使用IntelliJ IDEA新建Spring Initializr项目，新建好一直报错Unable to import maven project: See logs for details。具体报错信息如下：

2018-09-24 23:22:36,125 [ 290810]   WARN - ution.rmi.RemoteProcessSupport - java.rmi.NotBoundException: _DEAD_HAND_ 

2018-09-24 23:22:36,125 [ 290810]   WARN - ution.rmi.RemoteProcessSupport - at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:209) 

2018-09-24 23:22:36,125 [ 290810]   WARN - ution.rmi.RemoteProcessSupport - at com.intellij.execution.rmi.RemoteServer.start(RemoteServer.java:96) 

2018-09-24 23:22:36,125 [ 290810]   WARN - ution.rmi.RemoteProcessSupport - at org.jetbrains.idea.maven.server.RemoteMavenServer.main(RemoteMavenServer.java:22) 

2018-09-24 23:22:36,463 [ 291148]   WARN - ution.rmi.RemoteProcessSupport - The cook failed to start due to java.net.SocketException: Connection reset 

2018-09-24 23:22:37,468 [ 292153]  ERROR - plication.impl.ApplicationImpl - Cannot reconnect. 

java.lang.RuntimeException: Cannot reconnect.

at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:82)

at org.jetbrains.idea.maven.server.MavenIndexerWrapper.getArchetypes(MavenIndexerWrapper.java:148)

at org.jetbrains.idea.maven.indices.MavenIndicesManager.getArchetypes(MavenIndicesManager.java:324)

at org.jetbrains.idea.maven.wizards.MavenArchetypesStep.lambda$updateArchetypesList$3(MavenArchetypesStep.java:233)

at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:314)

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)

Caused by: java.rmi.RemoteException: Cannot start maven service; nested exception is: 

java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 

java.net.ConnectException: Connection refused: connect

at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:161)

at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:66)

at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)

at org.jetbrains.idea.maven.server.MavenServerManager$4.create(MavenServerManager.java:508)

at org.jetbrains.idea.maven.server.MavenServerManager$4.create(MavenServerManager.java:504)

at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)

at org.jetbrains.idea.maven.server.MavenIndexerWrapper.lambda$getArchetypes$6(MavenIndexerWrapper.java:148)

at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:76)

... 9 more

Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 

java.net.ConnectException: Connection refused: connect

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.lambda$acquire$2(RemoteProcessSupport.java:260)

at com.intellij.openapi.util.ClassLoaderUtil.runWithClassLoader(ClassLoaderUtil.java:66)

at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:231)

at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:258)

at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:164)

at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:158)

... 16 more

Caused by: java.net.ConnectException: Connection refused: connect

at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)

at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)

at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

at java.net.Socket.connect(Socket.java:589)

at java.net.Socket.connect(Socket.java:538)

at java.net.Socket.<init>(Socket.java:434)

at java.net.Socket.<init>(Socket.java:211)

at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)

at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:148)

at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)

... 26 more

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - IntelliJ IDEA 2018.2.4  Build #IU-182.4505.22 

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - JDK: 1.8.0_152-release 

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - VM: OpenJDK 64-Bit Server VM 

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - Vendor: JetBrains s.r.o 

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - OS: Windows 10 

2018-09-24 23:22:37,470 [ 292155]  ERROR - plication.impl.ApplicationImpl - Last Action: NewProject 

2018-09-24 23:23:01,279 [ 315964]   INFO -              #AgreementUpdater - Error updating privacy policy: Connection refused: connect 

尝试了各种办法：1、重装IDE;    2、修改网上说的hosts文件;   3、删除各种缓存文件   均无效，求各位大神指点，谢谢！