dotCMS 4.3.2 - Portlet Plugin

[Muneeswari Ramanathan]

Hi team,

I am using the dotCMS version 4.3.2. I downloaded the dotCMS plugin-seeds from the GitHub which is the latest 4.3.2. I am in need of creating a new struts portlet so I have taken the com.dotcms.portlet plugin.

The jar is built by the gradlew command and the jar is deployed into my local dotcms server. The state of the plugin is Active. I added my portlet under Contents Tab. When I click on my portlet, I get a blank page. When I check the dotcms.log file, the following exceptions are logged.

[24/05/18 14:13:28:804 IST] ERROR portlet.Activator: bytebuddy ClassReloadingStrategy not set [java agent not set?]

[24/05/18 14:13:28:815 IST]  INFO portlet.Activator: Added Struts Action Mapping: com.dotmarketing.osgi.portlet.HelloWorldAction

[24/05/18 14:13:29:000 IST]  INFO portlet.Activator: Added Portlet: PORTLET_432

[24/05/18 14:13:29:000 IST] ERROR job.Activator: Error reading ClassReloadingStrategy from bytebuddy [java agent not set?]

java.lang.IllegalStateException: The Byte Buddy agent is not installed or not accessible

at net.bytebuddy.dynamic.loading.ClassReloadingStrategy.fromInstalledAgent(ClassReloadingStrategy.java:148) ~[byte-buddy-1.6.12.jar:?]

at com.dotmarketing.osgi.GenericBundleActivator.initializeServices(GenericBundleActivator.java:129) [dotcms_4.3.2_ae725e9.jar:?]

at com.dotmarketing.osgi.job.Activator.start(Activator.java:37) [com.dotcms.job-0.1.jar:?]

at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697) [org.apache.felix.framework-5.6.2.jar:?]

at org.apache.felix.framework.Felix.activateBundle(Felix.java:2238) [org.apache.felix.framework-5.6.2.jar:?]

at org.apache.felix.framework.Felix.startBundle(Felix.java:2144) [org.apache.felix.framework-5.6.2.jar:?]

at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998) [org.apache.felix.framework-5.6.2.jar:?]

at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1253) [org.apache.felix.fileinstall-3.5.8.jar:3.5.8]

at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1225) [org.apache.felix.fileinstall-3.5.8.jar:3.5.8]

at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:512) [org.apache.felix.fileinstall-3.5.8.jar:3.5.8]

at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:361) [org.apache.felix.fileinstall-3.5.8.jar:3.5.8]

at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:312) [org.apache.felix.fileinstall-3.5.8.jar:3.5.8]

Caused by: java.lang.ClassNotFoundException: net.bytebuddy.agent.Installer

at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_91]

at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_91]

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_91]

at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_91]

at net.bytebuddy.dynamic.loading.ClassReloadingStrategy.fromInstalledAgent(ClassReloadingStrategy.java:142) ~[byte-buddy-1.6.12.jar:?]

... 11 more

[24/05/18 14:13:29:000 IST] ERROR job.Activator: bytebuddy ClassReloadingStrategy not set [java agent not set?]

and, 

[24/05/18 14:15:15:602 IST] ERROR action.RequestProcessor: No action instance for path /ext/strutshello/view_hello could be created

java.lang.ClassNotFoundException: com.dotmarketing.osgi.portlet.HelloWorldAction

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305) ~[catalina.jar:8.0.18]

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157) ~[catalina.jar:8.0.18]

at com.dotcms.repackage.org.apache.struts.util.RequestUtils.applicationClass(RequestUtils.java:119) ~[dot.struts-1.2.4_2.jar:1.2.4]

at com.dotcms.repackage.org.apache.struts.util.RequestUtils.applicationInstance(RequestUtils.java:145) ~[dot.struts-1.2.4_2.jar:1.2.4]

at com.dotcms.repackage.org.apache.struts.action.RequestProcessor.processActionCreate(RequestProcessor.java:282) [dot.struts-1.2.4_2.jar:1.2.4]

at com.dotcms.repackage.org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:220) [dot.struts-1.2.4_2.jar:1.2.4]

at com.liferay.portal.struts.PortletRequestProcessor.process(PortletRequestProcessor.java:91) [dotcms_4.3.2_ae725e9.jar:?]

at com.liferay.portlet.StrutsPortlet.include(StrutsPortlet.java:148) [dotcms_4.3.2_ae725e9.jar:?]

at com.liferay.portlet.StrutsPortlet.doView(StrutsPortlet.java:100) [dotcms_4.3.2_ae725e9.jar:?]

at com.dotcms.repackage.javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:235) [dot.portlet-1.0_2.jar:?]

at com.dotcms.repackage.javax.portlet.GenericPortlet.render(GenericPortlet.java:163) [dot.portlet-1.0_2.jar:?]

at com.liferay.portlet.CachePortlet.render(CachePortlet.java:159) [dotcms_4.3.2_ae725e9.jar:?]

at org.apache.jsp.html.portal.layout_jsp._jspService(layout_jsp.java:618) [ROOT/:?]

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) [jasper.jar:8.0.18]

Your valuable suggestions will help me to make my custom portlet work well. 

Thank you.

[Jason Tesser]

seems like maybe you do not have the bytebuddy agent when starting dotCMS 

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[jonathan...@dotcms.com]

check your settings on startup script, the java agent should looks like this:

 -javaagent:$DOTCMS_HOME/WEB-INF/lib/byte-buddy-agent-1.6.12.jar