webstart/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
   <servlet>
      <servlet-name>JnlpDownloadServlet</servlet-name>
      <servlet-class>jnlp.sample.servlet.JnlpDownloadServlet</servlet-class>
   </servlet>
   <servlet-mapping>
      <servlet-name>JnlpDownloadServlet</servlet-name>
      <url-pattern>*.jnlp</url-pattern>
   </servlet-mapping>
</web-app>