I want to scrap Lulu webstore. I have the following problems with it.
The website content is loaded dynamically.
The website when tried to access, redirects to choose country page.
After choosing country, it pops up select delivery location and then redirects to home page.
When you try to hit end page programmatically, you get an empty response because the content is loaded dynamically.
I have a list of end URLs from which I have to scrape data. For example, consider mobile accessories. Now I want to
Get the HTML source of that page directly, which is loaded dynamically bypassing choose country, select location popups, so that I can use my Scrapy Xpath selectors to extract data.
If you suggest me to use Selenium, PhantomJS, Ghost or something else to deal with dynamic content, please understand that I want the end HTML source as in a web browser after processing all dynamic content which will be sent to Scrapy.
Also, I tried using proxies to skip choose country popup but still it loads it and select delivery location.
I've tried using Splash, but it returns me the source of choose country page.
At last I found answer. I used EditThisCookie plugin to view the cookies that are loaded by the Web Page. I found that it stores 3 cookies CurrencyCode,ServerId,Site_Config in my local storage. I used the above mentioned plugin to copy the cookies in JSON format. I referred this manual for setting cookies in the requests.
Now I'm able to skip those location,delivery address popups. After that I found that the dynamic pages are loaded via <script type=text/javascript> and found that part of page url is stored in a variable. I extracted the value using split(). Here is the script part to get the dynamic page url.
from lxml import html
page_source=requests.get(url,cookies=jar)
tree=html.fromstring(page_source.content)
dynamic_pg_link=tree.xpath('//div[#class="col3_T02"]/div/script/text()')[0] #entire javascript to load product pages
dynamic_pg_link=dynamic_pg_link.split("=")[1].split(";")[0].strip()#obtains the dynamic page url.
page_link="http://www.luluwebstore.com/Handler/ProductShowcaseHandler.ashx?ProductShowcaseInput="+dynamic_pg_link
Now I'm able to extract data from these LInks.
Thanks to #Cal Eliacheff for the previous guidance.
Related
I'm trying to web scrape the amazon deals page but the problem is that I'm unable to get the URL for the next page. Here is the link to the Amazon today's deals page. At the bottom of the page, there is pagination but when I inspected the page, there is no URL. The href tag only contains "#" in the URL which should only load the page to the top. How is Amazon able to move to the next page? is there any hidden URL? I couldn't find anything using the Network tab in the Inspect menu as well. I'm adding the picture below to show the code of pagination.
Probably some JavaScript wizardry they are running in the background. # seems like a placeholder. Check out the JavaScript code, and there might be more clues there.
A beginner here.
I want to extract all the jobs from Barclays (https://search.jobs.barclays/search-jobs)
I got through scraping the first page but am struggling to go to the next page, as the url don't change.
I tried to scrape the url on the next page button, but that href brings me back to the homepage.
Does that mean that all the job data is actually stored within the original html?
If so, how can I extract it?
Thanks!
So I analyzed the website, and it communicates with the server using an API, so you can get data directly from it as a JSON file.
This is the API link in this specific case(for my computer): https://search.jobs.barclays/search-jobs/results?ActiveFacetID=44699&CurrentPage=2&RecordsPerPage=15&Distance=50&RadiusUnitType=0&Keywords=&Location=&ShowRadius=False&IsPagination=False&CustomFacetName=&FacetTerm=&FacetType=0&SearchResultsModuleName=Search+Results&SearchFiltersModuleName=Search+Filters&SortCriteria=0&SortDirection=0&SearchType=5&PostalCode=&fc=&fl=&fcf=&afc=&afl=&afcf=
For you the url might be different, but the concept is the same:
As you ca see, there is a 'CurrentPage=2' inside the url which you can use to get any of the pages using requests, then extract what you need from the json.
The homepage of the website I'm trying to scrape displays four tabs, one of which reads "[Number] Available Jobs". I'm interested in scraping the [Number] value. When I inspect the page in Chrome, I can see the value enclosed within a <span> tag.
However, there is nothing enclosed in that <span> tag when I view the page source directly. I was planning on using the Python requests module to make an HTTP GET request and then use regex to capture the value from the returned content. This is obviously not possible if the content doesn't contain the number I need.
