【Eclipse】Eclipse非正常关闭，重新打开Maven报错/eclipse突然挂掉然后 maven 无法使用

错误信息：
Errors occurred during the build.
Error instantiating builder ‘org.eclipse.m2e.core.maven2Builder’.
Plug-in org.eclipse.m2e.core was unable to load class org.eclipse.m2e.core.internal.builder.MavenBuilder.
An error occurred while automatically activating bundle org.eclipse.m2e.core (524).
Plug-in org.eclipse.m2e.core was unable to load class org.eclipse.m2e.core.internal.builder.MavenBuilder.
An error occurred while automatically activating bundle org.eclipse.m2e.core (524).

解决方案：
google、百度之后的解决方案就是使用其他workspace的\.metadata\.plugins\org.eclipse.e4.workbench\workbench.xmi文件进行替换，第一次替换失败，再次替换成功了。