Java 项目启动tomcat的时候报tomcat异常

详细问题如下：

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[/exercise06]]

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:188)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1119)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/exercise06]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

... 6 more

Caused by: java.lang.IllegalArgumentException: Invalid login in servlet mapping

at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3429)

at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3404)

at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1438)

at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1359)

at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:888)

at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:388)

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:5522)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

... 6 more

八月 15, 2017 8:06:46 上午 org.apache.catalina.core.ContainerBase startInternal

严重: 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:188)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1119)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.startup.Catalina.start(Catalina.java:694)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

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 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:1571)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.apache.catalina.LifecycleException: A child container failed during start

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1127)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

... 6 more

八月 15, 2017 8:06:46 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: 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:694)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

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 start component [StandardService[Catalina]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758)

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:444)

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:1127)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

... 11 more

经发现是删除web.xml 的一些spring 配置文件信息，就可以了

但是后面运行的时候还是不可以，也不是serviceimpl页面的问题，

最终找到了是servlet 的 @webservlet 的 参数 value 没有写 /