如何修复错误“更新Maven项目”。不支持的IClasspathEntry种类= 4？ [英] How to fix error "Updating Maven Project". Unsupported IClasspathEntry kind=4?

问题描述

我在STS中导入了maven项目，当我运行更新更新项目时，我收到：

 更新Maven项目。不支持的IClasspathEntry种类= 4 
  

有没有解决方法？

解决方案

这个问题已经在m2e 1.5.0中得到修复，可用于Eclipse Kepler（4.3）和Luna（4.4） >

请参阅 https：/ /bugs.eclipse.org/bugs/show_bug.cgi?id=374332#c14

问题是由STS（Spring IDE / Eclipse）以及Eclipse和其他基于Eclipse的IDE，使用m2e（clipse）插件，但是eclipse：eclipse可能已经在项目上运行了。当m2e遇到var.classpath条目时，会引发此错误。

更新网站在以下网址中指定：_
http://eclipse.org/m2e/m2e-downloads.html

如果您不能使用m2e 1.5.0由于任何原因，然后：

1. 禁用项目的maven属性（通过右键单击菜单）




2. 运行 mvn eclipse：clean （当你的项目是打开 STS /蚀）。根据时间的不同，您可能需要在重新启用maven性质之前，先对项目进行刷新或更新。你应该能够看到你的项目已经失去了它的Maven性质。 （ eclipse：clean 目标只是删除 .project ， .classpath 和 .settings / 文件/目录，您也可以删除这些文件（在项目打开时再次 ）而不是运行 mvn eclipse：clean 。）




3. 重新启用maven属性。
   
   （大多数情况下，可以在软件包资源管理器窗格中右键单击相关项目，然后选择配置 - >转换为Maven项目）。

I have imported maven project in STS, when I run update update project I receive:

"Updating Maven Project". Unsupported IClasspathEntry kind=4

Is there a workaround for this?

解决方案

This issue has been fixed in m2e 1.5.0 which is available for Eclipse Kepler (4.3) and Luna (4.4)

Please see https://bugs.eclipse.org/bugs/show_bug.cgi?id=374332#c14

The problem is caused by the fact that STS (the Spring IDE/Eclipse), as well Eclipse and other Eclipse based IDE's, use the m2e(clipse) plugin but that eclipse:eclipse has been probably been run on the project. When m2e encounters a "var" .classpath entry, it throws this error.

The update sites are specified at the following url:
http://eclipse.org/m2e/m2e-downloads.html

If you can't use m2e 1.5.0 for any reason, then :

1. Disable the maven nature for the project (via the right-click menu)

2. Run mvn eclipse:clean (while your project is open in STS/eclipse). Depending on the timing, you might need to do a refresh or two on the project before re-enabling the maven nature. You should be able to see that your project has lost it's Maven nature. (The eclipse:clean goal just deletes the .project, .classpath and .settings/ files/directories. You can also just remove those files (again while the project is open) instead of running mvn eclipse:clean.)

3. Re-enable the maven nature.
   (Most of the time, this can be done by right-clicking on the project in question in the package explorer pane, and then choosing 'Configure'-> 'Convert to Maven Project')

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