Unable to load configuration. - bean - jar:file:/D:/Program%20Files/Tomcat-7.0.52/webapps/S2SH

 : Exception starting filter struts2
Unable to load configuration. - bean - jar:file:/D:/Program%20Files/Tomcat-7.0.52/webapps/S2SH/WEB-INF/lib/struts2-core-2.3.4.jar!/struts-default.xml:51:178
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:450)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4809)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5485)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1229)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1875)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	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:744)
Caused by: Unable to load configuration. - bean - jar:file:/D:/Program%20Files/Tomcat-7.0.52/webapps/S2SH/WEB-INF/lib/struts2-core-2.3.4.jar!/struts-default.xml:51:178
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:390)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:437)
	... 18 more
Caused by: Unable to load bean: type:org.apache.struts2.dispatcher.multipart.MultiPartRequest class:org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest - bean - jar:file:/D:/Program%20Files/Tomcat-7.0.52/webapps/S2SH/WEB-INF/lib/struts2-core-2.3.4.jar!/struts-default.xml:51:178
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:243)
	at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:210)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
	... 20 more
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItemFactory
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2493)
	at java.lang.Class.getDeclaredConstructors(Class.java:1901)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:233)
	... 23 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileItemFactory
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
	... 27 more
  06, 2014 4:58:57   org.apache.catalina.core.StandardContext startInternal

原因:commons-fileupload-1.2.2が欠けている.jarはstruts 2に必要なjarパッケージだとは思わなかった