Question

RCP编程提示找不到类 jxl/write/WritableCell，可是有这个类。而且在其他项目里运行可以加载这个类

!SESSION 2013-10-09 20:52:38.407 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_37
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
Framework arguments: -application Books.application
Command-line arguments: -application Books.application -data I:\复习java/../runtime-Books.application -dev file:I:/复习java/.metadata/.plugins/org.eclipse.pde.core/Books.application/dev.properties -os win32 -ws win32 -arch x86 -consoleLog

!ENTRY org.eclipse.ui 4 0 2013-10-09 20:52:46.907
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NoClassDefFoundError:
at excelTest.OracleToXLS.OTX(OracleToXLS.java:20)
at view.Welcome$3.mouseDoubleClick(Welcome.java:131)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:189)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at books.Application.start(Application.java:36)
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)

Caused by: java.lang.ClassNotFoundException: jxl.write.WritableCell
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(Unknown Source)
... 28 more

项目里面有这个类

Answer 1

确认下build文件、导出包 以及 插件引用jar包中的导出勾是不是勾上