action spring 注入错误，如果检查各项注入都没有错误时，考虑struts 是否配置了namespace(如果你有多个namespace="/")

[ERROR] 2015-01-04 09:42:35,180 (CommonsLogger.java:38) - Exception occurred during processing request: Unable to instantiate Action, com.web.home.action.IndexAction, defined for 'index' in namespace '/'Failed to convert property value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO': no matching editors or conversion strategy found
Unable to instantiate Action, com.web.home.action.IndexAction, defined for 'index' in namespace '/'Failed to convert property value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO': no matching editors or conversion strategy found
at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:316)
at com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:397)
at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:194)
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.FilterDispatcher.doFilter(FilterDispatcher.java:434)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO': no matching editors or conversion strategy found
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:391)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1289)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1250)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:329)
at com.opensymphony.xwork2.spring.SpringObjectFactory.autoWireBean(SpringObjectFactory.java:203)
at com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:183)
at com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:154)
at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:151)
at com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:121)
at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:297)
... 27 more
Caused by: java.lang.IllegalArgumentException: Cannot convert value of type [com.web.user.bo.impl.UserBO] to required type [com.web.xuser.bo.IUserBO] for property 'userBO': no matching editors or conversion strategy found
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:231)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:138)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:386)
... 37 more

上面的错误是 注入错误，但是如果检查各项注入配置没有错误时 ，考虑struts 是否配置了 namespace  . (如果你有多个namespace="/")