struts2 exception,该怎么解决

struts2 exception

java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:514)
at com.opensymphony.xwork2.inject.ContainerImpl$8.call(ContainerImpl.java:547)
at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:580)
at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:545)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:243)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:390)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:437)
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.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:95)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:38)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:545)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1133)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:420)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:457)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:38)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:156)
at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:120)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:38)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:156)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:38)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:119)
at org.mortbay.jetty.Server.doStart(Server.java:210)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:38)
at org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:134)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:327)
at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:272)
at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:177)
at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:183)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)