"Idea" idea can't open a project for a very strange reason

Because the project is stored on the Gitlab, so after the next, have encountered, thought to be re-downloaded after the master no content caused the normal opening, this situation, switch master and then open it;

But this is not the case with the problem,

Use

git branch-r View Remote branch

git checkout--track branchname switch to Branch

Idea Open, open many times still not, the phenomenon is to open a new download of the project, cannot open, and the old project can not compile, error, IDEA reported wrong:

Unable to import Maven project. See logs for details

Then go to the mother to find the log, search completely not, so for Google, you can view the log: Help->show log in finder, or directly terminal inside see:/users/zhang/library/logs/ Intellijidea15/idea.log

Then locate the following log:

2016-12-20 16:08:39,695 [112867] warn-ution.rmi.remoteprocesssupport-the Cook failed to start due to Java.net.Connect Exception:connection refused
2016-12-20 16:08:40,730 [113902] Error-llij.ide.plugins.pluginmanager-cannot reconnect.
Java.lang.RuntimeException:Cannot Reconnect.
At Org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform (remoteobjectwrapper.java:82)
At Org.jetbrains.idea.maven.server.MavenServerManager.applyProfiles (mavenservermanager.java:522)
At Org.jetbrains.idea.maven.project.MavenProjectReader.applyProfiles (mavenprojectreader.java:369)
At Org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel (mavenprojectreader.java:98)
At org.jetbrains.idea.maven.project.mavenprojectreader.access$300 (mavenprojectreader.java:42)
At Org.jetbrains.idea.maven.project.mavenprojectreader$1.doprocessparent (mavenprojectreader.java:422)
At Org.jetbrains.idea.maven.project.mavenprojectreader$1.doprocessparent (mavenprojectreader.java:399)
At Org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent ( mavenparentprojectfileprocessor.java:84)
At Org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process ( MAVENPARENTPROJECTFILEPROCESSOR.JAVA:62)
At Org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance (mavenprojectreader.java:425)
At Org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel (mavenprojectreader.java:95)
At org.jetbrains.idea.maven.project.mavenprojectreader.access$300 (mavenprojectreader.java:42)
At Org.jetbrains.idea.maven.project.mavenprojectreader$1.doprocessparent (mavenprojectreader.java:422)
At Org.jetbrains.idea.maven.project.mavenprojectreader$1.doprocessparent (mavenprojectreader.java:399)
At Org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent ( mavenparentprojectfileprocessor.java:84)
At Org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process ( MAVENPARENTPROJECTFILEPROCESSOR.JAVA:62)
At Org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance (mavenprojectreader.java:425)
At Org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel (mavenprojectreader.java:95)
At Org.jetbrains.idea.maven.project.MavenProjectReader.readProject (mavenprojectreader.java:53)
At Org.jetbrains.idea.maven.project.MavenProject.read (mavenproject.java:626)
At Org.jetbrains.idea.maven.wizards.MavenProjectBuilder.collectProfiles (mavenprojectbuilder.java:197)
At org.jetbrains.idea.maven.wizards.mavenprojectbuilder.access$900 (mavenprojectbuilder.java:47)
At Org.jetbrains.idea.maven.wizards.mavenprojectbuilder$1.run (mavenprojectbuilder.java:171)
At Org.jetbrains.idea.maven.utils.mavenutil$6.run (mavenutil.java:430)
At Com.intellij.openapi.progress.impl.coreprogressmanager$taskrunnable.run (coreprogressmanager.java:563)
At Com.intellij.openapi.progress.impl.coreprogressmanager$8.run (coreprogressmanager.java:357)
At Com.intellij.openapi.progress.impl.coreprogressmanager$2.run (coreprogressmanager.java:142)
At Com.intellij.openapi.progress.impl.coreprogressmanager.a (coreprogressmanager.java:446)
