配置python Struts2框架时启动tomcat报错,，struts2tomcat,web.xml<?xml

配置python Struts2框架时启动tomcat报错,，struts2tomcat,web.xml

web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://java.sun.com/xml/ns/j2ee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"    version="2.5">    <display-name>HelloWorld</display-name>        <filter>        <filter-name>struts2</filter-name>        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>struts2</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>        <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list></web-app>

严重: A child container failed during startjava.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/HelloWorld]]    at java.util.concurrent.FutureTask.report(FutureTask.java:122)    at java.util.concurrent.FutureTask.get(FutureTask.java:192)    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:266)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)    at java.lang.Thread.run(Thread.java:745)Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/HelloWorld]]    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)    ... 6 moreCaused by: java.lang.NoClassDefFoundError: Lorg/apache/logging/log4j/Logger;    at java.lang.Class.getDeclaredFields0(Native Method)    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)    at java.lang.Class.getDeclaredFields(Class.java:1916)    at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)    at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:270)    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationFilterAnnotations(WebAnnotationSet.java:109)    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:64)    at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:417)    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:891)    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 moreCaused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)    ... 20 more二月 06, 2017 6:55:42 下午 org.apache.catalina.startup.TldConfig execute信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.二月 06, 2017 6:55:42 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(FutureTask.java:122)    at java.util.concurrent.FutureTask.get(FutureTask.java:192)    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:693)    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.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$StartChild.call(ContainerBase.java:1561)    at java.util.concurrent.FutureTask.run(FutureTask.java:266)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)    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二月 06, 2017 6:55:42 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[8005]]    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)    at org.apache.catalina.startup.Catalina.start(Catalina.java:693)    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.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 moreCaused 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 moreCaused 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

Caused by: java.lang.NoClassDefFoundError: Lorg/apache/logging/log4j/Logger;

另。现在学为啥不直接上SpringMVC？

没有引入log4j.jar 包

编橙之家文章，