由于經常要寫一些采集的程式，下面的三個函數是采集中的很常用的函數。姑且叫采集系統萬能正規表達式吧。全部源碼見
http://www.softbk.com/news.asp?id=3564
歡迎一起交流
//擷取頁面的html源碼
public string GetHtmlSource(string Url, string charset)
{
if (charset == "" || charset == null) charset = "gb2312";
string text1 = "";
try
{
HttpWebRequest request1 = (HttpWebRequest)WebRequest.Create(Url);
HttpWebResponse response1 = (HttpWebResponse)request1.GetResponse();
Stream stream1 = response1.GetResponseStream();
StreamReader reader1 = new StreamReader(stream1, Encoding.GetEncoding(charset));
text1 = reader1.ReadToEnd();
stream1.Close();
response1.Close();
}
catch (Exception exception1)
{
}
return text1;
}
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 ArrayList SniffwebCodeReturnList(string code, string wordsBegin, string wordsEnd)
{
ArrayList urlList = new ArrayList();
//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())
{
urlList.Add(match1.Groups["title"].ToString());
}
return urlList;
}