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POmail/Session Resource Factory does not work in Struts application
 

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    <p>I want to use the standard resource factory provided by Tomcat 6.0, which create javax.mail.Sessions instance for me. As described in the <a href="http://tomcat.apache.org/tomcat-6.0-doc/jndi-resources-howto.html" rel="nofollow noreferrer">JNDI Resource HOW-TO tutorial</a>.</p> <p>My META-INF/context.xml looks like: </p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;Context reloadable="true"&gt; &lt;Resource name="mail/Session" auth="Container" type="javax.mail.Session" mail.smtp.host="smtp.gmail.com" mail.smtp.port="587" mail.smtp.auth="true" mail.smtp.user="someone@gmail.com" mail.smtp.password="secretpassword" mail.smtp.starttls.enable="true"/&gt; &lt;/Context&gt; </code></pre> <p>I have the next resource-ref in my WEB-INF/web.xml, just before &lt;/webapps>. Web.xml validates. I validated using <a href="https://stackoverflow.com/questions/15732/whats-the-best-way-to-validate-an-xml-file-against-an-xsd-file/16054#16055">McDowell's way</a>. </p> <pre><code>&lt;resource-ref&gt; &lt;description&gt;Resource reference to a factory for javax.mail.Session instances that may be used for sending electronic mail messages, preconfigured to connect to the appropiate SMTP server. &lt;/description&gt; &lt;res-ref-name&gt;mail/Session&lt;/res-ref-name&gt; &lt;res-type&gt;javax.mail.Session&lt;/res-type&gt; &lt;res-auth&gt;Container&lt;/res-auth&gt; &lt;/resource-ref&gt; </code></pre> <p> </p> <p>I am using the next code snipett access my javax.mail.Session object. </p> <pre><code>Context initCtx = new InitialContext(); Context envCtx = (Context) initCtx.lookup("java:comp/env"); Session session = (Session)envCtx.lookup("mail/Session"); System.out.println("HERE smtp.user: " + session.getProperty("mail.smtp.user")); </code></pre> <p>I tested it in a sample app and it worked. Unfortunately when I moved the same code to a struts application, I get NULL in the above print statement. I do the context look up in singleton Class called mailer (which is defined in my WEB-INF/classes folder) but I get the same problem if i do the context look up in Struts action class.</p> <p>I have been thinking about what is different to find the problem. My struts application web.xml is more complicated than simple application's web.xml. It has security-constraint, filters and the Struts Servlet configuration. I position resource-ref just before the servlet definitions. It seems like the resource-ref is being ignored. </p> <p>I have another issue. If I have the mailapi.jar, needed by the javax.mail.Session, in the myapp/WEB-INF/lib folder I get: </p> <p>java.lang.NoClassDefFoundError: javax/mail/Authenticator</p> <p>If I put it in $CATALINA_HOME/lib is found.</p> <p>Any ideas? I use struts and hibernate. Maybe it has something to do with that.</p> <h2>Debug</h2> <p>I tried to debug it puting the debug attribut in context </p> <pre><code>&lt;Context reloadable="true" debug="99" ... </code></pre> <p>But I do not see anything interesting.</p> <pre><code>01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() 01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() 01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() 01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() 01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() 01-feb-2009 17:39:09 org.apache.catalina.core.ApplicationContext log </code></pre> <p>I tried:</p> <pre><code>Session session = (Session) initCtx.lookup("java:comp/env/mail/Session"); </code></pre> <p>instead of:</p> <pre><code>Context envCtx = (Context) initCtx.lookup("java:comp/env"); Session session = (Session)envCtx.lookup("mail/Session"); </code></pre> <p>But I am still getting a NULL Session object.</p> <h2>Partial Solution</h2> <p>When I put the Resource element inside $CATALINA_HOME/conf/context.xml file, it works.</p>
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