利用Linux中的crontab实现分布式项目定时任务功能

@Controller
@RequestMapping("/task/topic")
public class TopicQuartzController {
  protected Logger logger = LoggerFactory.getLogger(TopicQuartzController.class);
  @Autowired
  private LiveTopicService liveTopicService;
  @RequestMapping("execute")
  @ResponseBody
  public CommonResult execute(HttpServletRequest request,HttpServletResponse response,String type){
    long t1 = System.currentTimeMillis();
    logger.error("topic定时器执行开始"+type);
    CommonResult result = new CommonResult();
    if(QlchatUtil.isEmpty(type)){
      result.setMsg("参数为空");
      result.setSuccess(false);
      return result;
    }
    try {
      switch (type) {
        case "autoEndTopic":
          this.autoEndTopic();
          break;
        case "oneWeek":
          this.endTopicOneWeek();
          break;
        default:
          break;
      }
      result.setSuccess(true);
      result.setMsg("执行完成" + type);
    } catch (Exception e) {
      logger.error("topic定时器执行异常" + type, e);
      result.setMsg("topic定时器执行异常" + type);
      result.setSuccess(false);
    }
    long t2 = System.currentTimeMillis();
    logger.error("topic定时器执行结束"+type+",耗时="+(t2 - t1) + "ms");
    return result;
  }
  private void autoEndTopic(){
    String sql = "SELECT id_ topicId FROM skg_live_topic lt WHERE lt.`status_` = 'beginning' AND lt.end_time_ IS NOT NULL AND lt.`end_time_` < NOW()";
    JdbcTemplate jdbcTemplate = SpringHelper.getBean(JdbcTemplate.class);
    List<Map<String, Object resultMap = jdbcTemplate.queryForList(sql);
    for (Map<String, Object> map : resultMap) {
      String topicId = String.valueOf(map.get("topicId"));
      try {
        LiveTopicPo liveTopicPo = liveTopicService.loadCache(topicId);
        liveTopicService.endTopic(liveTopicPo, liveTopicPo.getCreateBy());
      }catch (Exception e){
        logger.error("autoEndTopic异常" + topicId, e);
      }
    }
  }
  /**
   * 结束之前的没有结束时间的话题，只跑一周
   */
  private void endTopicOneWeek(){
    String sql = "SELECT id_ topicId FROM skg_live_topic lt WHERE lt.`status_` = 'beginning' AND lt.end_time_ IS NULL AND lt.start_time_ <= (NOW() - interval 48 hour)";
    JdbcTemplate jdbcTemplate = SpringHelper.getBean(JdbcTemplate.class);
    List<Map<String, Object resultMap = jdbcTemplate.queryForList(sql);
    for (Map<String, Object> map : resultMap) {
      String topicId = String.valueOf(map.get("topicId"));
      try {
        LiveTopicPo liveTopicPo = liveTopicService.loadCache(topicId);
        liveTopicService.endTopic(liveTopicPo, liveTopicPo.getCreateBy());
      }catch (Exception e){
        logger.error("autoEndTopic异常" + topicId, e);
      }
    }
  }
}

*/30 * * * * curl 'http://10.47.161.40:8181/task/topic/execute.do"color: #ff0000">总结

以上所述是小编给大家介绍的利用Linux中的crontab实现分布式项目定时任务功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！