问题解决：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext
关于Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/06_servlet]]报错，浏览器页面不能启动问题
报错信息：
29-Jun-2020 10:13:01.772 严重 [RMI TCP Connection(2)-127.0.0.1] org.apache.tomcat.util.modeler.BaseModelMBean.invoke Exception invoking method manageApp
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/06_servlet]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:757)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:729)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1730)
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:484)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:433)
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
at javax.management.remote.rmi.RMIConnectionImpl.access 300 ( R M I C o n n e c t i o n I m p l . j a v a : 76 ) a t j a v a x . m a n a g e m e n t . r e m o t e . r m i . R M I C o n n e c t i o n I m p l 300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl 300(RMIConnectionImpl.java:76)atjavax.management.remote.rmi.RMIConnectionImplPrivilegedOperation.run(RMIConnectionImpl.java:1309)
at java.security.AccessController.doPrivileged(Native Method)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
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 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport 1. r u n ( T r a n s p o r t . j a v a : 197 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . T r a n s p o r t . s e r v i c e C a l l ( T r a n s p o r t . j a v a : 196 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t . h a n d l e M e s s a g e s ( T C P T r a n s p o r t . j a v a : 573 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport 1.run(Transport.java:197)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.Transport.serviceCall(Transport.java:196)atsun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run0(TCPTransport.java:834)
at sun.rmi.transport.tcp.TCPTransport C o n n e c t i o n H a n d l e r . l a m b d a ConnectionHandler.lambda ConnectionHandler.lambdarun 0 ( T C P T r a n s p o r t . j a v a : 688 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport 0(TCPTransport.java:688)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run(TCPTransport.java:687)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
29-Jun-2020 10:13:01.773 严重 [RMI TCP Connection(2)-127.0.0.1] org.apache.tomcat.util.modeler.BaseModelMBean.invoke Exception invoking method createStandardContext
javax.management.RuntimeOperationsException: Exception invoking method manageApp
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:308)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:484)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:433)
[2020-06-29 10:13:01,805] Artifact 06_servlet:war exploded: Error during artifact deployment. See server log for details.
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
at javax.management.remote.rmi.RMIConnectionImpl.access 300 ( R M I C o n n e c t i o n I m p l . j a v a : 76 ) a t j a v a x . m a n a g e m e n t . r e m o t e . r m i . R M I C o n n e c t i o n I m p l 300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl 300(RMIConnectionImpl.java:76)atjavax.management.remote.rmi.RMIConnectionImplPrivilegedOperation.run(RMIConnectionImpl.java:1309)
at java.security.AccessController.doPrivileged(Native Method)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
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 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport 1. r u n ( T r a n s p o r t . j a v a : 197 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . T r a n s p o r t . s e r v i c e C a l l ( T r a n s p o r t . j a v a : 196 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t . h a n d l e M e s s a g e s ( T C P T r a n s p o r t . j a v a : 573 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport 1.run(Transport.java:197)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.Transport.serviceCall(Transport.java:196)atsun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run0(TCPTransport.java:834)
at sun.rmi.transport.tcp.TCPTransport C o n n e c t i o n H a n d l e r . l a m b d a ConnectionHandler.lambda ConnectionHandler.lambdarun 0 ( T C P T r a n s p o r t . j a v a : 688 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport 0(TCPTransport.java:688)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run(TCPTransport.java:687)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/06_servlet]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:757)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:729)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1730)
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
… 35 more
29-Jun-2020 10:13:11.191 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory E:\tomcat\apache-tomcat-8.0.50\webapps\manager
29-Jun-2020 10:13:11.328 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory E:\tomcat\apache-tomcat-8.0.50\webapps\manager has finished in 136 ms
解决办法：
一般是web.xml配置问题，这个只要好好检查一下代码就可以解决。
![问题解决：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext_第1张图片](http://img.e-com-net.com/image/info8/def0d723d0174f649e999d4ac17b5904.jpg)
这里通过检查后发现配置中 hello前面缺少 “/”,添加上即可。
![问题解决：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext_第2张图片](http://img.e-com-net.com/image/info8/fefecd89c35a41de985cdb6e96d98af1.png)
![问题解决：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext_第3张图片](http://img.e-com-net.com/image/info8/edd1acc9fd9141fdb1602f8f99a1e176.jpg)
添加“/”后，启动成功，浏览器页面可以自动打开了。