struts2 漏洞,升级到2.3.15之后报There is no Action 地图ped for namespace [/] and action na

struts2 漏洞,升级到2.3.15之后报There is no Action mapped for namespace [/] and action na
今天局方爆漏洞说struts2的ognl有漏洞，要升级，我升级到最新版本之后出现如下问题，升级之前都没有这个问题，请教下大家。错误信息如下：
2013-09-23 19:24:35,094 WARN [org.apache.struts2.dispatcher.Dispatcher] - Could not find action or resultThere is no Action mapped for namespace [/] and action name [interface!udbLoginBack] associated with context path []. - [unknown location]at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:553)at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)at java.lang.Thread.run(Thread.java:619)2013-09-23 19:24:35,100 ERROR [org.apache.struts2.dispatcher.Dispatcher] - Exception occurred during processing request: There is no Action mapped for namespace [/] and action name [interface!udbLoginBack] associated with context path [].There is no Action mapped for namespace [/] and action name [interface!udbLoginBack] associated with context path []. - [unknown location]at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:553)at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)at java.lang.Thread.run(Thread.java:619) 

------解决方案--------------------
struts2配置出问题了大概。