定时器动态修改参数demo

package com.snailxr.base.task.service; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Set; import javax.annotation.PostConstruct; import org.apache.log4j.Logger; import org.quartz.CronScheduleBuilder; import org.quartz.CronTrigger; import org.quartz.JobBuilder; import org.quartz.JobDetail; import org.quartz.JobExecutionContext; import org.quartz.JobKey; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.Trigger; import org.quartz.TriggerBuilder; import org.quartz.TriggerKey; import org.quartz.impl.matchers.GroupMatcher; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.scheduling.quartz.SchedulerFactoryBean; import org.springframework.stereotype.Service; import com.snailxr.base.task.QuartzJobFactory; import com.snailxr.base.task.QuartzJobFactoryDisallowConcurrentExecution; import com.snailxr.base.task.dao.ScheduleJobMapper; import com.snailxr.base.task.domain.ScheduleJob; /** * * @Description: 计划任务管理 * @author chenjianlin * @date 2014年4月25日 下午2:43:54 */ @Service public class JobTaskService { public final Logger log = Logger.getLogger(this.getClass()); @Autowired private SchedulerFactoryBean schedulerFactoryBean; @Autowired private ScheduleJobMapper scheduleJobMapper; /** * 从数据库中取 区别于getAllJob * * @return */ public List<ScheduleJob> getAllTask() { return scheduleJobMapper.getAll(); } /** * 添加到数据库中 区别于addJob */ public void addTask(ScheduleJob job) { job.setCreateTime(new Date()); scheduleJobMapper.insertSelective(job); } /** * 从数据库中查询job */ public ScheduleJob getTaskById(Long jobId) { return scheduleJobMapper.selectByPrimaryKey(jobId); } /** * 更改任务状态 * * @throws SchedulerException */ public void changeStatus(Long jobId, String cmd) throws SchedulerException { ScheduleJob job = getTaskById(jobId); if (job == null) { return; } if ("stop".equals(cmd)) { deleteJob(job); job.setJobStatus(ScheduleJob.STATUS_NOT_RUNNING); } else if ("start".equals(cmd)) { job.setJobStatus(ScheduleJob.STATUS_RUNNING); addJob(job); } scheduleJobMapper.updateByPrimaryKeySelective(job); } /** * 更改任务 cron表达式 * * @throws SchedulerException */ public void updateCron(Long jobId, String cron) throws SchedulerException { ScheduleJob job = getTaskById(jobId); if (job == null) { return; } job.setCronExpression(cron); if (ScheduleJob.STATUS_RUNNING.equals(job.getJobStatus())) { updateJobCron(job); } scheduleJobMapper.updateByPrimaryKeySelective(job); } /** * 添加任务 * * @param scheduleJob * @throws SchedulerException */ public void addJob(ScheduleJob job) throws SchedulerException { if (job == null || !ScheduleJob.STATUS_RUNNING.equals(job.getJobStatus())) { return; } Scheduler scheduler = schedulerFactoryBean.getScheduler(); log.debug(scheduler + ".......................................................................................add"); TriggerKey triggerKey = TriggerKey.triggerKey(job.getJobName(), job.getJobGroup()); CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey); // 不存在，创建一个 if (null == trigger) { Class clazz = ScheduleJob.CONCURRENT_IS.equals(job.getIsConcurrent()) ? QuartzJobFactory.class : QuartzJobFactoryDisallowConcurrentExecution.class; JobDetail jobDetail = JobBuilder.newJob(clazz).withIdentity(job.getJobName(), job.getJobGroup()).build(); jobDetail.getJobDataMap().put("scheduleJob", job); CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression()); trigger = TriggerBuilder.newTrigger().withIdentity(job.getJobName(), job.getJobGroup()).withSchedule(scheduleBuilder).build(); scheduler.scheduleJob(jobDetail, trigger); } else { // Trigger已存在，那么更新相应的定时设置 CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression()); // 按新的cronExpression表达式重新构建trigger trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build(); // 按新的trigger重新设置job执行 scheduler.rescheduleJob(triggerKey, trigger); } } @PostConstruct public void init() throws Exception { Scheduler scheduler = schedulerFactoryBean.getScheduler(); // 这里获取任务信息数据 List<ScheduleJob> jobList = scheduleJobMapper.getAll(); for (ScheduleJob job : jobList) { addJob(job); } } /** * 获取所有计划中的任务列表 * * @return * @throws SchedulerException */ public List<ScheduleJob> getAllJob() throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); GroupMatcher<JobKey> matcher = GroupMatcher.anyJobGroup(); Set<JobKey> jobKeys = scheduler.getJobKeys(matcher); List<ScheduleJob> jobList = new ArrayList<ScheduleJob>(); for (JobKey jobKey : jobKeys) { List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey); for (Trigger trigger : triggers) { ScheduleJob job = new ScheduleJob(); job.setJobName(jobKey.getName()); job.setJobGroup(jobKey.getGroup()); job.setDescription("触发器:" + trigger.getKey()); Trigger.TriggerState triggerState = scheduler.getTriggerState(trigger.getKey()); job.setJobStatus(triggerState.name()); if (trigger instanceof CronTrigger) { CronTrigger cronTrigger = (CronTrigger) trigger; String cronExpression = cronTrigger.getCronExpression(); job.setCronExpression(cronExpression); } jobList.add(job); } } return jobList; } /** * 所有正在运行的job * * @return * @throws SchedulerException */ public List<ScheduleJob> getRunningJob() throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); List<JobExecutionContext> executingJobs = scheduler.getCurrentlyExecutingJobs(); List<ScheduleJob> jobList = new ArrayList<ScheduleJob>(executingJobs.size()); for (JobExecutionContext executingJob : executingJobs) { ScheduleJob job = new ScheduleJob(); JobDetail jobDetail = executingJob.getJobDetail(); JobKey jobKey = jobDetail.getKey(); Trigger trigger = executingJob.getTrigger(); job.setJobName(jobKey.getName()); job.setJobGroup(jobKey.getGroup()); job.setDescription("触发器:" + trigger.getKey()); Trigger.TriggerState triggerState = scheduler.getTriggerState(trigger.getKey()); job.setJobStatus(triggerState.name()); if (trigger instanceof CronTrigger) { CronTrigger cronTrigger = (CronTrigger) trigger; String cronExpression = cronTrigger.getCronExpression(); job.setCronExpression(cronExpression); } jobList.add(job); } return jobList; } /** * 暂停一个job * * @param scheduleJob * @throws SchedulerException */ public void pauseJob(ScheduleJob scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.pauseJob(jobKey); } /** * 恢复一个job * * @param scheduleJob * @throws SchedulerException */ public void resumeJob(ScheduleJob scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.resumeJob(jobKey); } /** * 删除一个job * * @param scheduleJob * @throws SchedulerException */ public void deleteJob(ScheduleJob scheduleJob) throws SchedulerException