Selenium is encountering an issue where it is unable to automatically download files, as the download confirmation

While reviewing someone else's code, I encountered an issue with automatically downloading PDF files from a web page using selenium.

Despite setting the browser.helperApps.neverAsk.saveToDisk property to the PDF mime type, I am still getting the firefox download confirmation prompt.

I have tried downgrading my Firefox version from 70 to 60.0 but that did not solve the problem. It is unclear whether this is a code issue or a compatibility problem between Selenium and Firefox.

I would greatly appreciate any assistance.

edit: Here is what the download confirmation pop up looks like.


private static final String mimeTypeToSaveToDisk = "application/pdf;application/zip";

public void download(String url, String downloadDirPath) {          
    // Code for downloading
}
javascriptselenium

Answer №1

After reviewing your use of FirefoxOptions, I have a suggestion for you to try out - the useDownloadDir option. Although you are already utilizing browser.download.dir, this new setting may offer a different approach:

FirefoxOptions options = new FirefoxOptions();
options.setPreference("browser.download.folderList", 2);
options.setPreference("browser.download.dir", "C:\\Windows\\temp");
options.setPreference("browser.download.useDownloadDir", true);
options.setPreference("browser.helperApps.neverAsk.saveToDisk", "application/pdf");
options.setPreference("pdfjs.disabled", true);  // prevent PDF from opening after download

WebDriver driver = new FirefoxDriver(options);

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