struts2中action实现ModelDriven后无法返回json的解决方法

PHP小丑

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;
  }
}

xml配置:

<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>

解决办法:

<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>