A child container failed during start
微wx笑
2020-04-08【编程语言】
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java
启动Java Web项目时提示错误：A child container failed during start提示：A child container failed during start 从来都不是问题的根本原因！完整错误信息如下：严重: A child c
启动Java Web项目时提示错误：A child container failed during start
提示：A child container failed during start 从来都不是问题的根本原因！
完整错误信息如下：
严重: A child container failed during startjava.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testcs_dn-admin-web]]at java.util.concurrent.FutureTask.report(Unknown Source)at java.util.concurrent.FutureTask.get(Unknown Source)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:799)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)at java.util.concurrent.FutureTask.run(Unknown Source)at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at java.lang.Thread.run(Unknown Source) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testcs_dn-admin-web]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) ... 6 more Caused by: java.lang.IllegalArgumentException: Servlet mapping specifies an unknown servlet name Actionat org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3275)at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3254)at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1430)at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1344)at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:876)at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:374)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5355)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 6 more 十二月 09, 2014 2:21:25 下午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during startjava.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]at java.util.concurrent.FutureTask.report(Unknown Source)at java.util.concurrent.FutureTask.get(Unknown Source)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:731)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.startup.Catalina.start(Catalina.java:689)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)at java.lang.reflect.Method.invoke(Unknown Source)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:321)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:455) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)at java.util.concurrent.FutureTask.run(Unknown Source)at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at java.lang.Thread.run(Unknown Source) Caused by: org.apache.catalina.LifecycleException: A child container failed during startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:799)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 6 more 十二月 09, 2014 2:21:25 下午 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: Failed to start component [StandardServer[8006]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)at org.apache.catalina.startup.Catalina.start(Catalina.java:689)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)at java.lang.reflect.Method.invoke(Unknown Source)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:321)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:455) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:731)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 7 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 9 more Caused by: org.apache.catalina.LifecycleException: A child container failed during startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 11 more 十二月 09, 2014 2:21:25 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["http-bio-8081"] 十二月 09, 2014 2:21:25 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["ajp-bio-8010"] 十二月 09, 2014 2:21:25 下午 org.apache.catalina.core.StandardService stopInternal 信息: Stopping service Catalina 十二月 09, 2014 2:21:25 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["http-bio-8081"] 十二月 09, 2014 2:21:25 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["ajp-bio-8010"]
2018-01-06更新
提示：A child container failed during start 从来都不是问题的根本原因！
而本问题的根本原因是：Servlet mapping specifies an unknown servlet name Action
所以遇到此问题时，你需要往上找，看上面的提示信息。
例如下面的问题：
Caused by: java.lang.ClassNotFoundException: org.hibernate.Sessio
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原文链接：https://www.ivu4e.cn/blog/lang/2020-04-08/380.html
