gistfile1.xml

<servlet>
   <servlet-name>default</servlet-name>
   <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>   
   <init-param>
      <param-name>debug</param-name>
      <param-value>0</param-value>
   </init-param>
   <init-param>
      <param-name>listings</param-name>
      <param-value>false</param-value>  <!-- make sure this is false -->
   </init-param>
   <load-on-startup>1</load-on-startup>
</servlet>