmlCode);
- * Response.Write(s);
- * o.Dispose();
- * ********************************/
- ///
- /// 替换网页中的换行和引号
- ///
- /// HTML源代码
- ///
- 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
- /**********************************
- * 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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.ReplaceEnter(HtmlCode);
- * string Reg="";
- * string GetValue=o.GetRegValue(Reg,HtmlCode)
- * Response.Write(GetValue);
- * o.Dispose();
- * ********************************/
- ///
- /// 执行正则提取出值
- ///
- /// 正则表达式
- /// HtmlCode源代码
- ///
- 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
- /**********************************
- * 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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.ReplaceEnter(HtmlCode);
- * string Reg="";
- * string GetValue=o.GetRegValue(Reg,HtmlCode)
- * Response.Write(GetValue);
- * o.Dispose();
- * ********************************/
- ///
- /// 替换HTML源代码
- ///
- /// 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
- /**********************************
- * 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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.GetHref(HtmlCode);
- * Response.Write(s);
- * o.Dispose();
- * ********************************/
- ///
- /// 获取页面的链接正则
- ///
- ///
- ///
- 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
- /**********************************
- * 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: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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.GetImgSrc(HtmlCode,"http://www.baidu.com/");
- * Response.Write(s);
- * o.Dispose();
- * ********************************/
- ///
- /// 匹配页面的图片地址
- ///
- ///
- /// 要补充的http://路径信息
- ///
- public string GetImgSrc(string HtmlCode, string imgHttp)
- {
- string MatchVale = "";
- string Reg = @"";
- foreach (Match m in Regex.Matches(HtmlCode, Reg))
- {
- MatchVale += GetImg((m.Value).ToLower().Trim(), imgHttp) + "||";
- }
- return MatchVale;
- }
- ///
- /// 匹配中的图片路径实际链接
- ///
- /// 字符串
- ///
- 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
- /**********************************
- * 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";
- * strion HtmlCode = o.GetRemoteHtmlCode(Url);
- * string s = o.RegReplace(HtmlCode,"");
- * Response.Write(s);
- * o.Dispose();
- * ********************************/
- ///
- /// 替换通过正则获取字符串所带的正则首尾匹配字符串
- ///
- /// 要替换的值
- /// 正则匹配的首字符串
- /// 正则匹配的尾字符串
- ///
- 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;
- }
- #endregion
- }
- }
记得添加引用 Interop.MSXML2.dll 否则msxml2命名空间用不了