Tomcat 8 部署项目时 报错

Error log as below:

SEVERE: A child container failed during startjava.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]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:916)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)at java.util.concurrent.FutureTask.run(FutureTask.java:262)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)at java.lang.Thread.run(Thread.java:745)Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)... 6 moreCaused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:210)at org.apache.catalina.startup.ContextConfig.processJarsForWebFragments(ContextConfig.java:1872)at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1119)at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5066)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 6 more七月 11, 2015 9:40:22 下午 org.apache.catalina.core.ContainerBase startInternalSEVERE: A child container failed during startjava.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/WebSysAdmin]]at java.util.concurrent.FutureTask.report(FutureTask.java:122)at java.util.concurrent.FutureTask.get(FutureTask.java:188)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)at java.util.concurrent.FutureTask.run(FutureTask.java:262)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$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[/WebSysAdmin]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)... 6 moreCaused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:210)at org.apache.catalina.startup.ContextConfig.processJarsForWebFragments(ContextConfig.java:1872)at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1119)at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)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:5066)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 6 more七月 11, 2015 9:40:22 下午 org.apache.catalina.core.ContainerBase startInternalSEVERE: 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(FutureTask.java:122)at java.util.concurrent.FutureTask.get(FutureTask.java:188)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.startup.Catalina.start(Catalina.java:625)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:351)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)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$StartChild.call(ContainerBase.java:1408)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)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 startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 6 more七月 11, 2015 9:40:22 下午 org.apache.catalina.startup.Catalina startSEVERE: 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:625)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:351)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)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:769)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 7 moreCaused 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:439)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 9 moreCaused by: org.apache.catalina.LifecycleException: A child container failed during startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 11 more七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol pauseINFO: Pausing ProtocolHandler ["http-nio-8090"]七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol pauseINFO: Pausing ProtocolHandler ["ajp-nio-8010"]七月 11, 2015 9:40:22 下午 org.apache.catalina.core.StandardService stopInternalINFO: Stopping service Catalina七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol destroyINFO: Destroying ProtocolHandler ["http-nio-8090"]七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol destroySEVERE: Failed to destroy end point associated with ProtocolHandler ["http-nio-8090"]java.lang.NullPointerExceptionat org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:304)at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:480)at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:818)at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:532)at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:859)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.startup.Catalina.start(Catalina.java:629)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:351)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol destroyINFO: Destroying ProtocolHandler ["ajp-nio-8010"]七月 11, 2015 9:40:22 下午 org.apache.coyote.AbstractProtocol destroySEVERE: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8010"]java.lang.NullPointerExceptionat org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:304)at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:480)at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:818)at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:532)at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:859)at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)at org.apache.catalina.startup.Catalina.start(Catalina.java:629)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:351)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)

 Investigation:

Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;

 根据这条错误显示，猜测是java servlet不匹配issue.  联想到当前的eclipse用的是刚new的tomcat 8，可能是项目servlet-api.jar 同tomcat 8 不匹配。

 最终解决方法，删除项目工程lib文件夹的低版本的servlet-api.jar, tomcat 8的lib文件夹里用默认带的jar包

或者把tomcat换成7。