JSP : How to get the URL Address of the page that redirects to another page in java?

Question

I'd like to get an URL address of the page that redirects me to another page, in other words suppose that I have three jsp file with the names of one.jsp, two.jsp and three.jsp. the codes of each of them can be seen in the below section:

one.jsp

    <a href="two.jsp">go to page two</a>

two.jsp

        <%
            response.sendRedirect("three.jsp");
        %>

three.jsp

        <%
            out.print(request.getHeader("referer"));
        %>

the out put of these will be http://localhost:8080/one.jsp , but instead I expected to get http://localhost:8080/two.jsp as the result.

Now I've got two question:

1. why I get 'one.jsp' as a result?
2. How can i get the URL address of pages that do redirecting? ( in this case two.jsp )

Answer 1

This behaviour depends on the browser and seems not to be defined, see this question .

Therefore it is simpler to add parameter information about the redirect to the redirect URL and evaluate that parameter in three.jsp :

two.jsp:

<%response.sendRedirect("three.jsp?source=two");%>