public IActionResult About(string url)
{
var list = typeof(ScrapingXpath).GetProperties().Select(s => s.GetCustomAttributes(typeof(DisplayAttribute))).ToList().Select(c => ((DisplayAttribute)c.First()).Name).ToList();
var web = new HtmlWeb();
var doc = web.Load(url)
;
//foreach (var items in doc.DocumentNode.SelectNodes("//script"))
//{
// items.Remove();
//}
//foreach (var htmlNode in doc.DocumentNode.ChildNodes.Where(x => x.XPath.Contains("#comment")).ToList())
//{
// htmlNode.Remove();
//}
//foreach (var htmlNode in doc.DocumentNode.ChildNodes.Where(x => x.XPath.Contains("/#document")).ToList())
//{
// htmlNode.Remove();
//}
//foreach (var selectNode in doc.DocumentNode.SelectNodes("//head/meta"))
//{
// selectNode.Remove();
//}
var keyValues = new List <KeyValuePair <string, string> >();
var model = new CrawlerViewModel {
KeyValuePairs = keyValues, HtmlDoc = doc.DocumentNode.InnerHtml, MapTags = list, Url = url
};
return(this.View(model));
}
public IActionResult About()
{
var list = typeof(ScrapingXpath).GetProperties().Select(s => s.GetCustomAttributes(typeof(DisplayAttribute))).ToList().Select(c => ((DisplayAttribute)c.First()).Name).ToList();
var model = new CrawlerViewModel {
MapTags = list
};
return(this.View(new CrawlerViewModel()));
}
public ActionResult Default(CrawlerViewModel viewModel)
{
try
{
crawler.Crawl(viewModel);
}
catch (Exception ex)
{
viewModel.ErrorMsg = ex.Message;
}
return(View(viewModel));
}
public CrawlerViewModel Crawl(CrawlerViewModel viewModel)
{
if (!Helper.IsValidUrl(viewModel.UrlToCrawl))
{
viewModel.ErrorMsg = String.Format(" Please enter mail adress");
return(viewModel);
}
allLinksOnPage = new List <Uri>();
CrawlConfiguration config = new CrawlerNetConfig().Initalize();
this.crawler = new PoliteWebCrawler(config);
crawler.PageCrawlCompleted += crawler_PageCrawlCompleted;
//
CrawlResult result = crawler.Crawl(new Uri(viewModel.UrlToCrawl));
if (result.ErrorOccurred)
{
viewModel.ErrorMsg = String.Format("Crawler completed with error: {0}", result.ErrorException.Message);
}
var isProd = Convert.ToBoolean(ConfigurationManager.AppSettings["IsProd"].ToString());
if (isProd)
{
viewModel.CrawledLinks.AddRange(allLinksOnPage);
}
else
{
viewModel.CrawledLinks.AddRange(allLinksOnPage.Take(10));
}
viewModel.SuccessMsg = " Successfully Listed !";
return(viewModel);
}
public MainWindow()
{
cvm = new CrawlerViewModel();
this.DataContext = cvm;
InitializeComponent();
}
public CrawlerViewModel Crawler(
Repository repository,
string siteName,
MediaFolder folder,
string[] source,
string catcherPathFormat)
{
var result = new CrawlerViewModel
{
state = "SUCCESS"
};
if (source == null || source.Length == 0)
{
result.state = "参数错误：没有指定抓取源";
return(result);
}
result.list = source.Select(item =>
{
var crawler = new CrawlerItemViewModel();
if (!IsExternalIPAddress(item))
{
crawler.state = "INVALID_URL";
return(crawler);
}
crawler.source = item;
var request = HttpWebRequest.Create(item) as HttpWebRequest;
using (var response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
{
crawler.state = "Url returns " + response.StatusCode + ", " + response.StatusDescription;
return(crawler);
}
if (response.ContentType.IndexOf("image") == -1)
{
crawler.state = "Url is not an image";
return(crawler);
}
try
{
var name = Path.GetFileName(item);
if (!Path.HasExtension(item))
{
name += ".jpg";
}
var fileName = PathFormatter.Format(name, catcherPathFormat);
var stream = response.GetResponseStream();
var reader = new BinaryReader(stream);
using (var ms = new MemoryStream())
{
byte[] buffer = new byte[4096];
int count;
while ((count = reader.Read(buffer, 0, buffer.Length)) != 0)
{
ms.Write(buffer, 0, count);
}
ms.Flush();
var res = Upload(repository, siteName, folder, fileName, ms);
crawler.url = res.url;
}
crawler.state = "SUCCESS";
}
catch (Exception e)
{
crawler.state = "抓取错误：" + e.Message;
}
return(crawler);
}
return(crawler);
});
return(result);
}
