s2sh Unable to load configuration. - [unknown location]

• Unable to load configuration. - [unknown location]
•     at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
•     at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
•     at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
•     at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
•     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:3693)
•     at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340)
•     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:920)
•     at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
•     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
•     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
•     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:566)
•     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)

版本：
spring:3.0.1
hibernate:3.3
struts:2.1.8

产生原因：
jar包冲突
xerce.jar和xml-apis.jar这两个jar包冲突
删除xerce.jar