Tomcat部署項目時出錯java.lang.IllegalStateException: ContainerBase.addChild: start:org.apache.catalina.LifecycleException: Failed to start component[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/項目名]]
一個非常easy的項目。沒有出現編譯錯誤，從Eclipse中用Tomcat v7.0 server啟動出現下面錯誤，貌似不是項目本身的問題（如由於庫沒有導入）。
六月 10, 2015 2:02:50 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: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:739)
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 start
at 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
六月 10, 2015 2:02:50 下午 org.apache.coyote.AbstractProtocol pause
信息: Pausing ProtocolHandler [“http-bio-8080”]
六月 10, 2015 2:02:50 下午 org.apache.coyote.AbstractProtocol pause
信息: Pausing ProtocolHandler [“ajp-bio-8009”]
六月 10, 2015 2:02:50 下午 org.apache.catalina.core.StandardService stopInternal
信息: Stopping service Catalina
六月 10, 2015 2:02:50 下午 org.apache.coyote.AbstractProtocol destroy
信息: Destroying ProtocolHandler [“http-bio-8080”]
六月 10, 2015 2:02:50 下午 org.apache.coyote.AbstractProtocol destroy
信息: Destroying ProtocolHandler [“ajp-bio-8009”]
把項目部署到tomcat文件夾下，用命令行啟動。報下面錯誤。
所以能夠肯定得是是Tomcat容器在載入我們servlet的時候出現的問題。所以重點檢查web.xml文件是否有問題：servlet是否都定義了，mapping映射是否定義正確….最后發現問題的本源在於servlet-name上下沒有相應
