java - : "Refreshing Process Information". java.lang.NullPointerException 期间发生内部错误

Question

每当我在 Eclipse Luna 中的 WebContent 下创建一个文件夹时，即使文件夹已创建，它也会弹出。

消息是:

Problem Occured

'Refreshing Process Information' has encountered a problem.

An internal error occurred during: "Refreshing Process Information".

An internal error occurred during: "Refreshing Process Information".
  java.lang.NullPointerException

为什么 java.lang.NullPointerException？

编辑:

附加错误日志:

这些是列出的问题:

(X) An internal error occurred during: "Refreshing Process Information".
(!) Warning: The environment variable HOME is not set. The following directory will be used to store the Git
(!) Warning: EGit couldn't detect the installation path "gitPrefix" of native Git. Hence EGit can't respect system level (X) Could not bind a reference of component Active Customer. The reference is: Reference[name = AnalyzationAndRenderService, interface = j...
(X) Could not bind a reference of component Active Customer. The reference is: Reference[name = AnalyzationAndRenderService, interface = j...
(!) [SCR] ComponentReference.bind(): bind method 'setAnalyzationAndRenderService' not found or it is not accessible!
(!) [SCR] Could not get the service object relevant to the reference. One possible reason is a circulation problem. Another possible reason is that Bu...
(X) FrameworkEvent ERROR
(X) Exception occurred while creating new instance of component Component[
(X) Exception occurred while creating new instance of component Component[

Answer 1

尝试删除 .metadata 文件夹并再次导入项目(为了安全起见，在其他地方复制您的项目文件夹。)

您在项目中使用 GIT 吗？