static void Main(string[] args)
{
var urisToCrawl = GetSiteToCrawl(Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory, @"FAQ\CrawlUrls.txt"));
var crawlRuleContent = GetCrawlRuleFileContent(Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory, @"FAQ\CrawlRules.txt"));
var decisionMaker = new CrawlDecisionMakerWithCrawlRules(crawlRuleContent);
XmlConfigurator.Configure();
var config = AbotXConfigurationSectionHandler.LoadFromXml().Convert();
config.IsJavascriptRenderingEnabled = true;
config.JavascriptRenderingWaitTimeInMilliseconds = 3000;
config.MaxConcurrentSiteCrawls = 1;
config.MaxConcurrentThreads = 2;
var impls = new ImplementationOverride(config);
impls.CrawlDecisionMaker = decisionMaker;
var crawler = new CrawlerX(config, impls);
crawler.PageCrawlStarting += crawler_ProcessPageCrawlStarting;
crawler.PageCrawlCompleted += crawler_ProcessPageCrawlCompleted;
crawler.PageCrawlDisallowed += crawler_PageCrawlDisallowed;
crawler.PageLinksCrawlDisallowed += crawler_PageLinksCrawlDisallowed;
foreach (var uriToCrawl in urisToCrawl)
{
var result = crawler.Crawl(uriToCrawl);
}
Console.Read();
}
public void Run()
{
var resources = SqlHelper.UnloadResources();
if (!resources.Any())
{
return;
}
var siteToCrawls = new List <SiteToCrawl>();
foreach (var res in resources)
{
for (var i = 0; i < 10; i++)
{
siteToCrawls.Add(new SiteToCrawl
{
Uri = new Uri(string.Format(_urlPattern, res, 10 * i)),
SiteBag = new { Name = res, Number = i + 1 }
});
}
}
CrawlConfigurationX config = AbotXConfigurationSectionHandler.LoadFromXml().Convert();
XmlConfigurator.Configure();//So the logger
var siteToCrawlProvider = new SiteToCrawlProvider();
siteToCrawlProvider.AddSitesToCrawl(siteToCrawls);
//Create the crawl engine instance
var impls = new ParallelImplementationOverride(
config,
new ParallelImplementationContainer
{
SiteToCrawlProvider = siteToCrawlProvider
}
);
_crawlerEngine = new ParallelCrawlerEngine(config, impls);
//Register for site level events
_crawlerEngine.AllCrawlsCompleted += (sender, eventArgs) =>
{
Console.WriteLine("Completed crawling all sites");
_crawlerEngine.Stop(true);
Run();
};
_crawlerEngine.SiteCrawlCompleted += (sender, eventArgs) =>
{
Console.WriteLine("Completed crawling site {0}", eventArgs.CrawledSite.SiteToCrawl.Uri);
};
_crawlerEngine.CrawlerInstanceCreated += (sender, eventArgs) =>
{
eventArgs.Crawler.CrawlBag = eventArgs.SiteToCrawl.SiteBag;
//Register for crawler level events. These are Abot's events!!!
eventArgs.Crawler.PageCrawlCompleted += (abotSender, abotEventArgs) =>
{
var crawlX = abotSender as CrawlerX;
CrawledPage crawledPage = abotEventArgs.CrawledPage;
if (crawledPage.WebException != null || crawledPage.HttpWebResponse.StatusCode != HttpStatusCode.OK)
{
Console.WriteLine("Crawl of page failed {0}", crawledPage.Uri.AbsoluteUri);
}
else
{
if (string.IsNullOrEmpty(crawledPage.Content.Text))
{
Console.WriteLine("Page had no content {0}", crawledPage.Uri.AbsoluteUri);
}
else
{
try
{
if (crawledPage.CrawlDepth == 1)
{
Console.WriteLine("Depth: {0} --- Crawl of page succeeded {1}", crawledPage.CrawlDepth, crawledPage.Uri.AbsoluteUri);
var item = new CrawledItem()
{
Name = crawlX.CrawlBag.Name,
PageNumber = crawlX.CrawlBag.Number,
Url = crawledPage.Uri.AbsoluteUri,
Detail = crawledPage.Content.Text
};
SqlHelper.Store(new System.Collections.Generic.List <CrawledItem>()
{
item
});
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
}
//var htmlAgilityPackDocument = crawledPage.HtmlDocument; //Html Agility Pack parser
//var angleSharpHtmlDocument = crawledPage.AngleSharpHtmlDocument; //AngleSharp parser
};
eventArgs.Crawler.ShouldCrawlPage((pageToCrawl, crawlContext) =>
{
CrawlDecision decision = new CrawlDecision {
Allow = true
};
var isCrawlDepth1 = pageToCrawl.CrawlDepth == 0 && !pageToCrawl.Uri.AbsoluteUri.Contains("www.baidu.com/s?wd");
var isCrawlDepth2 = pageToCrawl.CrawlDepth == 1 && !pageToCrawl.Uri.AbsoluteUri.Contains("www.baidu.com/link");
if (isCrawlDepth1 || isCrawlDepth2)
{
return new CrawlDecision {
Allow = false, Reason = "Dont want to crawl google pages"
}
}
;
return(decision);
});
};
_crawlerEngine.StartAsync();
}
