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A few caveats arise, as for instance while the System.out and System.err are redirected as per above, no logging of these is done to files. You will need more legwork to do to make the additional logging. It is important to backup and restore the original streams as the above example does. The servlet should not be used to process several requests in parallel (some synchronization should be added to the above code to prevent that). Also, notice the use of getOutputStream(): when this method is called, the getWriter() method can no longer be used in the same response object.

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Basically, this works just as described in http://tomcat.apache.org/tomcat-57.50-doc/jndi-resources-howto.html: Within your application, you are using the standard JNDI and JMS API calls. In web.xml (the container independent application descriptor), you specify resource references (stub resources). And in context.xml (the container specific application descriptor), you are actually configuring the JMS connection.

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