Filter [struts2]: could not be initialized

[software163]

2008-8-2 6:07:52 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.6.0\bin;C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin
2008-8-2 6:07:53 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2008-8-2 6:07:53 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 2501 ms
2008-8-2 6:07:54 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-8-2 6:07:54 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.14
2008-8-2 6:07:55 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2008-8-2 6:07:55 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
2008-8-2 6:08:09 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
2008-8-2 6:13:40 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter webwork
com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='struts.devMode'] in public static void org.apache.struts2.dispatcher.Dispatcher.setDevMode(java.lang.String).
at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:157)
at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMethods(ContainerImpl.java:126)
at com.opensymphony.xwork2.inject.ContainerImpl.injectStatics(ContainerImpl.java:111)
at com.opensymphony.xwork2.inject.ContainerBuilder.create(ContainerBuilder.java:494)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:145)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:395)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:452)
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:201)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)