1using System; 2using System.Data; 3using System.Configuration; 4using System.Web; 5using System.Web.Security; 6using System.Web.UI; 7using System.Web.UI.WebControls; 8using System.Web.UI.WebControls.WebParts; 9using System.Web.UI.HtmlControls; 10using MSXML2; //这个需要添加引用MSXML2 11using System.Text.RegularExpressions; 12namespace EC 13{ 14 /** <summary> 15 /// 远程文件抓取类 16 /// </summary> 17 public class GetRemoteObj 18 { 19 20 构造与析构函数#region 构造与析构函数 21 public GetRemoteObj() 22 { 23 // 24 // TODO: 在此处添加构造函数逻辑 25 // 26 } 27 ~GetRemoteObj() 28 { 29 Dispose(); 30 } 31 #endregion 32 33 IDisposable 成员#region IDisposable 成员 34 35 public void Dispose() 36 { 37 GC.SuppressFinalize(this); 38 } 39 40 #endregion 41 42 日期随机函数#region 日期随机函数 43 /**//********************************** 44 * 函数名称:DateRndName 45 * 功能说明:日期随机函数 46 * 参 数:ra:随机数 47 * 调用示例: 48 * GetRemoteObj o = new GetRemoteObj(); 49 * Random ra = new Random(); 50 * string s = o.DateRndName(ra); 51 * Response.Write(s); 52 * o.Dispose(); 53 * ********************************/ 54 /** <summary> 55 /// 日期随机函数 56 /// </summary> 57 /// <param name="ra">随机数</param> 58 /// <returns></returns> 59 public string DateRndName(Random ra) 60 { 61 DateTime d = DateTime.Now; 62 string s = null, y, m, dd, h, mm, ss; 63 y = d.Year.ToString(); 64 m = d.Month.ToString(); 65 if (m.Length < 2) m = "0" + m; 66 dd = d.Day.ToString(); 67 if (dd.Length < 2) dd = "0" + dd; 68 h = d.Hour.ToString(); 69 if (h.Length < 2) h = "0" + h; 70 mm = d.Minute.ToString(); 71 if (mm.Length < 2) mm = "0" + mm; 72 ss = d.Second.ToString(); 73 if (ss.Length < 2) ss = "0" + ss; 74 s += y + m + dd + h + mm + ss; 75 s += ra.Next(100, 999).ToString(); 76 return s; 77 } 78 #endregion 79 80 取得文件后缀#region 取得文件后缀 81 /**//********************************** 82 * 函数名称:GetFileExtends 83 * 功能说明:取得文件后缀 84 * 参 数:filename:文件名称 85 * 调用示例: 86 * GetRemoteObj o = new GetRemoteObj(); 87 * string url = @"http://www.baidu.com/img/logo.gif"; 88 * string s = o.GetFileExtends(url); 89 * Response.Write(s); 90 * o.Dispose(); 91 * ********************************/ 92 /** <summary> 93 /// 取得文件后缀 94 /// </summary> 95 /// <param name="filename">文件名称</param> 96 /// <returns></returns> 97 public string GetFileExtends(string filename) 98 { 99 string ext = null;100 if (filename.IndexOf('.') > 0)101 {102 string[] fs = filename.Split('.');103 ext = fs[fs.Length - 1];104 }105 return ext;106 }107 #endregion108109 获取远程文件源代码#region 获取远程文件源代码110 /**//**********************************111 * 函数名称:GetRemoteHtmlCode112 * 功能说明:获取远程文件源代码113 * 参 数:Url:远程url114 * 调用示例:115 * GetRemoteObj o = new GetRemoteObj();116 * string url = @"http://www.baidu.com/";117 * string s = o.GetRemoteHtmlCode(url);118 * Response.Write(s);119 * o.Dispose();120 * ********************************/121 /** <summary>122 /// 获取远程文件源代码123 /// </summary>124 /// <param name="url">远程url</param>125 /// <returns></returns>126 public string GetRemoteHtmlCode(string Url)127 {128 string s = "";129 MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass();130 _xmlhttp.open("GET", Url, false, null, null);131 _xmlhttp.send("");132 if (_xmlhttp.readyState == 4)133 {134 s = System.Text.Encoding.Default.GetString((byte[])_xmlhttp.responseBody);135 }136 return s;137 }138139 #endregion140141 保存远程文件#region 保存远程文件142 /**//**********************************143 * 函数名称：RemoteSave144 * 功能说明：保存远程文件145 * 参 数：Url:远程url;Path:保存到的路径146 * 调用示例:147 * GetRemoteObj o = new GetRemoteObj();148 * string s = "";149 * string url = @"http://www.baidu.com/img/logo.gif";150 * string path =Server.MapPath("Html/");151 * s = o.RemoteSave(url,path);152 * Response.Write(s);153 * o.Dispose(); 154 * ******************************/155 /** <summary>156 /// 保存远程文件157 /// </summary>158 /// <param name="Url">远程url</param>159 /// <param name="Path">保存到的路径</param>160 /// <returns></returns>161 public string RemoteSave(string Url, string Path)162 {163 Random ra = new Random();164 string StringFileName = DateRndName(ra) + "." + GetFileExtends(Url);165 string StringFilePath = Path + StringFileName;166 MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass();167 _xmlhttp.open("GET", Url, false, null, null);168 _xmlhttp.send("");169 if (_xmlhttp.readyState == 4)170 {171 if (System.IO.File.Exists(StringFilePath))172 System.IO.File.Delete(StringFilePath);173 System.IO.FileStream fs = new System.IO.FileStream(StringFilePath, System.IO.FileMode.CreateNew);174 System.IO.BinaryWriter w = new System.IO.BinaryWriter(fs);175 w.Write((byte[])_xmlhttp.responseBody);176 w.Close();177 fs.Close();178 }179 else180 throw new Exception(_xmlhttp.statusText);181 return StringFileName;182 }183 #endregion184185 替换网页中的换行和引号#region 替换网页中的换行和引号186 /**//**********************************187 * 函数名称:ReplaceEnter188 * 功能说明:替换网页中的换行和引号189 * 参 数:HtmlCode:html源代码190 * 调用示例:191 * GetRemoteObj o = new GetRemoteObj();192 * string Url = @"http://www.baidu.com/";193 * strion HtmlCode = o.GetRemoteHtmlCode(Url);194 * string s = o.ReplaceEnter(HtmlCode);195 * Response.Write(s);196 * o.Dispose();197 * ********************************/198 /** <summary>199 /// 替换网页中的换行和引号200 /// </summary>201 /// <param name="HtmlCode">HTML源代码</param>202 /// <returns></returns>203 public string ReplaceEnter(string HtmlCode)204 {205 string s = "";206 if (HtmlCode == null || HtmlCode == "")207 s = "";208 else209 s = HtmlCode.Replace("/"", "");210 s = s.Replace("/r/n", "");211 return s;212 }213214 #endregion 215216 执行正则提取出值#region 执行正则提取出值217 /**//**********************************218 * 函数名称:GetRegValue219 * 功能说明:执行正则提取出值220 * 参 数:HtmlCode:html源代码221 * 调用示例:222 * GetRemoteObj o = new GetRemoteObj();223 * string Url = @"http://www.baidu.com/";224 * strion HtmlCode = o.GetRemoteHtmlCode(Url);225 * string s = o.ReplaceEnter(HtmlCode);226 * string Reg="<title>.+?</title>";227 * string GetValue=o.GetRegValue(Reg,HtmlCode)228 * Response.Write(GetValue);229 * o.Dispose();230 * ********************************/231 /** <summary>232 /// 执行正则提取出值233 /// </summary>234 /// <param name="RegexString">正则表达式</param>235 /// <param name="RemoteStr">HtmlCode源代码</param>236 /// <returns></returns>237 public string GetRegValue(string RegexString, string RemoteStr)238 {239 string MatchVale = "";240 Regex r = new Regex(RegexString);241 Match m = r.Match(RemoteStr);242 if (m.Success)243 {244 MatchVale = m.Value;245 }246 return MatchVale;247 }248 #endregion 249250 替换HTML源代码#region 替换HTML源代码251 /**//**********************************252 * 函数名称:RemoveHTML253 * 功能说明:替换HTML源代码254 * 参 数:HtmlCode:html源代码255 * 调用示例:256 * GetRemoteObj o = new GetRemoteObj();257 * string Url = @"http://www.baidu.com/";258 * strion HtmlCode = o.GetRemoteHtmlCode(Url);259 * string s = o.ReplaceEnter(HtmlCode);260 * string Reg="<title>.+?</title>";261 * string GetValue=o.GetRegValue(Reg,HtmlCode)262 * Response.Write(GetValue);263 * o.Dispose();264 * ********************************/265 /** <summary>266 /// 替换HTML源代码267 /// </summary>268 /// <param name="HtmlCode">html源代码</param>269 /// <returns></returns>270 public string RemoveHTML(string HtmlCode)271 {272 string MatchVale = HtmlCode; 273 foreach (Match s in Regex.Matches(HtmlCode, "<.