public class DeviceAction extends AbstractAction implements ModelDriven<Device> {     private static Log log = LogFactory.getLog(DeviceAction.class);     private Device device=new Device(); //只能json化 模型驱动的bean     private String result; //无法返回reslut的json值         public String getResult(){         return result;     }     public void setResult(String result){         this.result=result     }     public DeviceDTO getModel() {         return device;     }     public Device getDevice() {         return device;     }     public void setDevice(Device device) {         this.device = device;     } }            

<action name="queryPu"             class="com.jxj.bss.web.actions.DeviceAction"             method="queryPu">             <interceptor-ref name="isLogin"></interceptor-ref>             <result type="json">                 <param name="includeProperties">                     resultCode                 </param>             </result>         </action>

<action name="queryPu"             class="com.jxj.bss.web.actions.DeviceAction"             method="queryPu">             <interceptor-ref name="isLogin"></interceptor-ref>             <result type="json">                 <param name="root">action</param>                 <param name="includeProperties">                     resultCode                 </param>             </result>         </action>