how to get current page's URL with "doPost" method ?

I have a servlet which forwards to a JSP page. In the JSP page, I need to change <base href=".."> for few times because on my page there are links to other server domains. Meanwhile, in the page I create some anchors for sections in the page. Thus, if the anchor click needs to work, it needs to turn the href back to the current page's URL. However, the URL is always "http://server/servlet/MyServlet" because it uses POST method. I tried

<base href="http://server/servlet/MyServlet?"<%= request.getQueryString() %>">

but it doesn't work. what can I do to pull the <base> back to current page so that anchor for sections will work ?

Why aren't you using relative URLs?

Originally posted by Ben Souther:
Why aren't you using relative URLs?

For the anchor link I did use relative link. The problem is I need to turn the "base" into current page so that the relative link will work. And that's why I want to kow how I can do that using "request" related API.

Artemesia,

If you need a static variable, just create a new parameter called "current" and use requestDispatcher to forward it to the JSP.

In your JSP, use the following call: -

If you want to get the context than I would suggest using: -

This will give you "/" in your case.

I am not sure I understand your problem completely.
But if the problem is that you are using a RequestDispatcher to forward the reponse to a JSP, and hence the url in address bar is still pointing to the original servlet, you can try using HttpServletResponse.sendRedirect() method instead.

he URL is always "http://server/servlet/MyServlet"

Your use of /servlet/ indicates that you may be getting tangled up in problems related to the "invoker" servlet. See this FAQ on the invoke here at the ranch.
Bill