我正在尝试创建自定义类路径条目，如提及here。我已经按照链接中提到的那样做了，并且还引用了JUnit和M2E的源代码。但是，当我选择新的自定义库并单击下一步时，我收到以下错误
java.lang.IllegalAccessException: Class org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI can not access a member of class com.company.eclipse.buildpath.CustomClasspathContainerPage with modifiers "protected"
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.Class.newInstance(Class.java:436)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.jdt.internal.ui.util.CoreUtility$1.run(CoreUtility.java:101)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jdt.internal.ui.util.CoreUtility.createExtension(CoreUtility.java:98)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerDescriptor.createPage(ClasspathContainerDescriptor.java:64)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.getContainerPage(ClasspathContainerWizard.java:142)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.getNextPage(ClasspathContainerWizard.java:172)
at org.eclipse.jface.wizard.WizardPage.getNextPage(WizardPage.java:166)
at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:878)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:425)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.openWizard(ClasspathContainerWizard.java:230)
at org.eclipse.jdt.ui.wizards.BuildPathDialogAccess.chooseContainerEntries(BuildPathDialogAccess.java:334)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.openContainerSelectionDialog(LibrariesWorkbookPage.java:892)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.libaryPageCustomButtonPressed(LibrariesWorkbookPage.java:266)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.access$0(LibrariesWorkbookPage.java:253)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage$LibrariesAdapter.customButtonPressed(LibrariesWorkbookPage.java:202)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.buttonPressed(TreeListDialogField.java:171)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.doButtonSelected(TreeListDialogField.java:400)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.access$2(TreeListDialogField.java:396)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField$2.widgetSelected(TreeListDialogField.java:361)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:157)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
以下是CustomClasspathContainerPage
的内容public class CustomClasspathContainerPage extends NewElementWizardPage implements IClasspathContainerPage, IClasspathContainerPageExtension {
private IClasspathEntry containerEntry;
IJavaProject javaProject;
protected CustomClasspathContainerPage() {
super("CustomContainerPage");
setTitle("Add custom library");
}
@Override
public void initialize(IJavaProject javaProject, IClasspathEntry[] currentEntries) {
this.javaProject = javaProject;
}
@Override
public void createControl(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
container.setLayout((Layout) layout);
new Label(container, 0).setText("This will set the Custom library to this project.");
this.setControl((Control) container);
}
@Override
public boolean finish() {
if (containerEntry == null) {
containerEntry = JavaCore.newContainerEntry(Core.CONTAINER_PATH);
}
return true;
}
@Override
public IClasspathEntry getSelection() {
return containerEntry;
}
@Override
public void setSelection(IClasspathEntry containerEntry) {
this.containerEntry = containerEntry;
}
}
答案 0 :(得分：0)
您的构造函数声明为protected，它必须是public：
public CustomClasspathContainerPage() {