+?>"))274 {275 MatchVale = MatchVale.Replace(s.Value, "");276 }277 return MatchVale; 278 }279280 #endregion281282 匹配页面的链接#region 匹配页面的链接283 /**//**********************************284 * 函数名称:GetHref285 * 功能说明:匹配页面的链接286 * 参 数:HtmlCode:html源代码287 * 调用示例:288 * GetRemoteObj o = new GetRemoteObj();289 * string Url = @"http://www.baidu.com/";290 * strion HtmlCode = o.GetRemoteHtmlCode(Url);291 * string s = o.GetHref(HtmlCode);292 * Response.Write(s);293 * o.Dispose();294 * ********************************/295 /** <summary>296 /// 获取页面的链接正则297 /// </summary>298 /// <param name="HtmlCode"></param>299 /// <returns></returns>300 public string GetHref(string HtmlCode)301 {302 string MatchVale = "";303 string Reg = @"(h|H)(r|R)(e|E)(f|F) *= *('|"")?((/w|//|//|/.|:|-|_)+)('|""| *|>)?"; 304 foreach(Match m in Regex.Matches(HtmlCode,Reg))305 {306 MatchVale += (m.Value).ToLower().Replace("href=", "").Trim() + "||";307 }308 return MatchVale; 309 }310 #endregion311312 匹配页面的图片地址#region 匹配页面的图片地址313 /**//**********************************314 * 函数名称:GetImgSrc315 * 功能说明:匹配页面的图片地址316 * 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317 * 调用示例:318 * GetRemoteObj o = new GetRemoteObj();319 * string Url = @"http://www.baidu.com/";320 * strion HtmlCode = o.GetRemoteHtmlCode(Url);321 * string s = o.GetImgSrc(HtmlCode,"http://www.baidu.com/");322 * Response.Write(s);323 * o.Dispose();324 * ********************************/325 /** <summary>326 /// 匹配页面的图片地址327 /// </summary>328 /// <param name="HtmlCode"></param>329 /// <param name="imgHttp">要补充的http://路径信息</param>330 /// <returns></returns>331 public string GetImgSrc(string HtmlCode, string imgHttp)332 {333 string MatchVale = "";334 string Reg = @"<img.+?>";335 foreach (Match m in Regex.Matches(HtmlCode, Reg))336 {337 MatchVale += GetImg((m.Value).ToLower().Trim(), imgHttp) + "||";338 }339 return MatchVale;340 }341 /** <summary>342 /// 匹配<img src="" />中的图片路径实际链接343 /// </summary>344 /// <param name="ImgString"><img src="" />字符串</param>345 /// <returns></returns>346 public string GetImg(string ImgString, string imgHttp)347 {348 string MatchVale = "";349 string Reg = @"src=.+/.(bmp|jpg|gif|png|)";350 foreach (Match m in Regex.Matches(ImgString.ToLower(), Reg))351 {352 MatchVale += (m.Value).ToLower().Trim().Replace("src=","");353 }354 return (imgHttp+MatchVale);355 }356357 #endregion358359 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360 /**//**********************************361 * 函数名称:GetHref362 * 功能说明:匹配页面的链接363 * 参 数:HtmlCode:html源代码364 * 调用示例:365 * GetRemoteObj o = new GetRemoteObj();366 * string Url = @"http://www.baidu.com/";367 * strion HtmlCode = o.GetRemoteHtmlCode(Url);368 * string s = o.RegReplace(HtmlCode,"<title>","</title>");369 * Response.Write(s);370 * o.Dispose();371 * ********************************/372 /** <summary>373 /// 替换通过正则获取字符串所带的正则首尾匹配字符串374 /// </summary>375 /// <param name="RegValue">要替换的值</param>376 /// <param name="regStart">正则匹配的首字符串</param>377 /// <param name="regEnd">正则匹配的尾字符串</param>378 /// <returns></returns>379 public string RegReplace(string RegValue, string regStart,string regEnd)380 {381 string s = RegValue;382 if (RegValue != "" && RegValue != null)383 {384 if (regStart != "" && regStart != null)385 {386 s = s.Replace(regStart, "");387 }388 if (regEnd != "" && regEnd != null)389 {390 s = s.Replace(regEnd, "");391 }392 }393 return s;394 }395 #endregion396397398 }399}400
