sun.misc.Unsafe.park(Native Method)

ribbon巨坑报错：
我在使用springcloud alibaba的nacos作为配置中心的时候，报错，死活获取不到nacos上的配置信息。一直报错sun.misc.Unsafe.park(Native Method)
完整错误信息如下====》

D:\Java\jdk\bin\java -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=64667 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\Java\IDEA\IntelliJ IDEA 2017.2.6\lib\idea_rt.jar=64668:D:\Java\IDEA\IntelliJ IDEA 2017.2.6\bin" -Dfile.encoding=UTF-8 -classpath 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ELEASE\spring-boot-2.2.2.RELEASE.jar;D:\Java\mavenRepository\org\springframework\boot\spring-boot-autoconfigure\2.2.2.RELEASE\spring-boot-autoconfigure-2.2.2.RELEASE.jar;D:\Java\mavenRepository\org\projectlombok\lombok\1.18.10\lombok-1.18.10.jar;D:\Java\mavenRepository\org\slf4j\slf4j-api\1.7.29\slf4j-api-1.7.29.jar;D:\Java\mavenRepository\org\springframework\spring-core\5.2.2.RELEASE\spring-core-5.2.2.RELEASE.jar;D:\Java\mavenRepository\org\springframework\spring-jcl\5.2.2.RELEASE\spring-jcl-5.2.2.RELEASE.jar com.AlibabaNacosConfigClient3377
2020-09-17 02:07:49.960  INFO 15708 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.2.RELEASE)

2020-09-17 02:07:51.568  INFO 15708 --- [  restartedMain] c.a.c.n.c.NacosPropertySourceBuilder     : Loading nacos data, dataId: 'nacos-config-client-dev.yaml', group: 'DEFAULT_GROUP'
2020-09-17 02:07:51.572  INFO 15708 --- [  restartedMain] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-nacos-config-client-dev.yaml'}, BootstrapPropertySource {name='bootstrapProperties-nacos-config-client.yaml'}]
2020-09-17 02:07:51.576  INFO 15708 --- [  restartedMain] com.AlibabaNacosConfigClient3377         : The following profiles are active: dev
2020-09-17 02:07:54.323  WARN 15708 --- [  restartedMain] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'nacos-config' contains invalid characters, please migrate to a valid format.
2020-09-17 02:07:54.326  WARN 15708 --- [  restartedMain] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'nacos-discovery' contains invalid characters, please migrate to a valid format.
2020-09-17 02:07:54.535  WARN 15708 --- [  restartedMain] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2020-09-17 02:07:54.594  INFO 15708 --- [  restartedMain] o.s.cloud.context.scope.GenericScope     : BeanFactory id=fccc2d35-20ed-3c5c-adea-c74ab5c54971
2020-09-17 02:07:55.114  INFO 15708 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 3377 (http)
2020-09-17 02:07:55.123  INFO 15708 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-09-17 02:07:55.124  INFO 15708 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.29]
2020-09-17 02:07:55.257  INFO 15708 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-09-17 02:07:55.257  INFO 15708 --- [  restartedMain] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3667 ms
2020-09-17 02:07:56.737  WARN 15708 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'ribbonServerList' defined in class path resource [com/alibaba/cloud/nacos/ribbon/NacosRibbonClientConfiguration.class]: Unsatisfied dependency expressed through method 'ribbonServerList' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.netflix.client.config.IClientConfig' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2020-09-17 02:07:56.740  INFO 15708 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2020-09-17 02:07:56.744  WARN 15708 --- [  restartedMain] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [com.alibaba.nacos.naming.client.listener] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 sun.misc.Unsafe.park(Native Method)
 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
 com.alibaba.nacos.client.naming.core.EventDispatcher$Notifier.run(EventDispatcher.java:114)
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 java.lang.Thread.run(Thread.java:748)
2020-09-17 02:07:56.744  WARN 15708 --- [  restartedMain] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [com.alibaba.nacos.naming.failover] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 sun.misc.Unsafe.park(Native Method)
 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 java.lang.Thread.run(Thread.java:748)
2020-09-17 02:07:56.745  WARN 15708 --- [  restartedMain] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [com.alibaba.nacos.naming.push.receiver] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.net.DualStackPlainDatagramSocketImpl.socketReceiveOrPeekData(Native Method)
 java.net.DualStackPlainDatagramSocketImpl.receive0(DualStackPlainDatagramSocketImpl.java:124)
 java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:143)
 java.net.DatagramSocket.receive(DatagramSocket.java:812)
 com.alibaba.nacos.client.naming.core.PushReceiver.run(PushReceiver.java:73)
 java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 java.util.concurrent.FutureTask.run(FutureTask.java:266)
 java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
 java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 java.lang.Thread.run(Thread.java:748)
2020-09-17 02:07:56.758  INFO 15708 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-09-17 02:07:56.923 ERROR 15708 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of method ribbonServerList in com.alibaba.cloud.nacos.ribbon.NacosRibbonClientConfiguration required a bean of type 'com.netflix.client.config.IClientConfig' that could not be found.


Action:

Consider defining a bean of type 'com.netflix.client.config.IClientConfig' in your configuration.


Process finished with exit code 0
.

解决办法：

springboot启动类放错位置了，应该放在 @RefreshScope注解上级包下，
正确的目录结构：

就可以解决问题，原因不详，求大佬指点。