web-crawler

So i'm following the Storm-Crawler-ElasticSearch tutorial and playing around with it. When Kibana is used to search I've noticed that number of hits for index name 'status' is far greater than 'index'. Example: On the top left, you can see that there's 846 hits for 'status' index I assume that means it has crawled through 846 pages. Now with 'index' index , it is shown that there are only 31 hits . I understand that functionallyn index and status are different as status is just responsible for the link meta data. The problem is that it seem that StormCrawler is parsing through many pages and

Following link seems to tell that it can't: How does Facebook Sharer select Images and other metadata when sharing my URL? But I wanted to know if it is still the case at current date... (The documentation on facebook dev site doesn't give any precision about this point) In the tests I've run I've never seen it interpret the JS, but that might be contextual / domain-specific (who knows). To test your specific case, use the Facebook linter: https://developers.facebook.com/tools/debug (log into FB first) That's the only way to be sure 100% sure how FB will parse your page (what properties it

I have the following... I wouldn't say problem, but situation. I have some HTML with tags and everything. I want to search the HTML for every URL. I'm doing it now by checking where it says 'h' then 't' then 't' then 'p', but I don't think is a great solution Any good ideas? Added: I'm looking for some kind of pseudocode but, just in case, I'm using Java for this project in particular Try using a HTML parsing library then search for <a> tags in the HTML document. Document doc = Jsoup.parse(input, "UTF-8", "http://example.com/"); Elements links = doc.select("a[href]"); // a with href not all

I'm new at Scrapy and I was just trying to scrape http://www.diseasesdatabase.com/ When I type scrapy view http://www.diseasesdatabase.com/ , it displays a blank page but if I download the page and do it on the local file, it displays as usual. Why is this happening? Pretend being a real browser providing a User-Agent header: scrapy view http://www.diseasesdatabase.com/ -s USER_AGENT="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36" Worked for me. Note that -s option here helps to override the built-in USER_AGENT setting

Running my code for a site to crawl the titles of different tutorials spreading across several pages, I found it working flawless. I tried to write some code not depending on the last page number the url has but on the status code until it shows http.status<>200. The code I'm pasting below is working impeccably in this case. However, Trouble comes up when I try to use another url to see whether it breaks automatically but found that the code did fetch all the results but did not break. What is the workaround in this case so that the code will break when it is done and stop the macro? Here is