My questions are:
What is happening here? How can a value be dynamically loaded into a
page, displayed, and then not appear within the HTML source?
If the value doesn't appear in the page source, what can I do to
reach it?
If the content doesn't appear in the page source then it is probably generated using javascript. For example the site might have a REST API that lists jobs, and the Javascript code could request the jobs from the API and use it to create the node in the DOM and attach it to the available jobs. That's just one possibility.
One way to scrap this information is to figure out how that javascript works and make your python scraper do the same thing (for example, if there is a simple REST API it is using, you just need to make a request to that same URL). Often that is not so easy, so another alternative is to do your scraping using a javascript capable browser like selenium.
One final thing I want to mention is that regular expressions are a fragile way to parse HTML, you should generally prefer to use a library like BeautifulSoup.
1.A value can be loaded dynamically with ajax, ajax loads asynchronously that means that the rest of the site does not wait for ajax to be rendered, that's why when you get the DOM the elements loaded with ajax does not appear in it.
2.For scraping dynamic content you should use selenium, here a tutorial
for data that load dynamically you should look for an xhr request in the networks and if you can make that data productive for you than voila!!
you can you phantom js, it's a headless browser and it captures the html of that page with the dynamically loaded content.
Hi i have successfully scraped all the pages of few shopping websites by using Python and Regular Expression.
But now i am in trouble to scrape all the pages of a particular website where next page follow up link is not present in current page like this one here http://www.jabong.com/men/clothing/mens-jeans/
This website is loading the next pages data in same page dynamically by Ajax calls. So while scraping i am only able to scrape the data of First page only. But I need to scrape all the items present in all pages of that website.
I am not getting a way to get the source code of all the pages of these type of websites where next page's follow up link is not available in Current page. Please help me through this.
Looks like the site is using AJAX requests to get more search results as the user scrolls down. The initial set of search results can be found in the main request:
http://www.jabong.com/men/clothing/mens-jeans/
As the user scrolls down the page detects when they reach the end of the current set of results, and loads the next set, as needed:
http://www.jabong.com/men/clothing/mens-jeans/?page=2
One approach would be to simply keep requesting subsequent pages till you find a page with no results.
By the way, I was able to determine this by using the proxy tool in screen-scraper. You could also use a tool like Charles or HttpFox. They key is to browse the site and watch what HTTP requests get made so that you can mimic them in your code.
I'm trying to scrape some information from a web site, but am having trouble reading the relevant pages. The pages seem to first send a basic setup, then more detailed info. My download attempts only seem to capture the basic setup. I've tried urllib and mechanize so far.
Firefox and Chrome have no trouble displaying the pages, although I can't see the parts I want when I view page source.
A sample url is https://personal.vanguard.com/us/funds/snapshot?FundId=0542&FundIntExt=INT
I'd like, for example, average maturity and average duration from the lower right of the page. The problem isn't extracting that info from the page, it's downloading the page so that I can extract the info.
The page uses JavaScript to load the data. Firefox and Chrome are only working because you have JavaScript enabled - try disabling it and you'll get a mostly empty page.
Python isn't going to be able to do this by itself - your best compromise would be to control a real browser (Internet Explorer is easiest, if you're on Windows) from Python using something like Pamie.
The website loads the data via ajax. Firebug shows the ajax calls. For the given page, the data is loaded from https://personal.vanguard.com/us/JSP/Funds/VGITab/VGIFundOverviewTabContent.jsf?FundIntExt=INT&FundId=0542
See the corresponding javascript code on the original page:
<script>populator = new Populator({parentId:
"profileForm:vanguardFundTabBox:tab0",execOnLoad:true,
populatorUrl:"/us/JSP/Funds/VGITab/VGIFundOverviewTabContent.jsf?FundIntExt=INT&FundId=0542",
inline:fals e,type:"once"});
</script>
The reason why is because it's performing AJAX calls after it loads. You will need to account for searching out those URLs to scrape it's content as well.
As RichieHindle mentioned, your best bet on Windows is to use the WebBrowser class to create an instance of an IE rendering engine and then use that to browse the site.
The class gives you full access to the DOM tree, so you can do whatever you want with it.
http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser(loband).aspx