Scraping Data from a website in JSON format
Summary
TLDRThis video demonstrates how to extract information from websites and convert it into JSON format using the Proxy Board API. It showcases a complex example of scraping a website for book details, including image links, prices, and titles, by sending an HTTP POST request with CSS selectors.
Takeaways
- 🌐 The video demonstrates how to extract information from a website and retrieve it as a JSON format.
- 📚 The example uses a documentation page to show a basic web scraping example with an HTTP POST request to a proxy board API.
- 🔍 To extract data, the video explains the necessity of specifying the target website's URL and providing CSS selectors.
- 🛠️ The video focuses on a complex example where the system service is instructed to send back a formatted JSON response.
- 🎯 For demonstration, a web scraping playground website is used to extract information about Tommy books.
- 📖 The desired output is a JavaScript object containing the image link, price, and title for each book.
- 🕵️♂️ The video instructs how to use developer tools to identify and target specific CSS elements for data extraction.
- 📝 It outlines the process of preparing a POST request with the necessary CSS selectors for the desired elements.
- 📊 The video shows the use of Postman to send a POST request to the proxy bot API with the target URL and CSS selectors.
- 📈 The response from the request is an array of objects in JSON format, each containing the extracted data for a book.
- 💾 The extracted information can be saved in a database or used in a UI website, as suggested by the video.
Q & A
What is the main topic of the video?
-The main topic of the video is demonstrating how to extract information from a website and retrieve it in JSON format using web scraping techniques.
What is a basic example of web scraping mentioned in the video?
-A basic example of web scraping mentioned in the video is sending an HTTP POST request to the proxy board API with the target website's URL and CSS selectors to get data extracted for each element.
What is the purpose of the complex example shown in the video?
-The purpose of the complex example is to show how to force the system service to send a formatted response in JSON format.
Which website is used for the demonstration in the video?
-The website used for the demonstration is a playground for web scraping that contains information about Tommy books.
What specific information about each book is the video aiming to extract?
-The video aims to extract the image link, price, and title of each book as a JavaScript object.
How can one identify the CSS elements to target for scraping?
-One can identify the CSS elements to target by using the developer tools and console in a web browser to inspect specific elements.
What is the format of the response expected from the system service in the complex example?
-The expected format of the response from the system service in the complex example is JSON.
What tool is used in the video to send the POST request to the proxy bot API?
-The tool used in the video to send the POST request is Postman.
What is the structure of the request body when sending a POST request to the proxy bot API?
-The structure of the request body includes the URL of the target website and an array of CSS selectors for the elements to be extracted.
How is the extracted data presented in the response?
-The extracted data is presented as an array in JSON format, containing information about each book such as title, price, image link, and other details.
What can one do with the extracted information after the demonstration?
-One can save the extracted information in a database or use it in a user interface of a website.
Outlines
🔍 Extracting Website Data as JSON
This video introduces a method for extracting information from a website and converting it into a JSON format using the Proxy Board API. The demonstration begins with a simple example of sending an HTTP POST request to the Proxy Board API, specifying the target website URL and CSS selectors to retrieve data. The focus then shifts to a more complex example where the system is instructed to return a formatted JSON response. The video uses a web scraping playground website as an example, aiming to extract details about Tommy books, including image links, prices, and titles. The process involves identifying CSS elements using browser developer tools and crafting a POST request to extract specific data.
Mindmap
Keywords
💡Web Scraping
💡JSON
💡HTTP POST Request
💡CSS Selectors
💡Proxy Board API
💡Data Extraction
💡Postman
💡JavaScript Object
💡HTML Elements
💡Dev Tools
💡Data Storage
Highlights
Introduction to extracting information from a website using Proxy Board.
Demonstration of a basic web scraping example using Proxy Board API.
Explanation of sending an HTTP POST request to Proxy Board API with a specified URL.
Need to provide CSS selectors to extract data.
Introduction of a complex example for extracting formatted JSON response.
Using a playground website for web scraping demonstration.
Objective to extract book information including image link, price, and title.
Explanation of targeting CSS elements using developer tools.
Description of the structure of the webpage for scraping book information.
Details on how to prepare the POST request with CSS selectors.
Demonstration of sending the POST request using Postman.
Specification of the target website URL in the POST request.
Example of requests containing CSS selectors in the POST request body.
Description of how the response will contain extracted data in JSON format.
Explanation of the JSON format containing title, price, image link for each book.
Suggestion to save the extracted information in a database or use it in a UI website.
Encouragement to like and subscribe for more similar content.
Transcripts
[Music]
hi and welcome to proxy board in this
quick video I'd like to show you how you
can extract information from the website
and get it back as a JSON let's see a
basic example if you go to documentation
page then we'll find a basic web
scrapping example and it shows that you
simply need to send HTTP POST request to
proxy board api you need to specify URL
of your target website and then you need
to provide CSS selectors and you'll get
back data extracted for each element but
in this video we interested in this
small complex example where you can
force system service to send formatted
response back and then it will have
format of a JSON so let's see how we can
use it for the demo purposes I'm going
to use this website
it's basically playground for web
scrapping and it contains information
about Tommy books what would like to get
back is to extract information about
each book and receive it as a JavaScript
object containing image link price and
title in order to do that we need to
know how to target the CSS elements and
if you go to dev tools and the open
console then you can target specific
elements for example this image we can
see that it's inside article which holds
information about this book and inside
this article will have link which will
contain link value then we'll have image
will have source of this image it also
contains title of this book as alt
attribute however there is also title an
H ref and there's also price inside P
tag with the class price color I or J
took all these values in order to
prepare
example post request so let's see it in
action if we'll go to postman you'll see
that I'm sending post request to proxy
bot API and I'm specifying URL of our
target web site books dot to scrape calm
and in the body I have example of
requests containing CSS selectors so we
see that we're targeting article product
underscore pod which is container
holding all values inside one book I'll
show you it's here then we specify that
I want to get back chasing and then
we're specifying array of selectors so
we're saying okay select h3 get text
from this element and return it as title
and then we're doing it the same for
price image and link and if you send
this request the response will contain
extracted data as you can see data will
be array that will containing that
contains information about each book in
JSON like format so that will be title
will be price image link and will be the
same for all books found on this page so
as you can see it's pretty easy at this
point you can take this information save
it in your database or using your ui
website so I think that's all I wanted
to show you if you found this video
interesting useful please hit the like
button if you want to see more videos
like that hit the subscribe button
otherwise until next time see ya
Посмотреть больше похожих видео
5.0 / 5 (0 votes)