解决Eclipse启动报错，An error has occurred. see the log file

解决Eclipse启动报错，An error has occurred. see the log file

我之前使用的jdk版本是jdk-8，今天换了jdk-9以后，启动eclipse时提示 An error has occurrend. see the log file错误。
打开Eclipse的日志文件（我的在这里E:\java.metadata\log）
打开后发现出现了如下错误：

!ENTRY org.eclipse.e4.ui.workbench 4 0 2019-07-19 19:22:59.406
!MESSAGE FrameworkEvent ERROR
!STACK 0
java.lang.NoClassDefFoundError: javax/annotation/PreDestroy
	at org.eclipse.e4.core.internal.di.InjectorImpl.disposed(InjectorImpl.java:426)
	at org.eclipse.e4.core.internal.di.Requestor.disposed(Requestor.java:154)
	at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:78)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:111)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.handleInvalid(TrackableComputationExt.java:74)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.dispose(EclipseContext.java:176)
	at org.eclipse.e4.core.internal.contexts.osgi.EclipseContextOSGi.dispose(EclipseContextOSGi.java:106)
	at org.eclipse.e4.core.internal.contexts.osgi.EclipseContextOSGi.bundleChanged(EclipseContextOSGi.java:139)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:903)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:213)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:120)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:112)
	at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:156)
	at org.eclipse.osgi.container.Module.publishEvent(Module.java:476)
	at org.eclipse.osgi.container.Module.doStop(Module.java:634)
	at org.eclipse.osgi.container.Module.stop(Module.java:498)
	at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:191)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:165)
	at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.lang.ClassNotFoundException: javax.annotation.PreDestroy cannot be found by org.eclipse.e4.core.di_1.6.0.v20160319-0612
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:398)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:361)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:353)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
	... 21 more

这个错误是安装了Java 9环境后导致的，即使卸载了Java 9，回退到Java 8，仍然有这个问题。

要解决这个问题并不难，找到Eclipse.exe所在的目录，然后找到eclipse.ini文件
编辑这个文件，在末尾加上一句：

--add-modules=ALL-SYSTEM

保存，重新重启eclipse就可以正常启动了。