const puppeteer = require('puppeteer') Īwait tViewport(. It goes to a generic search in google and downloads the google image at the top left. If your needs to download a file are more simplistic, you can probably use the other methods mentioned on this thread, or the linked thread.Here is another example. The details of DownloadFileRequiringHeadersAndCookies are here. To skip the download, download into another path, or download a different browser, see Environment variables. In our case, we want to tell it where since it provides greater flexibility on sharing files and processing them in an expedited manner. Var cookieContainer = new CookieContainer() ĬookieContainer.Add(new Cookie(cookie.Name, cookie.Value, cookie.Path, cookie.Domain)) To use Puppeteer in your project, run: npm i puppeteer or 'yarn add puppeteer' When you install Puppeteer, it downloads a recent version of Chromium (170MB Mac, 282MB Linux, 280MB Win) that is guaranteed to work with the API. Chrome defaults to downloading files in various places, depending on the operating system. Populate the Cookie Container like this: private CookieContainer BuildCookieContainer(IEnumerable cookies) NEED THIS TIMEOUT TO KEEP THE BROWSER OPEN WHILE THE FILE IS DOWNLOADING!Īwait page.WaitForTimeoutAsync(1000 * configs.DownloadDurationEstimateInSeconds) Var cookieContainer = BuildCookieContainer(pageCookies) Īwait DownloadFileRequiringHeadersAndCookies(getUrl, fullPath, cookieContainer, cancellationToken) Īwait page.ClickAsync("button") Var pageCookies = await page.GetCookiesAsync() Add the cookies to a container for the upcoming Download GET request If (contentType.Contains("application/vnd.ms-excel")) Handle the response with the Excel download
Page.Response += async (sender, responseCreatedEventArgs) => Handle multiple responses and process the Download await using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions ))Īwait using (var page = await browser.NewPageAsync()) Once I had that particular response, I had to attach headers and cookies for the remote server to send the downloadable data in the response.
In essence, before the button click, I had to process multiple responses and handle a single response with the download.
There are many ways you can download files with Puppeteer. I hope the explanations and code examples shared above gave you a better understanding of how to file download works in Puppeteer. The implementation of a file downloader is pretty straightforward in this scenario. Our main script simultaneously spawns 4 instances of chrome and initiates file download in parallel. I needed both Headers and Cookies set before the download would start. Download files in Puppeteer with a click of a button In the fortunate case that the website you want to scrape files from uses buttons, then all you need to do is simulate the click event in Puppeteer.
I had a more difficult variation of this, using Puppeteer Sharp.
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