At Com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress (Coreprogressmanager.java : 392)
At Com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress (Progressmanagerimpl.java : 54)
At Com.intellij.openapi.progress.impl.CoreProgressManager.runProcess (coreprogressmanager.java:127)
At Com.intellij.openapi.application.impl.applicationimpl$14$1.run (applicationimpl.java:626)
At Com.intellij.openapi.application.impl.applicationimpl$8.run (applicationimpl.java:365)
At Java.util.concurrent.executors$runnableadapter.call (executors.java:511)
At Java.util.concurrent.FutureTask.run (futuretask.java:266)
At Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1142)
At Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:617)
At Java.lang.Thread.run (thread.java:745)
At Org.jetbrains.ide.pooledthreadexecutor$1$1.run (pooledthreadexecutor.java:55)
caused by:java.rmi.RemoteException:Cannot start MAVEN service; Nested exception is:
Java.rmi.ConnectException:Connection refused to host:localhost; Nested exception is:
Java.net.ConnectException:Connection refused
At Org.jetbrains.idea.maven.server.MavenServerManager.create (mavenservermanager.java:166)
At Org.jetbrains.idea.maven.server.MavenServerManager.create (mavenservermanager.java:71)
At Org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee (remoteobjectwrapper.java:41)
At Org.jetbrains.idea.maven.server.mavenservermanager$9.execute (mavenservermanager.java:525)
At Org.jetbrains.idea.maven.server.mavenservermanager$9.execute (mavenservermanager.java:522)
At Org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform (remoteobjectwrapper.java:76)
... More
caused By:java.rmi.ConnectException:Connection refused to host:localhost; Nested exception is:
Java.net.ConnectException:Connection refused
At Sun.rmi.transport.tcp.TCPEndpoint.newSocket (tcpendpoint.java:619)
At Sun.rmi.transport.tcp.TCPChannel.createConnection (tcpchannel.java:216)
At Sun.rmi.transport.tcp.TCPChannel.newConnection (tcpchannel.java:202)
At Sun.rmi.server.UnicastRef.newCall (unicastref.java:342)
At Sun.rmi.registry.RegistryImpl_Stub.lookup (Unknown Source)
At Com.intellij.execution.rmi.remoteprocesssupport$3.compute (remoteprocesssupport.java:256)
At Com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader (remoteutil.java:181)
At COM.INTELLIJ.EXECUTION.RMI.REMOTEPROCESSSUPPORT.A (remoteprocesssupport.java:252)
At Com.intellij.execution.rmi.RemoteProcessSupport.acquire (remoteprocesssupport.java:164)
At Org.jetbrains.idea.maven.server.MavenServerManager.create (mavenservermanager.java:163)
... More

That's the right direction, then search for the keyword (aused by:java.rmi.RemoteException:Cannot start maven service; nested exception is) to find the following information:

http://www.guudo.cn/tech/view/id/15947, the solution in this may be a bit of a use, but not all environments are the same, I do not uninstall, because the cost of unloading is more expensive

Http://stackoverflow.com/questions/12701347/unable-to-import-maven-project-into-intellij-idea, the final solution was obtained from here, or the foreign site description is clear

Workaround:

Add a line 127.0.0.1 localhost in/etc/hosts and re-import to resolve

Additional Reference Links:

Http://stackoverflow.com/questions/26754344/intellij-cannot-start-maven-service-executionexception

Http://stackoverflow.com/questions/30569909/unable-to-import-maven-project-in-intellij14

https://my.oschina.net/matt0614/blog/749724

Also find a fun, add color to idea Terminal:

Http://www.hankcs.com/program/java/log4j-2-console-color-configuration-with-intellij-idea.html

Add a color to terminal, too:

Https://github.com/altercation/solarized

Https://github.com/mbadolato/iTerm2-Color-Schemes

https://laoshuterry.gitbooks.io/mac_os_setup_guide/content/4_ZshConfig.html Configuration Tutorial

"Idea" idea can't open a project for a very strange reason