Get URL of page requested that caused a 404

Question

How would I get the URL of the page that was requested that caused the 404 error?

For example, I type I go to http://example.com/path/does/not/exist/index.jsp I already have a custom 404 page but how would I go about retrieving the URL mentioned above so that I can display it with a message similar to "The url http://example.com/path/does/not/exist/index.jsp does not exist"?

Answer 1

If forward was used to go to the error page, you can obtain the original request URL by

request.getAttribute("javax.servlet.forward.request_uri")

or by EL

${requestScope['javax.servlet.forward.request_uri']}