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POActiveMQ Web Console 5.6 on Tomcat 7 - Null Pointer in Taglibs
 

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  1. POActiveMQ Web Console 5.6 on Tomcat 7 - Null Pointer in Taglibs
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    <p>We're trying to deploy ActiveMQ Web Console 5.6 on Tomcat 7 (7.0.29 to be precise running against Java 1.7.0_07). </p> <p>After deploying the web console war manually we amended the instructions on <a href="http://activemq.apache.org/web-console.html" rel="nofollow">http://activemq.apache.org/web-console.html</a> as follows:</p> <ul> <li>We added activemq-all-5.6.0.jar, jetty.util.6.1.12.jar, and commons-logging-1.1.jar to the ${cataline_home}/lib directory</li> <li>We added the following to catalina.bat: CATALINA_OPTS=-Xms4m -Xmx256m -Dwebconsole.type=properties -Dwebconsole.jms.url=tcp://localhost:61616 -Dwebconsole.jmx.url=service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=7777 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false</li> </ul> <p>Tomcat then starts happily, and we can see the landing page of the web console (http://localhost:8080/activemq-web-console-5.6.0/), but when we try to access:</p> <pre><code>http://localhost:8080/activemq-web-console-5.6.0/queueGraph.jsp </code></pre> <p>we get the following stack trace:</p> <pre><code>SEVERE: Servlet.service() for servlet [jsp] in context with path [/activemq-web-console-5.6.0] threw exception [PWC6033: Unable to compile class for JSP] with root cause java.lang.NullPointerException at org.apache.taglibs.standard.tlv.JstlBaseTLV.validate(JstlBaseTLV.java:178) at org.apache.taglibs.standard.tlv.JstlCoreTLV.validate(JstlCoreTLV.java:134) at org.apache.jasper.compiler.TagLibraryInfoImpl.validate(TagLibraryInfoImpl.java:913) at org.apache.jasper.compiler.Validator.validateXmlView(Validator.java:1891) at org.apache.jasper.compiler.Validator.validate(Validator.java:1859) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:210) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:435) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:608) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:360) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.activemq.web.SessionFilter.doFilter(SessionFilter.java:45) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.activemq.web.filter.ApplicationContextFilter.doFilter(ApplicationContextFilter.java:81) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:65) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Sep 25, 2012 1:04:13 PM org.apache.catalina.core.ApplicationContext log SEVERE: Servlet jsp threw unload() exception javax.servlet.ServletException: Servlet.destroy() for servlet jsp threw exception at org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:1485) at org.apache.catalina.core.StandardWrapper.stopInternal(StandardWrapper.java:1822) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5463) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1575) at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1564) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NoSuchFieldError: deferredExpression at org.apache.taglibs.standard.tag.common.core.ForEachSupport.release(ForEachSupport.java:212) at org.apache.jasper.runtime.TagHandlerPool.release(TagHandlerPool.java:197) at org.apache.jsp.queues_jsp._jspDestroy(org.apache.jsp.queues_jsp:41) at org.apache.jasper.runtime.HttpJspBase.destroy(HttpJspBase.java:100) at org.apache.jasper.servlet.JspServletWrapper.destroy(JspServletWrapper.java:424) at org.apache.jasper.compiler.JspRuntimeContext.destroy(JspRuntimeContext.java:347) at org.apache.jasper.servlet.JspServlet.destroy(JspServlet.java:410) at org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:1464) ... 11 more </code></pre> <p>Can anyone out there help?</p> <p>Please note: the exact same steps but with Tomcat 6.0.35 works fine.</p> <p>TIA</p> <p>Cheers, Andrew</p>
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