java.lang.IllegalArgumentException: matching editors or conversion strategy found

Servlet.service() for servlet default threw exception
java.lang.IllegalArgumentException: Cannot convert value of type [dxm.com.action.UserAction] to required type [dxm.com.vo.User] for property 'user': no matching editors or conversion strategy found
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:219)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:138)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:386)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1248)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1008)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:329)
at com.opensymphony.xwork2.spring.SpringObjectFactory.autoWireBean(SpringObjectFactory.java:167)
at com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:154)
at com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:128)
at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:141)
at com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:111)
at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:270)
at com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:360)
at com.opensymphony.xwork2.DefaultActionInvocation.access$000(DefaultActionInvocation.java:38)
at com.opensymphony.xwork2.DefaultActionInvocation$1.doProfiling(DefaultActionInvocation.java:78)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.<init>(DefaultActionInvocation.java:70)
at com.opensymphony.xwork2.DefaultActionInvocation.<init>(DefaultActionInvocation.java:66)
at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:189)
at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:41)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:497)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)
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)