idea maven路径总是自己改成默认的路径C:\Users\Ad\.m2\repository
老版本修改方式:File–>OtherSettings–>Defaultsetting…–>Build,Execution,Deployment–>BuildTools–>Maven–>usersettingsfile:选择自己的Maven的路径即可。新版本修改方式:File–>NewProjectSettings->SettingsForNewProject->Build,Execution,D