Kar*_*hik 7 c# screen-scraping screen download web
请原谅我对这个问题的无知
我在用
string p="http://" + Textbox2.text;
string r= textBox3.Text;
System.Net.WebClient webclient=new
System.Net.Webclient();
webclient.DownloadFile(p,r);
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下载网页.你可以帮助我增强代码,以便下载整个网站.尝试使用HTML Screen Scraping但它只返回index.html文件的href链接.我该如何继续前进
谢谢
protected string GetWebString(string url)
{
string appURL = url;
HttpWebRequest wrWebRequest = WebRequest.Create(appURL) as HttpWebRequest;
HttpWebResponse hwrWebResponse = (HttpWebResponse)wrWebRequest.GetResponse();
StreamReader srResponseReader = new StreamReader(hwrWebResponse.GetResponseStream());
string strResponseData = srResponseReader.ReadToEnd();
srResponseReader.Close();
return strResponseData;
}
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这会将网页放入提供的URL中的字符串中.
然后,您可以使用REGEX来解析字符串.
这个小小的片段从craigslist中获取特定链接并将它们添加到arraylist ...修改为您的目的.
protected ArrayList GetListings(int pages)
{
ArrayList list = new ArrayList();
string page = GetWebString("http://albany.craigslist.org/bik/");
MatchCollection listingMatches = Regex.Matches(page, "(<p><a href=\")(?<LINK>/.+/.+[.]html)(\">)(?<TITLE>.*)(-</a>)");
foreach (Match m in listingMatches)
{
list.Add("http://albany.craigslist.org" + m.Groups["LINK"].Value.ToString());
}
return list;
}
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