问题可能是由 Maven集成中的已知错误影响2017.2版本。此错误已在 2017.2.1版本中修复。

The problem may be caused by a known bug in Maven integration which affects 2017.2 version. This bug is fixed in 2017.2.1 version.

您可以通过搜索 idea.log ：

You can find out if it's the case of your problem by searching idea.log for:

java.lang.AbstractMethodError: org.jetbrains.idea.maven.server.embedder.CustomModelValidator$ProxyModelProblemCollector.add(Lorg/apache/maven/model/building/ModelProblemCollectorRequest;)V