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<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
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Migrating Applications from Tomcat 6 to Jboss AS 5.1
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created by <a href="http://community.jboss.org/people/bklein33">Bruce Klein</a> in <i>Beginner's Corner</i> - <a href="http://community.jboss.org/message/628617#628617">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p>  I have been assigned the task of migrating some applications that have been successfully running in Tomcat 6 to run inside the Jboss AS 5.1 container. I have had some success but I am not sure if I am going about it in the right way. The first challenge was with the classloaders which I was able to solve using the jboss-classloading.xml file in my application's war file under the WEB_INF dir. The contents of this file is discussed in the article by Joel Tosi(4/4/2011) entitled "Classloaders and You" which I have attached. The next challenge has been updating the tag library definitions. I keep running into errors like this:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>ERROR [<a class="jive-link-external-small" href="https://clairmail.jira.com/wiki/display/REG/cmmobile">cmmobile</a>] Servlet.service() for servlet cmmobile threw exception</p><p>org.apache.jasper.JasperException: The absolute uri: <a class="jive-link-external-small" href="http://tiles.apache.org/tags-tiles">http://tiles.apache.org/tags-tiles</a> cannot be resolved in either web.xml or the jar files deployed with this application.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I was albe to resolve this for the jstl libs by includign this in my web.xml file: </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><taglib></p><p><span>       <taglib-uri></span><a class="jive-link-external-small" href="http://java.sun.com/jstl/core" target="_blank">http://java.sun.com/jstl/core</a><span></taglib-uri></span></p><p>       <taglib-location>/WEB-INF/tld/c.tld</taglib-location></p><p>    </taglib></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span>and by downloading a c.tld file. None of this was neccessary for the the application to run under Tomcat 6. I am now running into the error described above. I manually changed web.xml to refrerence  </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" target="_blank">http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd</a><span> where in the previous Tomcat version it was pointing to  </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" target="_blank">http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd</a><span>. Similarly I manually changed the references in the tld files to "</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/javaee" target="_blank">http://java.sun.com/xml/ns/javaee</a><span> web-jsptaglibrary_2_1.xsd from  "</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/j2ee" target="_blank">http://java.sun.com/xml/ns/j2ee</a><span> web-jsptaglibrary_2_0.xsd.</span></p><p>Jboss seemed to complain about any references to j2ee.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So that leads me to my question of should I have to be manually edittting these references?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>How can I resolve the above issue? </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>All neccessary .jar files are present in the WEB-INF/lib dir however Jboss seems to ignore them in some cases.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any help in moving this forward would be greatly appreciated.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Regards,</p><p>Bruce Klein</p></div>
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