| Problem of Classloader in Eclipse Plugin Developemt. [message #331579] |
Fri, 12 September 2008 02:59  |
Eclipse User |
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I am trying to use Tomcat 5.5.7 in Eclipse 3.0 plugin development
environment.I created a plugins jar and put into plugins directory of
Eclipse 3.0 and started the eclipse 3.0.
when I clicked run button it gives me this exception.But this class
"LogFactory" is already present in commons-logging-api.jar.
I guess at runtime classloader could not able to load this particular jar
file.I tried with all scenarios by mentioning in Manifest.mf file as well
as in plugin.xml under tag <runtime>.
But it give the same exception.
Please help me out and your solution will be appreciated.
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at
org.apache.catalina.core.StandardService.<clinit>(StandardService.java:53)
at
com.selectica.mbeclipse.utils.StartTomcat.startTomcat(StartT omcat.java:52)
at
com.selectica.mbeclipse.utils.StartTomcat.getInstance(StartT omcat.java:22)
at
com.selectica.mbeclipse.actions.CxRunKBAction.startNewDefaul tGUI(CxRunKBAction.java:539)
at
com.selectica.mbeclipse.actions.CxRunKBAction.runKbHTMLDefau ltGui(CxRunKBAction.java:360)
at
com.selectica.mbeclipse.actions.CxRunKBAction.clickedOk(CxRu nKBAction.java:637)
at
com.selectica.mbeclipse.actions.CxRunKBAction.getDefGUIPrefs (CxRunKBAction.java:233)
at
com.selectica.mbeclipse.actions.CxRunKBAction.runInSameThrea d(CxRunKBAction.java:442)
at
com.selectica.mbeclipse.actions.CxRunKBAction.run(CxRunKBAct ion.java:173)
at
com.selectica.mbeclipse.actions.CxRunKBAction.run(CxRunKBAct ion.java:148)
at
org.eclipse.ui.internal.PluginAction.runWithEvent(PluginActi on.java:246)
at
org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPl uginAction.java:223)
at
org.eclipse.jface.action.ActionContributionItem.handleWidget Selection(ActionContributionItem.java:538)
at
org.eclipse.jface.action.ActionContributionItem.access$2(Act ionContributionItem.java:488)
at
org.eclipse.jface.action.ActionContributionItem$6.handleEven t(ActionContributionItem.java:441)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java (Compiled
Code))
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2713)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplicatio n.java:103)
at
org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:226)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:376)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:85)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:58)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)
Thanks,
Ashish.Naidu
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