@JobHandler(value = "demoJobHandler")
     @Component
     public class DemoJobHandler extends IJobHandler {
         
         @Resource
         private ConsumerCardInfoService consumerCardInfoService;
         @Override
         public ReturnT<String> execute(String param) throws Exception {
             XxlJobLogger.log("XXL-JOB, plan a demo result:" + consumerCardInfoService.selectCities().get(0).getCityName());
             return SUCCESS;
         }
     }