public class Init
extends javax.servlet.http.HttpServlet

The server-side component of Isomorphic SmartClient needs to know the location of the webRoot directory on the filesystem for many operations. Application Servers make this information available via the ServletContext class made available to Filters and Servlets.

To ensure correct operation of the SmartClient server-side componentry, register this servlet in your web.xml with a load-on-startup priority of 1 (or zero if you container permits this) - like so:

 <servlet>
     <servlet-name>Init</servlet-name>
     <servlet-class>com.isomorphic.base.Init</servlet-class>
     <load-on-startup>1</load-on-startup>
 </servlet>
 

This servlet is necessary purely for initialization purposes, so it is not necessary to configure a servlet-mapping for it.

Note: if you do not wish to (or cannot) register this servlet in web.xml, you can instead call its static go() method with your ServletContext from your jsp, Servlet or Filter (you can call filterConfig.getServletContext() to obtain a ServletContext from within a Filter init() method).