& chown -R pptruser:pptruser /home/pptruser RUN groupadd -r pptruser & useradd -r -g pptruser -G audio,video pptruser \ # same layer as npm install to keep re-chowned files from using up several hundred MBs more space # Add user, so we don't need -no-sandbox. & apt-get install -y /tmp/b -no-install-recommends -allow-downgrades fonts-ipafont-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-kacst fonts-freefont-ttf \ # Uncomment to skip the chromium download when installing puppeteer. # uncomment the following lines to have `dumb-init` as PID 1 # If running Docker >= 1.13.0 use docker run's -init arg to reap zombie processes, otherwise & apt-get install -y google-chrome-unstable fonts-ipafont-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-kacst fonts-freefont-ttf \ & sh -c 'echo "deb stable main" > /etc/apt//google.list' \ # Note: this installs the necessary libs to make the bundled version of Chromium that Puppeteer We're going to use HTTPBin which can help us with our solution testing.# Install latest chrome dev package and fonts to support major charsets (Chinese, Japanese, Arabic, Hebrew, Thai and a few others) To do that, we have to intercept the request using page.on('request') handler. The idea behind our approach is quite simple - we need to change the request type while opening the page, so we can send POST data along with opening a page. Unfortunately, Puppeteer developers haven't introduced the native way of making requests other than GET, but it's not a big deal for us to create a workaround. Thus, many sites use POST requests for client-server communication and this requires the ability of sending POST requests while web scraping.
Nowadays SPAs (Single Page Applications) also use POST requests to send data to API, but such requests usually return only necessary data to update web page and not the whole page.
It is also one of the ways to send any data to the web server.Įarlier, one of the main implementation patterns of login or registration was to send the form data with the required authorization parameters via POST request and get the protected content as a response to this request (along with cookies to avoid re-entering the authentication and authorization data). POST requests usage is one of the main ways to send form data during login or registration. By design, this method is used to send data to a web server for processing and possible storage. POST request is one of several available HTTP request types. Why do we need POST while web scraping?
Let's check out the workaround for this situation and create a helper function to fix this out. Still, this functionality is not included in Puppeteer's API as a separate function. Making POST, PUT, and DELETE requests is a crucial web scraping and web testing technique.
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