严重: Exception starting filter struts2
在启动tomcat6时,struts 2的报以下异常
严重: Exception starting filter struts2 java.lang.ArrayIndexOutOfBoundsException: 0 at org.apache.struts2.convention.SEOActionNameBuilder.build(SEOActionNameBuilder.java:69) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.determineActionName(PackageBasedActionConfigBuilder.java:601) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildConfiguration(PackageBasedActionConfigBuilder.java:445) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:278) at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:52) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:200) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403) at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48) 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:4342) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) 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:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) 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) 2009-11-13 16:47:48 org.apache.catalina.core.StandardContext start 严重: Error filterStart
问题描述：struts 2 严重: Exception starting filter struts2 org.apache.struts2.convention.SEOActionNameBuilder.build 异常
出现原因：你的action类继承的不是com.opensymphony.xwork2.ActionSupport这个类，比如你继承了org.springframework.web.struts.ActionSupport这个类，就会报错。
解决办法：老老实实继承com.opensymphony.xwork2.ActionSupport这个类。
下面是在struts 2邮件列表中出现的一段原话:
this is related to how the convention plugin build the action name, anything before “Action”
becomes the action name, so an action cannot be called “Action”. I will fix the code to throw
an exception but there is nothing else that can be done in that case.
http://mail-archives.apache.org/mod_mbox/struts-issues/200909.mbox/%3C1093395639.1253143413410.JavaMail.jira@brutus%3E
弄了一天，原来是继承错了，满眼都是泪。谢谢了。