I want to crawl this site: https://511.org/alerts/traffic/incidents using Apache Nutch. The webpage has dynamically loaded ajax content. If I crawl it with the default configurations, Nutch just brings headers and footers and dynamically loaded content is lost. I am using Nutch 1.14.
With Nutch 1.14, you can use either the Nutch Selenium or the Nutch Interactive Selenium plugins to crawl pages with dynamically loaded elements.
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I want to download this website
Abd i tried idm and httrack but didn't work for javascript content
http://websdr.uk:8074/
Anyone can help me to download this frequency streaming content,
Thank you
In order to capture the javascript actions, you'll need Selenium. It's a browser automation tool, used for Automated testing and data parsing from webpages.
https://www.selenium.dev/
Downloading an entire site is possible only if the website has static pages (HTML, CSS, Img). But Javascript-based content is loaded dynamically, which would be difficult to download.
I'm trying to understand how web crawling works. There are 3 questions:
Do we have to have an initial directory of URLs to build a larger
directory of URLs? How does this work?
Are there any open source
web crawlers written in python?
Where is the best place to learn more about web
crawlers?
Answering your second question first; Scrapy is a great tool to do web scraping in python.
When using it there are a number of ways to start the spiders. The CrawlSpider can be given a list of initial URLs to start from. It then scrapes these pages looking for new links which are added to the queue of pages to search.
Another way to use it is with the sitemap spider. For this spider you give the crawler a list of the URLs of websites sitemaps. The spider then looks up the list of pages from the sitemap and crawls those.
I will break down the question :
Is it possible for Nutch to crawl folders/subfolders/files?
If yes, is it possible for Nutch to crawl a remote Windows folders?
If yes, how can we configure this?
Or Nutch is only for Web Crawling?
Thank you.
Nutch can crawl files, if these files can be accessed via a browser.
I am using Apache Nutch for crawling websites. Nutch is not crawling links for external websites.
I have gone through this link How do you crawl external links on a found page? but it did not produce intended result.
My PHP Apache website starts to load a part of the content, then it seems to stop loading and then it appends the rest of the page.
I would like to know if there is any tool to find out what exactly is being load at the moment by my browser.
I prefer Firefox, but any browser works.
Following the advice of #Ehtesham, I am using Firebug for this purpose.
I didn't know that it had this functionality.
To download firebug for Firefox: Download Page