嚴重: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8009"] java.lang.NullPoint

嚴重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/MyProject]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:945)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1410) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1400)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/MyProject]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
… 6 more
Caused by: java.lang.IllegalArgumentException: The servlets named [com.rimi.project.servlet.LogListServlet] and [com.rimi.project.servlet.UserLog] are both mapped to the url-pattern [/LogListServlet] which is not permitted
at org.apache.tomcat.util.descriptor.web.WebXml.addServletMappingDecoded(WebXml.java:317)
at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:310)
at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2374)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2056)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1941)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1935)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1935)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1935)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1935)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1146)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:773)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:307)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
… 6 more

三月 10, 2019 7:48:51 下午 org.apache.catalina.core.ContainerBase startInternal
嚴重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:945)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:789)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.startup.Catalina.start(Catalina.java:641)
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:349)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1410) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1400)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
… 6 more

三月 10, 2019 7:48:51 下午 org.apache.catalina.startup.Catalina start
嚴重: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.startup.Catalina.start(Catalina.java:641)
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:349)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:789)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
… 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
… 9 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
… 11 more

三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol pause
資訊: Pausing ProtocolHandler [“http-nio-8080”]
三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol pause
資訊: Pausing ProtocolHandler [“ajp-nio-8009”]
三月 10, 2019 7:48:51 下午 org.apache.catalina.core.StandardService stopInternal
資訊: Stopping service Catalina
三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol destroy
資訊: Destroying ProtocolHandler [“http-nio-8080”]
三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol destroy
嚴重: Failed to destroy end point associated with ProtocolHandler [“http-nio-8080”]
java.lang.NullPointerException
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:315)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:491)
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:896)
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:551)
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:879)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.startup.Catalina.start(Catalina.java:645)
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:349)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483)

三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol destroy
資訊: Destroying ProtocolHandler [“ajp-nio-8009”]
三月 10, 2019 7:48:51 下午 org.apache.coyote.AbstractProtocol destroy
嚴重: Failed to destroy end point associated with ProtocolHandler [“ajp-nio-8009”]
java.lang.NullPointerException
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:315)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:491)
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:896)
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:551)
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:879)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292)
at org.apache.catalina.startup.Catalina.start(Catalina.java:645)
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:349)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483)
錯誤原因之一就是兩個servlet的註解相同了，也就是說兩個servlet共用了一個註解，導致伺服器啟動不了。

最近做專案，做著做著，伺服器就啟動不了了，剛剛還好好的，好像有幾次這樣了，覺得還是把它記下來，下次好解決，也希望能夠幫助大家。