tests/test-webapps/test-jndi-webapp/src/main/webapp/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
   xmlns="http://java.sun.com/xml/ns/javaee" 
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
   metadata-complete="true"
   version="2.5"> 

  <display-name>Test JNDI WebApp</display-name>
  
  <servlet>
    <servlet-name>JNDITest</servlet-name>
    <servlet-class>com.acme.JNDITest</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>JNDITest</servlet-name>
    <url-pattern>/test/*</url-pattern>
  </servlet-mapping>

  <env-entry>
    <env-entry-name>wiggle</env-entry-name>
    <env-entry-type>java.lang.Double</env-entry-type>
    <env-entry-value>99.99</env-entry-value>
    <injection-target>
      <injection-target-class>com.acme.JNDITest</injection-target-class>
      <injection-target-name>wiggle</injection-target-name>
    </injection-target>
  </env-entry>

  <resource-ref>
    <res-ref-name>mail/Session</res-ref-name>
    <res-type>javax.mail.Session</res-type>
    <res-auth>Container</res-auth>
  </resource-ref>

  <resource-ref>
    <res-ref-name>jdbc/mydatasource1</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
    <injection-target>
      <injection-target-class>com.acme.JNDITest</injection-target-class>
      <injection-target-name>myDatasource</injection-target-name>
    </injection-target>
  </resource-ref>


  <post-construct>
    <lifecycle-callback-class>com.acme.JNDITest</lifecycle-callback-class>
    <lifecycle-callback-method>postConstruct</lifecycle-callback-method>
  </post-construct>

  <pre-destroy>
    <lifecycle-callback-class>com.acme.JNDITest</lifecycle-callback-class>
    <lifecycle-callback-method>preDestroy</lifecycle-callback-method>
  </pre-destroy>

</web-app>