Hi all,
Currently, I'm developing an Eclipse plugin which calls API in neo4j. There is
no compiler error when writing the code.However, when I try to run the plugin,
the following errors always come up:
java.lang.ClassNotFoundException: org.neo4j.graphdb.Node at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250) at
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) at
java.lang.Class.forName0(Native Method) at
java.lang.Class.forName(Class.java:169) at
neo4jplugin.actions.SampleAction.run(SampleAction.java:33) at
org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251) at
org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)
at
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributi
onItem.access$2(ActionContributionItem.java:501) at
org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3776) at
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1367) at
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1390) at
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at
org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1187) at
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3622) at
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3277) at
org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629) at
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) at
org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at
org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at
org.eclipse.core.databinding.observable.Realm.
runWithDefault(Realm.java:332) at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) at
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:597) at
org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at
org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at
org.eclipse.equinox.launcher.Main.run(Main.java:1407) at
org.eclipse.equinox.launcher.Main.main(Main.java:1383)
I got this error when I simply wrote the following code SampleAction of an
Eclipse plugin: try {
Class.forName("org.neo4j.graphdb.Node"); } catch
(ClassNotFoundException e) { // TODO Auto-generated catch
block e.printStackTrace(); }
The errors do not exist when I invoke the APIs from a simple Java application
instead of Eclipse plugin.
Besides, for the Eclipse plugin, I have already add
neo4j-graph-matching-0.8-20100326.104823-10.jar to MANIFEST.MF file, like this:
Manifest-Version: 1.0Bundle-ManifestVersion: 2Bundle-Name:
Neo4JPluginBundle-SymbolicName: Neo4JPlugin; singleton:=trueBundle-Version:
1.0.0.qualifierBundle-Activator: neo4jplugin.ActivatorRequire-Bundle:
org.eclipse.ui, org.eclipse.core.runtimeBundle-ActivationPolicy:
lazyBundle-RequiredExecutionEnvironment: JavaSE-1.6Bundle-ClassPath: .,
neo4j-graph-matching-0.8-20100326.104823-10.jar
Please help me figure out what is wrong.
Thank you very much!Na Meng
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