content: package com.admin4j.job.service.impl;
  
  
  import com.admin4j.job.enetity.SysJob;
  import com.admin4j.job.enetity.form.QuartzJobQuery;
  import com.admin4j.job.mapper.SysJobMapper;
  import com.admin4j.job.service.ISysJobService;
  import com.admin4j.job.util.CronUtils;
  import com.admin4j.job.util.ScheduleConstants;
  import com.admin4j.job.util.ScheduleUtils;
  import org.quartz.JobDataMap;
  import org.quartz.JobKey;
  import org.quartz.Scheduler;
  import org.quartz.SchedulerException;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  
  import javax.annotation.PostConstruct;
  import java.util.List;
  
  /**
   * 定时任务调度信息 服务层
   *
   * @author ruoyi
   */
  @Service
  public class SysJobServiceImpl implements ISysJobService {
      @Autowired
      private Scheduler scheduler;
  
      @Autowired
      private SysJobMapper jobMapper;
  
      /**
       * 项目启动时，初始化定时器 主要是防止手动修改数据库导致未同步到定时任务处理（注：不能手动修改数据库ID和任务组名，否则会导致脏数据）
       */
      @PostConstruct
      public void init() throws SchedulerException {
          scheduler.clear();
          List<SysJob> jobList = jobMapper.selectJobAll();
          for (SysJob job : jobList) {
              ScheduleUtils.createScheduleJob(scheduler, job);
          }
      }
  
      /**
       * 获取quartz调度器的计划任务列表
       *
       * @param job 调度信息
       * @return
       */
      @Override
      public List<SysJob> selectJobList(QuartzJobQuery job) {
          return jobMapper.selectJobList(job);
      }
  
      /**
       * 通过调度任务ID查询调度信息
       *
       * @param jobId 调度任务ID
       * @return 调度任务对象信息
       */
      @Override
      public SysJob selectJobById(Long jobId) {
          return jobMapper.selectJobById(jobId);
      }
  
      /**
       * 暂停任务
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int pauseJob(SysJob job) throws SchedulerException {
          Long jobId = job.getJobId();
          String jobGroup = job.getJobGroup();
          job.setStatus(ScheduleConstants.Status.PAUSE.getValue());
          int rows = jobMapper.updateJob(job);
          if (rows > 0) {
              scheduler.pauseJob(ScheduleUtils.getJobKey(jobId, jobGroup));
          }
          return rows;
      }
  
      /**
       * 恢复任务
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int resumeJob(SysJob job) throws SchedulerException {
          Long jobId = job.getJobId();
          String jobGroup = job.getJobGroup();
          job.setStatus(ScheduleConstants.Status.NORMAL.getValue());
          int rows = jobMapper.updateJob(job);
          if (rows > 0) {
              scheduler.resumeJob(ScheduleUtils.getJobKey(jobId, jobGroup));
          }
          return rows;
      }
  
      /**
       * 删除任务后，所对应的trigger也将被删除
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int deleteJob(SysJob job) throws SchedulerException {
          Long jobId = job.getJobId();
          String jobGroup = job.getJobGroup();
          int rows = jobMapper.deleteJobById(jobId);
          if (rows > 0) {
              scheduler.deleteJob(ScheduleUtils.getJobKey(jobId, jobGroup));
          }
          return rows;
      }
  
      /**
       * 批量删除调度信息
       *
       * @param jobIds 需要删除的任务ID
       * @return 结果
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public void deleteJobByIds(Long[] jobIds) throws SchedulerException {
          for (Long jobId : jobIds) {
              SysJob job = jobMapper.selectJobById(jobId);
              deleteJob(job);
          }
      }
  
      /**
       * 任务调度状态修改
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int changeStatus(SysJob job) throws SchedulerException {
          int rows = 0;
          String status = job.getStatus();
          if (ScheduleConstants.Status.NORMAL.getValue().equals(status)) {
              rows = resumeJob(job);
          } else if (ScheduleConstants.Status.PAUSE.getValue().equals(status)) {
              rows = pauseJob(job);
          }
          return rows;
      }
  
      /**
       * 立即运行任务
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public boolean run(SysJob job) throws SchedulerException {
          boolean result = false;
          Long jobId = job.getJobId();
          String jobGroup = job.getJobGroup();
          SysJob properties = selectJobById(job.getJobId());
          // 参数
          JobDataMap dataMap = new JobDataMap();
          dataMap.put(ScheduleConstants.TASK_PROPERTIES, properties);
          JobKey jobKey = ScheduleUtils.getJobKey(jobId, jobGroup);
          if (scheduler.checkExists(jobKey)) {
              result = true;
              scheduler.triggerJob(jobKey, dataMap);
          }
          return result;
      }
  
      /**
       * 新增任务
       *
       * @param job 调度信息 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int insertJob(SysJob job) throws SchedulerException {
          job.setStatus(ScheduleConstants.Status.PAUSE.getValue());
          int rows = jobMapper.insertJob(job);
          if (rows > 0) {
              ScheduleUtils.createScheduleJob(scheduler, job);
          }
          return rows;
      }
  
      /**
       * 更新任务的时间表达式
       *
       * @param job 调度信息
       */
      @Override
      @Transactional(rollbackFor = Exception.class)
      public int updateJob(SysJob job) throws SchedulerException {
          SysJob properties = selectJobById(job.getJobId());
          int rows = jobMapper.updateJob(job);
          if (rows > 0) {
              updateSchedulerJob(job, properties.getJobGroup());
          }
          return rows;
      }
  
      /**
       * 更新任务
       *
       * @param job      任务对象
       * @param jobGroup 任务组名
       */
      public void updateSchedulerJob(SysJob job, String jobGroup) throws SchedulerException {
          Long jobId = job.getJobId();
          // 判断是否存在
          JobKey jobKey = ScheduleUtils.getJobKey(jobId, jobGroup);
          if (scheduler.checkExists(jobKey)) {
              // 防止创建时存在数据问题 先移除，然后在执行创建操作
              scheduler.deleteJob(jobKey);
          }
          ScheduleUtils.createScheduleJob(scheduler, job);
      }
  
      /**
       * 校验cron表达式是否有效
       *
       * @param cronExpression 表达式
       * @return 结果
       */
      @Override
      public boolean checkCronExpressionIsValid(String cronExpression) {
          return CronUtils.isValid(cronExpression);
      }
  }
  