How to obtain the current base URL dynamically? [duplicate]

Answer 1

You could use JSTL as follows to obtain the site's base URL:

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

${req.requestURL}

...

(the req is in the above example just a shorthand to the current instance of HttpServletRequest, the line basically converts the StringBuffer returned by HttpServletRequest#getRequestURL() to String so that it can be used in the string functions)

Then you can create the link as follows:

${base}example.jsp

Or maybe, when using the HTML tag which makes all relative links in the document relative to it:

    


    ${base}example.jsp