一、环境设置
1、Settings--Build,Execution,Deployment--Maven
2、Settings--Build,Execution,Deployment--Compiler--Java Compiler
3、Project Settings--Project
4、Project Settings--Modules
①Sources--Language level
②Dependencies--Module SDK
标签：Settings,--,改查,idea,Project,Build,增删 From： https://www.cnblogs.com/wyy-25/p/17069235.html