Why would StringUtils return the incorrect # of matches of a substring?

Question

I am using StringUtils from the apache commons library to check the # of matches of a substring within the source code of an html page.

I have converted the page source using the webdriver command:

String pageSource = driver.getPageSource();    

The code I am using to find # of matches is:

int cloudfCount = StringUtils.countMatches(pageSource, "cloudfront");
System.out.println("There are " + cloudfCount + " instances of cloudf text found within the page source.");

When I right-click within the page, view source, then ctrl-f to "find" cloudfront, I get 2 matches. Which is what I am expecting.

But when I use the above code in an automated Selenium script, I am getting 5 results.

Any thoughts/ideas on where I'm going wrong?

Could it somehow be related to the fact that the "cloudfront" text is part of 2 javascript tags within the page source?

Thank you.

Answer 1

You are comparing apples and oranges. Selenium works off the DOM, not off the page source. For a more fair comparison, try opening the browser debugger and searching for "cloud front".