I am using scrapy tool to scrape content from website, i need help from you guys how to scrape the reponse which is dynamically loaded from ajax.
when content loading from ajax at that mean time url not changing it keep remains same but content would be changed so on that event i need to crawl.
thank you,
G.kavirajan
yield FormRequest('http://addons.prestashop.com/en/modules/featureproduct/ajax-homefeatured.php',
formdata={'type':'new','ajax':'1'},
callback=self.your_callback_method)
bellow are the urls that you can easily catch using fiddler or firebug
this is for featured tab http://addons.prestashop.com/en/modules/featureproduct/ajax-homefeatured.php?ajax=1&type=random
this is for new tab http://addons.prestashop.com/en/modules/featureproduct/ajax-homefeatured.php?ajax=1&type=new
you can request on these url directly to get results you required, although website is using POST request to get data for these url, but i tried with parameter GET request is also working properly
Related
I am testing a login functionality on a 3rd party website. I have this url example.com/login . When I copy and paste this into the browser (chrome), page sometimes load, but sometime does not (empty blank white page).
The problem is that I have to run a script on this page to click one of the elements (all the elements are embedded inside #shadow-root). If the page loads, no problem, script is evaluated successfully. But page sometimes does not load and it returns a 404 in response to an XHR request, and as a result, my * eval(scrip("script") step returns "js eval failed...".
So I found the solution to refresh the page, and to do that, I am considering to capture the xhr request response. If the status code is 404, then refresh the page. If not, continue with the following steps.
Now, I think this may work, but I do not know how to implement karate's Intercepting HTTP Requests. And firstly, is that something doable?
I have looked into documentation here, but could not understand the examples.
https://github.com/karatelabs/karate/tree/master/karate-netty
Meanwhile, if there is another way of refreshing the page conditionally, I will be more than happy to hear about it. Thanks anyone in advance.
First, using JavaScript you should be able to handle shadow roots: https://stackoverflow.com/a/60618233/143475
And the above answer links to advanced examples of executing JS in the context of the current page. I suggest you do some research into that, try to take the help of someone who knows JS, the DOM and HTML well - and you should be find a way to know if the XHR has been made successfully or not - for e.g. based on whether some element on the page has changed etc.
Finally here is how you can do interception: https://stackoverflow.com/a/61372471/143475
So, I'm trying to scrape a website with infinite scrolling.
I'm following this tutorial on scraping infinite scrolling web pages: https://blog.scrapinghub.com/2016/06/22/scrapy-tips-from-the-pros-june-2016
But the example given looks pretty easy, it's an orderly JSON object with the data you want.
I want to scrape this https://www.bahiablancapropiedades.com/buscar#/terrenos/venta/bahia-blanca/todos-los-barrios/rango-min=50.000,rango-max=350.000
The XHR response for each page is weird, looks like corrupted html code
This is how the Network tab looks
I'm not sure how to navigate the items inside "view". I want the spider to enter each item and crawl some information for every one.
In the past I've succesfully done this with normal pagination and rules guided by xpaths.
https://www.bahiablancapropiedades.com/buscar/resultados/0
This is XHR url.
While scrolling the page it will appear the 8 records per request.
So do one thing get all records XPath. these records divide by 8. it will appear the count of XHR requests.
do below process. your issue will solve. I get the same issue as me. I applied below logic. it will resolve.
pagination_count = xpath of presented number
value = int(pagination_count) / 8
for pagination_value in value:
url = https://www.bahiablancapropiedades.com/buscar/resultados/+[pagination_value]
pass this url to your scrapy funciton.
It is not corrupted HTML, it is escaped to prevent it from breaking the JSON. Some websites will return simple JSON data and others, like this one, will return the actual HTML to be added.
To get the elements you need to get the HTML out of the JSON response and create your own parsel Selector (this is the same as when you use response.css(...)).
