十二月 06, 2019 7:19:08 下午 org.apache.catalina.startup.Catalina stop
严重: Catalina.stop
org.apache.catalina.LifecycleException: Failed to stop component [StandardServer[8005]]
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:233)
    at org.apache.catalina.startup.Catalina.stop(Catalina.java:766)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:728)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428)
Caused by: org.apache.catalina.LifecycleException: Failed to stop component [StandardService[Catalina]]
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:233)
    at org.apache.catalina.core.StandardServer.stopInternal(StandardServer.java:779)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:221)
    ... 8 more
Caused by: org.apache.catalina.LifecycleException: Failed to stop component [StandardEngine[Catalina]]
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:233)
    at org.apache.catalina.core.StandardService.stopInternal(StandardService.java:503)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:221)
    ... 10 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during stop
    at org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:1182)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:221)
    ... 12 more
 

发现还有线程不能正常关闭，这是怎么回事呢？