Eclipse: Help cannot be displayed. [Solved]

[cerealito]

Hi there,
I'm having some trouble viewing the 'cheat sheets' help in Eclipse 3.0.1-r2:

Help cannot be displayed. The embedded application server could not run help web application. Check the log for details.

Log file says:

!ENTRY org.eclipse.help.ui 4 0 feb 14, 2005 10:42:06.933
!MESSAGE Help cannot be displayed. The embedded application server could not run help web application. Check the log for details.

Im using blackdown-jdk-1.4.2_rc1

I must say i'm absolutely clueless here, can any one help???

[psychomunky]

Try the sun or ibm-jdk's....I haven't ever had a problem with Eclipse if I've stuck to either of those. However, I can't say I've had problems with blackdown, because I've never used Eclipse with it.

Also, is there no stack trace in the log file?? Last I checked Eclipse usually includes a stack trace when it pukes. This would help tremendously with diagnosing the problem and providing you a solution.

[cerealito]

Thanks for your help....
i'm emerging ibm-jdk's now
in the mean while, i just did tail -f ~/workspace/.metadata/.log when the error ocurrs and i get:

Code: Select all

!STACK 0
org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.
Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:532)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:272)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:414)
        at org.apache.commons.digester.Digester.<init>(Digester.java:346)
        at org.apache.catalina.realm.MemoryRealm.getDigester(MemoryRealm.java:278)
        at org.apache.catalina.realm.MemoryRealm.start(MemoryRealm.java:348)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1173)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:363)
        at org.apache.catalina.startup.Embedded.addEngine(Embedded.java:464)
        at org.eclipse.tomcat.internal.TomcatAppServer.start(TomcatAppServer.java:97)
        at org.eclipse.help.internal.appserver.AppserverPlugin.startWebappServer(AppserverPlugin.java:145)
        at org.eclipse.help.internal.appserver.AppserverPlugin.getAppServer(AppserverPlugin.java:42)
        at org.eclipse.help.internal.appserver.WebappManager.start(WebappManager.java:57)
        at org.eclipse.help.internal.base.BaseHelpSystem.ensureWebappRunning(BaseHelpSystem.java:182)
        at org.eclipse.help.internal.base.HelpDisplay.displayHelpURL(HelpDisplay.java:156)
        at org.eclipse.help.internal.base.HelpDisplay.displayHelpResource(HelpDisplay.java:80)
        at org.eclipse.help.ui.internal.DefaultHelpUI.displayHelpResource(DefaultHelpUI.java:58)
        at org.eclipse.ui.help.WorkbenchHelp.displayHelpResource(WorkbenchHelp.java:267)
        at org.eclipse.ui.internal.cheatsheets.views.ViewItem.openHelpTopic(ViewItem.java:331)
        at org.eclipse.ui.internal.cheatsheets.views.ViewItem.access$100(ViewItem.java:28)
        at org.eclipse.ui.internal.cheatsheets.views.ViewItem$2.linkActivated(ViewItem.java:154)
        at org.eclipse.ui.forms.widgets.AbstractHyperlink.handleActivate(AbstractHyperlink.java:183)
        at org.eclipse.ui.forms.widgets.ImageHyperlink.handleActivate(ImageHyperlink.java:139)
        at org.eclipse.ui.forms.widgets.AbstractHyperlink.handleMouseUp(AbstractHyperlink.java:265)
        at org.eclipse.ui.forms.widgets.AbstractHyperlink.access$100(AbstractHyperlink.java:27)
        at org.eclipse.ui.forms.widgets.AbstractHyperlink$4.handleEvent(AbstractHyperlink.java:95)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:954)
        at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2595)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2298)
        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
        at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
        at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
        at org.eclipse.core.launcher.Main.run(Main.java:704)
        at org.eclipse.core.launcher.Main.main(Main.java:688)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:416)
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:525)
        ... 44 more
Caused by: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:412)
        ... 45 more

!ENTRY org.eclipse.help.ui 4 0 feb 14, 2005 12:33:02.67
!MESSAGE Help cannot be displayed.  The embedded application server could not run help web application.  Check the log for details.

The error, as i said is not CRITICAL but i can not see the help stuff, and i'm quite a newbie on eclipse, so it would really be useful for me!

[cerealito]

Ok ok, just for the record...
emerging IBM jdk solves the above problem with eclipse.

[psychomunky]

Hrm...it looks as though Blackdown hasn't fully implemented the Java 1.4 Logging API. I suspected as much. Last time I used Blackdown, there was Swing or AWT stuff still missing. It is good that there is an Opensource JDK available, however, it is a bit unfortunate that it doesn't appear to be entirely compatible. Glad the IBM-JDK fixed your problem though!!