Is there any specific available method in jsp/Servlet API which tell you from which page the request is being redirected

Question

I have been working in Oracle iStore from past 4 months and I have been managing the application without any IDE (basically doing all the chores on notepad only because appl

Answer 1

An easy way would be grabbing the (legendaric misspelled) HTTP referer header. You can get it in a Servlet as follows:

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

And in a JSP as follows:

${header.referer}

You should however realize that this is a client-controlled value and can be changed/spoofed/hacked to something entirely different or even removed.

If you want a bit more reliable approach, then you'll really need to add an extra parameter to the request. In a plain vanilla link you can set it as a query string.

<a href="b.jsp?from=a.jsp">go to b.jsp</a>

or as a hidden input element in a form:

<form action="b.jsp" method="post">
    <input type="hidden" name="from" value="a.jsp">
    ...

Either way, you can get in a Servlet as follows:

String from = request.getParameter("from");

or in a JSP as follows:

${param.from}

Answer 2

use request.getHeader("Referer");