eclipse 尝试通过 ResourcesPlugin 获取工作区时出现“工作区已关闭”异常

"Workspace is closed" exception when trying to get the workspace through ResourcesPlugin

提问by Jenny Smith

I get this error when trying to get the workspace through ResourcesPlugin:

尝试通过 ResourcesPlugin 获取工作区时出现此错误：

java.lang.IllegalStateException: Workspace is closed.
at org.eclipse.core.resources.ResourcesPlugin.getWorkspace(ResourcesPlugin.java:339)

The code generating this is:

生成这个的代码是：

IWorkspace ws = ResourcesPlugin.getWorkspace();

Can you please help with this problem?

你能帮忙解决这个问题吗？

回答by VonC

Does your Manifest.MFcontain the org.eclipse.core.resourcesin the Require-bundlesection ?

您的部分中是否Manifest.MF包含？org.eclipse.core.resourcesRequire-bundle

And do you launch your test as a plugin ? (not as a 'Java Application')

您是否将测试作为插件启动？（不是“Java 应用程序”）

See also this thread.

另请参阅此线程。

As mentioned in the "Resources and the file system" help page,

如“资源和文件系统”帮助页面所述，

You can access the workspace from the resources plug-in class (defined in org.eclipse.core.resources).

When the resources plug-in is not running, the workspace exists solely in the file system and is viewed or manipulated by the user via standard file-based tools. Let's look at what a workspace looks like on disk as we explain the resources plug-in API.

您可以从资源插件类（在 中定义org.eclipse.core.resources）访问工作区。

当资源插件未运行时，工作区仅存在于文件系统中，并且由用户通过标准的基于文件的工具查看或操作。在解释资源插件 API 时，让我们看看磁盘上的工作区是什么样子。

---

---

From this book:

从这本书：

The workspace directory, regardless of the name defined with the -datainvocation option, has two roles:

• it acts as the parent for the .metadatadirectory
• and as the default location for projects

the workspace can contains projects only when:

• the org.eclipse.core.resourcesplugin is included in the configuration and
• and appropriately started from the workbench

this is automatic from an IDE configuration based on the org.eclipse.ui.ide.workbenchapplication.

工作区目录，无论用-data调用选项定义的名称如何，都有两个角色：

• 它充当.metadata目录的父级
• 并作为项目的默认位置

只有在以下情况下，工作区才能包含项目：

• 该org.eclipse.core.resources插件包含在配置中，并且
• 并从工作台适当地开始

这是从基于org.eclipse.ui.ide.workbench应用程序的 IDE 配置自动完成的。

See also this threadand remember that:

另请参阅此线程并记住：

the workspace is a different workspace from the runtime-workspace that's used for testing plugins. When you do Run on an Eclipse PDE environment, it creates a new workspace which is completely empty.

工作区与用于测试插件的运行时工作区是不同的工作区。当您在 Eclipse PDE 环境中运行时，它会创建一个完全空的新工作区。

The testing workspace root can be specified through the "-data"launching option.

可以通过“-data”启动选项指定测试工作区根。

If you want to access a file, your best bet is to include it in the plugin itself, and then use getClass().getResourceAsStream("/myfile.txt")to get an InputStreamthat you can read the contents for.

如果您想访问一个文件，最好的办法是将它包含在插件本身中，然后使用getClass().getResourceAsStream("/myfile.txt")获取一个InputStream您可以读取其内容的文件。

回答by Chris Dennett

Try calling Plugin.getStateLocation()in the plugin, it should cause the workspace to be created for you. Without this, you can't save any preferences either. http://dev.eclipse.org/newslists/news.eclipse.platform/msg45020.html

尝试调用Plugin.getStateLocation()插件，它应该会为您创建工作区。没有这个，您也无法保存任何首选项。http://dev.eclipse.org/newslists/news.eclipse.platform/msg45020.html

http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/org/eclipse/core/runtime/Plugin.html#getStateLocation%28%29

http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/org/eclipse/core/runtime/Plugin.html#getStateLocation%28%29

Err, sorry -- I just completed necroed this question by accident :)

呃，对不起 - 我刚刚完成了这个问题 :)