Eclipse：应用程序无法启动

Question

我正在开发一个关于 Eclipse 的 java 项目。当我按Run As Eclipse Application 时，它曾经工作过。现在它突然停止工作了：

自上次工作以来我唯一做的就是卸载和安装不同的 java 和 jdk 版本。目前我在C:\Program Files\Java 中有这 3 个：

• jre7
• jre1.8.0_20
• jdk1.8.0_20

我不知道第二个是什么。我在"Programs and Features" 找不到。

在path 变量中我有：

C:\Program Files\Java\jre7\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v6.5\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v6.5\libnvvp;C:\Python27\Lib\site-packages\PyQt4;C:\Python27;C:\Python27\Scripts;C:\OpenSSH\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files\nodejs\;C:\Downloads\Android\adt-bundle-windows-x86_64-20140702\sdk\tools

这是我在错误消息上点击"Yes, in an editor" 时的一些日志：

!SESSION 2014-08-25 17:21:53.071 -----------------------------------------------
eclipse.buildId=M20090917-0800
java.version=1.7.0_67
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.sdk.ide
Command-line arguments:  -product org.eclipse.sdk.ide -data C:\Dropbox\University\Semester 5\Project\workspace/../runtime-EclipseApplication -dev file:C:/Dropbox/University/Semester 5/Project/workspace/.metadata/.plugins/org.eclipse.pde.core/Eclipse Application/dev.properties -os win32 -ws win32 -arch x86_64

This is a continuation of log file C:\Dropbox\University\Semester 5\Project\runtime-EclipseApplication\.metadata\.bak_0.log
Created Time: 2014-08-25 17:21:56.118

!ENTRY org.eclipse.osgi 4 0 2014-08-25 17:21:56.118
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:114)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
    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:368)
...
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (3814).
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:449)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:211)
    at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:381)
    at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:454)
...
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:806)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
...
Caused by: java.lang.StackOverflowError
    at java.util.HashMap.init(Unknown Source)
    at java.util.HashMap.<init>(Unknown Source)
    at java.util.HashMap.<init>(Unknown Source)
    at java.util.HashSet.<init>(Unknown Source)
    at org.eclipse.core.internal.resources.MarkerTypeDefinitionCache.computeSuperTypes(MarkerTypeDefinitionCache.java:88)
    at org.eclipse.core.internal.resources.MarkerTypeDefinitionCache.computeSuperTypes(MarkerTypeDefinitionCache.java:94)
...
!ENTRY org.eclipse.jdt.core 2 0 2014-08-28 10:19:14.693
!MESSAGE The Java indexing could not index C:/Program Files/Java/jre7/lib/ext/nashorn.jar|jdk/nashorn/internal/objects/NativeArray$Constructor.class. This .class file doesn't follow the class file format specification. Please report this issue against the .class file vendor
...

为什么会这样？

我应该发布更多信息以便识别问题吗？

编辑：

我在项目中发现如下警告：

The JRE container on the classpath is not a perfect match to the 'JavaSE-1.6' execution environment MANIFEST.MF /JDTCommentsV2/META-INF line 11 Plug-in Problem

对应MANIFEST.MF中的这一行：

Bundle-RequiredExecutionEnvironment: JavaSE-1.6

编辑：

我通过以下方式解决了这个问题：右键单击 -> 快速修复

但现在我又遇到了另一个错误：

Build path specifies execution environment JavaSE-1.6. There are no JREs installed in the workspace that are strictly compatible with this environment.

解决方案here和here建议在项目->属性->添加库->JRE系统库中选择Workspace default JRE。这带回了：

The JRE container on the classpath is not a perfect match to the 'JavaSE-1.6' execution environment MANIFEST.MF /JDTCommentsV2/META-INF line 11 Plug-in Problem

编辑：

我更改了workspace 的位置（将其放在桌面上），现在它可以工作了。但我需要原始路径（因为它是保管箱中的共享文件夹......）。有什么想法吗？

Answer 1

Bundle-RequiredExecutionEnviornment 属性表示需要 Java 1.6。 OSGi 文档暗示具有此属性的捆绑软件不一定支持更高版本的 Java，尽管我没有特别发现。错误消息指出需要 Java 1.6 环境才能运行此捆绑包（jar 文件等），而您的路径没有，只有 1.6 之后的环境。我会安装 1.6，删除其他的，确保类路径和为 eclipse 选择的 JRE/JDK 指向 1.6，刷新 eclipse 中的所有项目，然后重新启动你的机器。