struts.xml
<constant name=”struts.objectFactory” value=”spring“></constant>
<!– struts2的扩展名，比如struts1的时候，用的.do,struts2默认为.action，可以改成其它的，比如.dxd –>
<constant name=”struts.action.extension” value=”action”></constant>
<!– 资源文件 –>
<constant name=”struts.custom.i18n.resources” value=”messageResource”></constant>
<package name=”register1″ namespace=”/” extends=”struts-default”>
<action name=”showIndex”>
<result name=”success”>/WEB-INF/pages/index.jsp</result>
</action>
<action name=”register” class=”registerAction” method=”addUser”>
<result name=”success”>/WEB-INF/pages/welcome.jsp</result>
<result name=”input”>/WEB-INF/pages/error.jsp</result>
</action>
</package>

applicationContext.xml
<bean id=”registerAction” class=”com.broada.demo.action.RegisterAction” scope=”prototype”>
<property name=”userserviceImpl” ref=”userserviceId”></property>
</bean>
<bean id=”userdaoId” class=”com.broada.demo.daoImpl.UserDaoImpl”>
<property name=”sqlMapClient” ref=”sqlMapClient”></property>
</bean>
<bean id=”userserviceId” class=”com.broada.demo.serviceImpl.UserServiceImpl”>
<property name=”userdaoImpl” ref=”userdaoId”/>
</bean>

<bean id=”sqlMapClient” class=”org.springframework.orm.ibatis.SqlMapClientFactoryBean”>
<property name=”configLocation”> 
<value>/WEB-INF/ibatis/SqlMapConfig.xml</value>
</property>
<property name=”dataSource”>
<ref bean=”dataSource”/>
</property>
</bean>

web.xml
    <listener>
   <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:/applicationContext-*.xml</param-value>
  </context-param>
  <!– struts2模块 –>
  <filter>
   <filter-name>struts2</filter-name>
   <!– struts2的核心过滤器 –>
   <filter-class>
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
   </filter-class>
  </filter>
  <filter-mapping>
   <filter-name>struts2</filter-name>
   <url-pattern>/*</url-pattern>
  </filter-mapping>

控制台报错
2014-9-30 13:49:49 org.apache.struts2.dispatcher.Dispatcher error
严重: Exception occurred during processing request: Unable to instantiate Action, registerAction,  defined for “”login”” in namespace “”/””registerAction
Unable to instantiate Action, registerAction,  defined for “”login”” in namespace “”/””registerAction