经典采集代码之C#
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
取得文件后缀取得文件后缀#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(" ", "");
s = s.Replace(" ", "");
return s;
}
#endregion
执行正则提取出值执行正则提取出值#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
}
}