eclipse - Eclipse 启动时出错，现在我的包资源管理器为空

Question

我目前正在学习 Java，结合使用 Head First Java 书和 Eclipse。直到今晚一切都很顺利!

当我今晚启动 Eclipse 时，我看到了一条我没有注意的错误消息(我知道!我知道!)，并确认之后项目资源管理器是空的，它曾经包含我的 Head First 项目!

快速“谷歌”后，我找到了workspace.metadata.log，错误如下所示。

我使用的Eclipse版本是:20100218-1602，我使用的唯一插件是egit。

任何帮助将不胜感激。

!SESSION 2010-06-08 19:24:33.841 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.5.0_22
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_GB
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product

!ENTRY org.eclipse.ui.workbench 4 2 2010-06-08 19:24:36.475
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 1
org.eclipse.ui.WorkbenchException: Content is not allowed in prolog.
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:121)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:64)
    at org.eclipse.ui.internal.Workbench$49.run(Workbench.java:1895)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1890)
    at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183)
    at org.eclipse.ui.application.WorkbenchAdvisor$1.run(WorkbenchAdvisor.java:781)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:94)
    ... 6 more
!SUBENTRY 1 org.eclipse.ui 4 0 2010-06-08 19:24:36.475
!MESSAGE Content is not allowed in prolog.
!STACK 0
org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:94)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:64)
    at org.eclipse.ui.internal.Workbench$49.run(Workbench.java:1895)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1890)
    at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183)
    at org.eclipse.ui.application.WorkbenchAdvisor$1.run(WorkbenchAdvisor.java:781)
!SUBENTRY 1 org.eclipse.ui 4 0 2010-06-08 19:24:36.475
!MESSAGE Content is not allowed in prolog.
!STACK 0
org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:94)
    at org.eclipse.ui.XMLMemento.createReadRoot(XMLMemento.java:64)
    at org.eclipse.ui.internal.Workbench$49.run(Workbench.java:1895)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1890)
    at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183)
    at org.eclipse.ui.application.WorkbenchAdvisor$1.run(WorkbenchAdvisor.java:781)

!ENTRY org.eclipse.jdt.ui 4 10001 2010-06-08 19:24:41.442
!MESSAGE Internal Error
!STACK 1
org.eclipse.jdt.internal.ui.JavaUIException: Problems reading information from XML 'OpenTypeHistory.xml'
    at org.eclipse.jdt.internal.corext.util.History.createException(History.java:70)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:257)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:166)
    at org.eclipse.jdt.internal.corext.util.OpenTypeHistory.<init>(OpenTypeHistory.java:199)
    at org.eclipse.jdt.internal.corext.util.OpenTypeHistory.getInstance(OpenTypeHistory.java:185)
    at org.eclipse.jdt.internal.ui.JavaPlugin.initializeAfterLoad(JavaPlugin.java:381)
    at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:36)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:255)
    ... 6 more
!SUBENTRY 1 org.eclipse.jdt.ui 4 4 2010-06-08 19:24:41.442
!MESSAGE Problems reading information from XML 'OpenTypeHistory.xml'
!STACK 0
org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:255)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:166)
    at org.eclipse.jdt.internal.corext.util.OpenTypeHistory.<init>(OpenTypeHistory.java:199)
    at org.eclipse.jdt.internal.corext.util.OpenTypeHistory.getInstance(OpenTypeHistory.java:185)
    at org.eclipse.jdt.internal.ui.JavaPlugin.initializeAfterLoad(JavaPlugin.java:381)
    at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:36)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

!ENTRY org.eclipse.jdt.ui 4 10001 2010-06-08 19:24:50.435
!MESSAGE Internal Error
!STACK 1
org.eclipse.jdt.internal.ui.JavaUIException: Problems reading information from XML 'QualifiedTypeNameHistory.xml'
    at org.eclipse.jdt.internal.corext.util.History.createException(History.java:70)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:257)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:166)
    at org.eclipse.jdt.internal.corext.util.QualifiedTypeNameHistory.<init>(QualifiedTypeNameHistory.java:33)
    at org.eclipse.jdt.internal.corext.util.QualifiedTypeNameHistory.getDefault(QualifiedTypeNameHistory.java:26)
    at org.eclipse.jdt.internal.ui.JavaPlugin.stop(JavaPlugin.java:602)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:843)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:836)
    at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:474)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:546)
    at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1098)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:593)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:261)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:216)
    at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:266)
    at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:685)
    at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:583)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:409)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
    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:592)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:255)
    ... 25 more
!SUBENTRY 1 org.eclipse.jdt.ui 4 4 2010-06-08 19:24:50.435
!MESSAGE Problems reading information from XML 'QualifiedTypeNameHistory.xml'
!STACK 0
org.xml.sax.SAXParseException: Content is not allowed in prolog.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:255)
    at org.eclipse.jdt.internal.corext.util.History.load(History.java:166)
    at org.eclipse.jdt.internal.corext.util.QualifiedTypeNameHistory.<init>(QualifiedTypeNameHistory.java:33)
    at org.eclipse.jdt.internal.corext.util.QualifiedTypeNameHistory.getDefault(QualifiedTypeNameHistory.java:26)
    at org.eclipse.jdt.internal.ui.JavaPlugin.stop(JavaPlugin.java:602)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:843)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:836)
    at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:474)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:546)
    at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1098)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:593)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:261)
    at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:216)
    at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:266)
    at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:685)
    at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:583)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:409)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
    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:592)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

Answer 1

上次你是否正确关闭了eclipse？我将继续创建一个新的工作区，然后将我的项目文件导入其中。最好把时间花在学习上，而不是找出 Eclipse 出了什么问题:-)