How to get previous page URL from request using a servlet

问题

How do I get the previous page URL from request using a servlet. For example, I'm from the index.html and I submitted a form from index, how do I get the index.html URL and use it in a servlet?

request.getRequestURL()

getRequestURL doesn't work since it only returns the URL of the servlet.

回答1:

Write in your Servlet the following code

String url = request.getHeader("referer");

This worked in my case.Hope it works for you as well

回答2:

I think request.getAttribute("javax.servlet.forward.request_uri") this works.

来源：https://stackoverflow.com/questions/29874539/how-to-get-previous-page-url-from-request-using-a-servlet