How to get my URL path?

I would like to show my current url path when I execute a jsp page.

I write a javabean file, using this method:

String currentdir = System.getProperty("user.dir");

Then print it out in my jsp page, it shows:

D:\Program Files\Apache Software Foundation\Tomcat 5.5 but my desired answer should be:

http://roamer:8080/myweb/

How can I acheive this purpose? Beside, I tried

getServletConfig().getServletContext().getRealPath("/") and it returns nothing in my jsp page, I guess the reason is I am calling this page as a java bean, not via a servlet call, thus the related object, function, method are not available. Am I right?

[672 byte] By [roamera] at [2007-11-27 10:46:20]