URL after sendRedirect and forward

Question

Hi,
          As I know, after execute response.sendRedirect("URL"),the URL in the
          browser will be changed.But in this case , it is still the original one.My
          server is NT4.0,Weblogic server 5.1 sp6,ie5
          step1:
          test.jsp
          <% response.sendRedirect("in1.jsp"); %>
          <jsp:forward page="in2.jsp" />
          the result URL is http://localhost:7001/MyApp/in1.jsp (Correct)
          step2: then change test.jsp to
          <jsp:forward page="in2.jsp" />
          <% response.sendRedirect("in1.jsp"); %>
          the result URL is http://localhost:7001/MyApp/test.jsp (Correct)
          step3: change test.jsp same as step1
          <% response.sendRedirect("in1.jsp"); %>
          <jsp:forward page="in2.jsp" />
          the result URL is http://localhost:7001/MyApp/test.jsp (incorrect)
          but the title of this page is http://localhost:7001/MyApp/in1.jsp - ...
          So, what's the matter with this one , is this a bug?
          Thank you for your attention.
          

Answer 1

As to which one is best, there are situations where both are useful.
A redirect has the disadvantage that it loses all request parameters/attributes (because it creates a new request)
The advantage to it is that if the user refreshes the screen (using F5, or pushing refresh button) it only refreshes the page that was redirected to.
If you do an internal forward,
You might find this article of use: http://www.theserverside.com/patterns/thread.tss?thread_id=20936