You can try the following in scrapy shell to get all the links in one of the "next" pages:
scrapy shell https://www.bahiablancapropiedades.com/buscar/resultados/3
import json
import parsel
json_data = json.loads(response.text)
sel = parsel.Selector(json_data['view']) # view contains the HTML
sel.css('a::attr(href)').getall()
I'm scraping http://www.germandeli.com/Meats/Sausages
I would like to extract the link for every product(or item) from the page. I use scrapy shell to test but it keeps return the empty value [ ].
Here is the code I use:
response.xpath('*//h2[#class="item-cell-name"]/a/#href')
Any helps would be greatly appreciated.
Well unfortunately the item content is rendered through JS. But luckily the URL sends a AJAX request to fetch a JSON of the items. This makes it much easier for us to parse it. You can check the XHR tab in the google chrome console to imitate the request with the required headers.
This URL returns the list of products. The limit and the offset parameters in the URL can be played around with to fetch the next set of data. Also to parse the JSON content you can use json.loads from the standard library.
Hi all I have seen lots of questions regarding this. I know that javascript dynamic page will rendered using scrapyjs or webdriver like selenium or phantomjs. webdriverkit is bit slow. I want somebody to guide me in this link
Price info before view deal button. I don't know which js is executing for this to use splash, scrapyjs can someone help me for this link.
thanks in advance.
EDIT
as per andres reply i have recreated XHR request. when we enter the XHR request url in browser window since it is a GET method if first hit i got partial json output. if we hit reload next time it loads more data that seems weired. can anyone help me in this. thanks in advance
When you request this URL:
http://ar.trivago.com/?iPathId=38715&iGeoDistanceItem=47160&aDateRange%5Barr%5D=2016-01-01&aDateRange%5Bdep%5D=2016-01-02&iRoomType=7&tgs=4716002&aHotelTestClassifier=&aPriceRange%5Bfrom%5D=0&aPriceRange%5Bto%5D=0&iIncludeAll=0&iGeoDistanceLimit=20000&aPartner=&iViewType=0&bIsSeoPage=false&bIsSitemap=false&
An XHR request is made to:
http://ar.trivago.com/search/region?iPathId=38715&bDispMoreFilter=false&iSlideOutItem=47160&aDateRange%5Barr%5D=2016-01-01&aDateRange%5Bdep%5D=2016-01-02&aCategoryRange=0%2C1%2C2%2C3%2C4%2C5&iRoomType=7&sOrderBy=relevance%20desc&aPartner=&aOverallLiking=1%2C2%2C3%2C4%2C5&iGeoDistanceLimit=20000&iOffset=0&iLimit=25&iIncludeAll=0&bTopDealsOnly=false&iViewType=0&aPriceRange%5Bfrom%5D=0&aPriceRange%5Bto%5D=0&iGeoDistanceItem=47160&aGeoCode%5Blng%5D=-0.1589&aGeoCode%5Blat%5D=51.513802&bIsSeoPage=false&mgo=false&bHotelTestContext=false&th=false&aHotelTestClassifier=&bSharedRooms=false&bIsSitemap=false&rp=&sSemKeywordInfo=&tgs=4716002&bRecommendedItem=false&iFilterTab=0&&_=1446673248317
Where you can find these values (in JSON format):
Which are the ones showed here:
So I think you don't need any ScrapyJS nor PhantomJS to scrape that information. Just understand where is it getting the information from and scrape the endpoint, directly.
I'm using Apache Wicket and I have following problem:
Inside a onSubmit() method I am sending a POST request to external web address with Apache httpClient. As a response I get html (inside my response object).
How can I get Wicket to render this html in browser?
So basically what I'm trying to do here, is simply what would normally happen if I submitted a html form to this web address. However for security reasons I don't want to give user pages containing forms that contain this data I'm trying to send.
You can get the response via getResponse() in any component. (I assume the onSubmit() is on a form).
How about something like:
getResponse().reset();
getResponse().write(htmlPage);
htmlPage should be a CharSequence containing the html page to be rendered.