groovy-core/src/examples/webapps/groovlet-examples/WEB-INF/web.xml

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_3.xsd"
    version="2.3">

  <servlet>
    <servlet-name>Groovlet</servlet-name>
    <servlet-class>groovy.servlet.GroovyServlet</servlet-class>
    <init-param>
      <param-name>verbose</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>resource.name.regex</param-name>
      <param-value>none</param-value>
    </init-param>
    <init-param>
      <param-name>resource.name.replacement</param-name>
      <param-value>none</param-value>
    </init-param>
  </servlet>
    
  <servlet>
    <servlet-name>Template|GSP</servlet-name>
    <servlet-class>groovy.servlet.TemplateServlet</servlet-class>
  </servlet>
  
  <servlet>
    <servlet-name>Template|GString</servlet-name>
    <servlet-class>groovy.servlet.TemplateServlet</servlet-class>
    <init-param>
      <param-name>template.engine</param-name>
      <param-value>groovy.text.GStringTemplateEngine</param-value>
    </init-param>
  </servlet>
  
  <servlet>
    <servlet-name>Template|XML</servlet-name>
    <servlet-class>groovy.servlet.TemplateServlet</servlet-class>
    <init-param>
      <param-name>template.engine</param-name>
      <param-value>groovy.text.XmlTemplateEngine</param-value>
    </init-param>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>Template|GSP</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>
  
  <servlet-mapping>
    <servlet-name>Template|XML</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>Groovlet</servlet-name>
    <url-pattern>*.groovy</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>index.jspx</welcome-file>
    <welcome-file>index.groovy</welcome-file>
  </welcome-file-list>

</web-app>