1、
问题：
突发断电导致idea的play项目错误，无法识别build.sbt,build.sbt文件报错，Cannot resolve symbol
解决方案：
For anyone having the same problem, start by trying the following in Idea:
File -> Invalidate Caches -> Invalidate and Restart
2、
问题：
idea自动导入设置
解决方案：
突发断电导致idea的play项目错误，无法识别build.sbt
原文：http://www.cnblogs.com/qiujinyong/p/5212425.html