Tomcat: getHeader(“Host”) vs. getServerName()

Question

I\'ve got a Tomcat app that is being served up from multiple domains. Previous developers built a method to return the application URL (see below). In the method they reques

Answer 1

How about using something like I did in this demo JSP ?

<%
  String requestURL = request.getRequestURL().toString();
  String servletPath = request.getServletPath();
  String appURL = requestURL.substring(0, requestURL.indexOf(servletPath));
%>
appURL is <%=appURL%>