Tomcat无法启动报错：'Starting Tomcat v9.5 Server at localhost' has encountered a problem

左手的ㄟ右手 2022-04-02 03:21 233阅读 0赞

错误提示

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTY1MTg3_size_16_color_FFFFFF_t_70][]

控制台提示

严重: A child container failed during start
    java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Hello]]
    	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:949)
    	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    	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:350)
    	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Hello]]
    	at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    	... 21 more
    Caused by: java.lang.IllegalArgumentException: Servlet mapping specifies an unknown servlet name [HelloServletConfig]
    	at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3116)
    	at org.apache.catalina.Context.addServletMappingDecoded(Context.java:879)
    	at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1376)
    	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1187)
    	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:765)
    	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
    	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
    	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4989)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	... 27 more
    
    十二月 25, 2018 10:09:17 上午 org.apache.catalina.core.ContainerBase startInternal
    严重: A child container failed during start
    java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
    	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:949)
    	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    	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:350)
    	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
    Caused by: org.apache.catalina.LifecycleException: A child container failed during start
    	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    	... 13 more
    
    十二月 25, 2018 10:09:17 上午 org.apache.catalina.startup.Catalina start
    严重: The required Server component failed to start so Tomcat is unable to start.
    org.apache.catalina.LifecycleException: A child container failed during start
    	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    	at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    	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:350)
    	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
    
    十二月 25, 2018 10:09:17 上午 org.apache.coyote.AbstractProtocol pause
    信息: Pausing ProtocolHandler ["http-nio-8080"]
    十二月 25, 2018 10:09:17 上午 org.apache.coyote.AbstractProtocol pause
    信息: Pausing ProtocolHandler ["ajp-nio-8009"]
    十二月 25, 2018 10:09:17 上午 org.apache.catalina.core.StandardService stopInternal
    信息: Stopping service [Catalina]
    十二月 25, 2018 10:09:17 上午 org.apache.coyote.AbstractProtocol destroy
    信息: Destroying ProtocolHandler ["http-nio-8080"]
    十二月 25, 2018 10:09:17 上午 org.apache.coyote.AbstractProtocol destroy
    信息: Destroying ProtocolHandler ["ajp-nio-8009"]

网上找了一下有的说什么tomcat版本问题什么的，发现自己的不是这个问题，因为之前配置过web.xml,就想着是不是那里出现了问题，果然是！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTY1MTg3_size_16_color_FFFFFF_t_70 1][]

发现两个servlet-name配置的不一样，修改过后Tomcat可以正常启动了。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTY1MTg3_size_16_color_FFFFFF_t_70]: /images/20220402/4b4b95dce6364aa483b0cef9f1eb4bf7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTY1MTg3_size_16_color_FFFFFF_t_70 1]: /images/20220402/43b587241bb443e3803947d373cb083c.png