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Eclipse - JUnit - 在“启动 MyMavenModule”期间发生内部错误。空指针异常

[英]Eclipse - JUnit - An internal error occurred during: “Launching MyMavenModule”. NullPointerException

原文 2020-06-20 15:45:33 4 2 java/ eclipse/ junit/ eclipse-2020-06

I recently upgraded to Eclipse 2020-06.我最近升级到 Eclipse 2020-06。 After the upgrade, I'm now unable to run Junit tests in Eclipse while they run smoothly in Maven.升级后，我现在无法在 Eclipse 中运行 Junit 测试，而它们在 Maven 中运行顺利。

Here is a screenshot of the error:这是错误的屏幕截图：

I tried to delete the .metadata folder (I made a backup before), start a fresh copy of eclipse and import my project in it and event start another fresh copy of eclipse and create a simple JUnit test in it.我尝试删除.metadata文件夹（我之前进行了备份），启动 eclipse 的新副本并将我的项目导入其中，然后事件启动 eclipse 的另一个新副本并在它中创建一个简单的 Z8965A291ED3E84870298E 测试。

All these attempts result in the same error.所有这些尝试都会导致相同的错误。

What am I doing wrong?我究竟做错了什么？

EDIT:编辑：

2 个解决方案

According to the screenshot you did not have Eclipse 2020-06 (4.16.0) , but a kind of beta/preview version which might be unstable :根据屏幕截图，您没有 Eclipse 2020-06 (4.16.0) ，而是一种可能不稳定的 beta/preview 版本：

eclipse.buildId=4.16.0.I20200604-0540 means integration build ( I ) of June 4, 2020 ( 20200604 ) at 5:40 ( 0540 ). eclipse.buildId=4.16.0.I20200604-0540表示 2020 年 6 月 4 日 ( 20200604 ) 5:40 ( 0540 ) 的集成构建 ( I )。 After this build and before the release there were a couple of integration builds and one release candidate.在此构建之后和发布之前，有几个集成构建和一个候选发布。 It was the second release candidate, one week later, which became the Eclipse 2020-06 release and which was released on June 17, 2020.这是一周后的第二个候选版本，它成为 Eclipse 2020-06 版本，并于 2020 年 6 月 17 日发布。

If you do not want to have an integration build, make sure that in Window > Preferences: Update/Install > Available Software Sites you don't have an update site with a URL that contains staging .如果您不想进行集成构建，请确保在Window > Preferences: Update/Install > Available Software Sites中没有包含staging的 URL 的更新站点。

I wasn't able to fix the problem.我无法解决问题。 I tried to install Java Development Tool but the installer failed with an OutOfMemoryException.我尝试安装 Java 开发工具，但安装程序失败并出现 OutOfMemoryException。

So I re -download Eclipse 2020-06 manually, I re -install all my plugins and re -import my projects.所以我手动重新下载 Eclipse 2020-06，重新安装所有插件并重新导入我的项目。

My guess is the ooomph installer messed around somehow during the upgrade from Eclipse 2020-03 to Eclipse 2020-06.我的猜测是 ooomph 安装程序在从 Eclipse 2020-03 升级到 Eclipse 2020-06 期间不知何故搞砸了。

I lost nearly a day to fix this !我花了将近一天的时间来解决这个问题！