之前在項目中的時候都是用的靜態定時任務,即在配置文件中寫好了何時由誰來作什麼事。後來無聊的時候就以爲這樣不能知足全部的需求,就像QQ的提醒,應該也是個動態的,由用戶去建立了一個定時通知任務,而後QQ服務器在指定的時間就會通知QQ用戶。固然QQ裏面的使用的不僅是動態的定時任務了。java
廢話很少說,仍是直接上代碼。spring
首先是spring的配置數據庫
<!-- quartz-2.x的配置 start --> <bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean" /> <!-- quartz-2.x的配置 end -->
聲明一個quartz的工廠就行,其它的由程序來動態完成。xcode
定時任務實體類(可存放到數據庫中),服務器
import com.xyan.frame.base.model.BaseModel; public class ScheduleJobModel extends BaseModel{ /** 任務名稱 */ private String jobName; /** 任務分組 */ private String jobGroup; /** 任務狀態 0禁用 1啓用 2刪除*/ private String jobStatus; /** 任務運行時間表達式 */ private String cronExpression; /** 任務描述 */ private String remark; public String getJobName() { return jobName; } public void setJobName(String jobName) { this.jobName = jobName; } public String getJobGroup() { return jobGroup; } public void setJobGroup(String jobGroup) { this.jobGroup = jobGroup; } public String getJobStatus() { return jobStatus; } public void setJobStatus(String jobStatus) { this.jobStatus = jobStatus; } public String getCronExpression() { return cronExpression; } public void setCronExpression(String cronExpression) { this.cronExpression = cronExpression; } public String getRemark() { return remark; } public void setRemark(String remark) { this.remark = remark; } }
注:BaseModel是我自定義的類,用於統一主鍵的。
app
而後就是任務執行監控了,任務運行入口,即Job實現類,在這裏我把它看做工廠類:ide
import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import com.xyan.frame.quartz.model.ScheduleJobModel; public class QuartzJobFactory implements Job { @Override public void execute(JobExecutionContext context) throws JobExecutionException { System.out.println(); System.out.println("任務成功運行"); ScheduleJobModel scheduleJob = (ScheduleJobModel)context.getMergedJobDataMap().get("scheduleJob"); System.out.println("任務名稱 = [" + scheduleJob.getJobName() + "]"); /* 此處能夠添加本身真正的業務邏輯 */ System.out.println(); } }
以後就是調用工具了,工具類代碼以下:工具
import java.util.ArrayList; import java.util.List; import java.util.Set; 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.scheduling.quartz.SchedulerFactoryBean; import com.xyan.frame.quartz.model.ScheduleJobModel; import com.xyan.frame.util.SpringUtil; /** * @author wangming */ public class JobUtils { private static org.springframework.scheduling.quartz.SchedulerFactoryBean schedulerFactoryBean= SpringUtil.getBean(SchedulerFactoryBean.class); /** * 添加任務並當即執行 * @param jobList * @throws SchedulerException */ public static void addJob(List<ScheduleJobModel> jobList) throws SchedulerException { // schedulerFactoryBean 由spring建立注入 Scheduler scheduler = schedulerFactoryBean.getScheduler(); for (ScheduleJobModel job : jobList) { TriggerKey triggerKey = TriggerKey.triggerKey(job.getJobName(), job.getJobGroup()); // 獲取trigger,即在spring配置文件中定義的 bean id="myTrigger" CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey); // 不存在,建立一個 if (null == trigger) { JobDetail jobDetail = JobBuilder.newJob(QuartzJobFactory.class).withIdentity(job.getJobName(),job.getJobGroup()).build(); jobDetail.getJobDataMap().put("scheduleJob", job); // 表達式調度構建器 CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression()); // 按新的cronExpression表達式構建一個新的trigger trigger = TriggerBuilder.newTrigger().withIdentity(job.getJobName(), job.getJobGroup()).withSchedule(scheduleBuilder).build(); scheduler.scheduleJob(jobDetail, trigger); } else { // Trigger已存在,那麼更新相應的定時設置 // 表達式調度構建器 CronScheduleBuilder scheduleBuilder = CronScheduleBuilder .cronSchedule(job.getCronExpression()); // 按新的cronExpression表達式從新構建trigger trigger = trigger.getTriggerBuilder().withIdentity(triggerKey) .withSchedule(scheduleBuilder).build(); // 按新的trigger從新設置job執行 scheduler.rescheduleJob(triggerKey, trigger); } } } /** *@Auhor:wangming *@Description:獲取計劃中的任務 *@return *@throws SchedulerException *@Date:2016年3月30日 下午3:11:56 */ public static List<ScheduleJobModel> getPlanTask() throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); GroupMatcher<JobKey> matcher = GroupMatcher.anyJobGroup(); Set<JobKey> jobKeys = scheduler.getJobKeys(matcher); List<ScheduleJobModel> jobList = new ArrayList<ScheduleJobModel>(); for (JobKey jobKey : jobKeys) { List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey); for (Trigger trigger : triggers) { ScheduleJobModel job = new ScheduleJobModel(); job.setJobName(jobKey.getName()); job.setJobGroup(jobKey.getGroup()); job.setRemark("觸發器:" + 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; } /** *@Auhor:wangming *@Description:獲取運行中的任務 *@throws SchedulerException *@Date:2016年3月30日 下午3:13:10 */ public static void getRunningTask() throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); List<JobExecutionContext> executingJobs = scheduler .getCurrentlyExecutingJobs(); List<ScheduleJobModel> jobList = new ArrayList<ScheduleJobModel>( executingJobs.size()); for (JobExecutionContext executingJob : executingJobs) { ScheduleJobModel job = new ScheduleJobModel(); JobDetail jobDetail = executingJob.getJobDetail(); JobKey jobKey = jobDetail.getKey(); Trigger trigger = executingJob.getTrigger(); job.setJobName(jobKey.getName()); job.setJobGroup(jobKey.getGroup()); job.setRemark("觸發器:" + 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); } } /** *@Auhor:wangming *@Description:暫停一個任務 *@param scheduleJob *@throws SchedulerException *@Date:2016年3月30日 下午3:13:48 */ public static void pauseJob(ScheduleJobModel scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.pauseJob(jobKey); } /** *@Auhor:wangming *@Description:恢復一個任務 *@param scheduleJob *@throws SchedulerException *@Date:2016年3月30日 下午3:14:02 */ public static void resume(ScheduleJobModel scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.resumeJob(jobKey); } /** *@Auhor:wangming *@Description:刪除一個任務 *@param scheduleJob *@throws SchedulerException *@Date:2016年3月30日 下午3:14:21 */ public static void delete(ScheduleJobModel scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.deleteJob(jobKey); } /** *@Auhor:wangming *@Description:(用一句話描述) *@param scheduleJob *@throws SchedulerException *@Date:2016年3月30日 下午3:14:38 */ public static void noWaitRun(ScheduleJobModel scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); scheduler.triggerJob(jobKey); } /** *@Auhor:wangming *@Description:更新一個任務 *@param scheduleJob *@throws SchedulerException *@Date:2016年3月30日 下午3:15:37 */ public static void update(ScheduleJobModel scheduleJob) throws SchedulerException { Scheduler scheduler = schedulerFactoryBean.getScheduler(); TriggerKey triggerKey = TriggerKey.triggerKey(scheduleJob.getJobName(), scheduleJob.getJobGroup()); // 獲取trigger,即在spring配置文件中定義的 bean id="myTrigger" CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey); // 表達式調度構建器 CronScheduleBuilder scheduleBuilder = CronScheduleBuilder .cronSchedule(scheduleJob.getCronExpression()); // 按新的cronExpression表達式從新構建trigger trigger = trigger.getTriggerBuilder().withIdentity(triggerKey) .withSchedule(scheduleBuilder).build(); // 按新的trigger從新設置job執行 scheduler.rescheduleJob(triggerKey, trigger); } }
完成以上的步驟之後就能夠在項目中動態的調用了,如個人測試代碼:測試
@Autowired private ScheduleJobService jobServicee; @RequestMapping(value = "testJob") @ResponseBody public String testJob() throws SchedulerException { List<ScheduleJobModel> jobList=jobServicee.selectByExample(null); JobUtils.addJob(jobList); return "test"; } @RequestMapping(value = "pauseJob") @ResponseBody public String pauseJob() throws SchedulerException { ScheduleJobModel job=jobServicee.selectByPrimaryKey(3L); JobUtils.pause(job); return "test"; }
到這裏,quartz 2的動態定時任務功能算是告一段落了,對經常使用的一些功能進行了實現,相信能夠知足通常項目的需求了。固然了,有不少地方仍是能夠再優化的。
優化