帮忙看一下struts 配置哪出错了！ 400 请求报错 

2011-10-23 21:06:19 org.apache.catalina.core.AprLifecycleListener init

信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Users\Administrator\AppData\Local\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;D:\tomcat\Tomcat 6.0\bin

2011-10-23 21:06:19 org.apache.coyote.http11.Http11Protocol init

信息: Initializing Coyote HTTP/1.1 on http-8080

2011-10-23 21:06:19 org.apache.catalina.startup.Catalina load

信息: Initialization processed in 562 ms

2011-10-23 21:06:19 org.apache.catalina.core.StandardService start

信息: Starting service Catalina

2011-10-23 21:06:19 org.apache.catalina.core.StandardEngine start

信息: Starting Servlet Engine: Apache Tomcat/6.0.18

2011-10-23 21:06:24 com.opensymphony.xwork2.config.providers.XmlConfigurationProvider register

信息: Parsing configuration file [struts-default.xml]

2011-10-23 21:06:24 org.apache.catalina.core.StandardContext filterStart

严重: Exception starting filter struts2

Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory - bean - jar:file:/D:/tomcat/Tomcat%206.0/webapps/struts2/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:29:72

 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:208)

 at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)

 at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:131)

 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.ng.InitOperations.initDispatcher(InitOperations.java:69)

 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)

 at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)

 at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)

 at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)

 at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3709)

 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4363)

 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)

 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)

 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)

 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)

 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)

 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)

 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)

 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)

 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)

 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)

 at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)

 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)

 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)

 at org.apache.catalina.core.StandardService.start(StandardService.java:516)

 at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)

 at org.apache.catalina.startup.Catalina.start(Catalina.java:578)

 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

 at java.lang.reflect.Method.invoke(Method.java:597)

 at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)

 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name xwork has already been loaded by bean - jar:file:/D:/tomcat/Tomcat%206.0/webapps/struts2/WEB-INF/lib/struts2-core-2.0.14.jar!/struts-default.xml:30:72 - bean - jar:file:/D:/tomcat/Tomcat%206.0/webapps/struts2/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:29:72

 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:193)

 ... 34 more

2011-10-23 21:06:24 org.apache.catalina.core.StandardContext start

严重: Error filterStart

2011-10-23 21:06:24 org.apache.catalina.core.StandardContext start

严重: Context [/struts2] startup failed due to previous errors

2011-10-23 21:06:24 org.apache.coyote.http11.Http11Protocol start

信息: Starting Coyote HTTP/1.1 on http-8080

2011-10-23 21:06:24 org.apache.jk.common.ChannelSocket init

信息: JK: ajp13 listening on /0.0.0.0:8009

2011-10-23 21:06:24 org.apache.jk.server.JkMain start

信息: Jk running ID=0 time=0/105  config=null

2011-10-23 21:06:24 org.apache.catalina.startup.Catalina start

信息: Server startup in 4874 ms