quartz定时任务怎么执行？Quartz2.2动态添加

quartz定时任务怎么执行？Quartz2.2动态添加import java.util.Date; import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; public class MyJob implements Job{ public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException { System.out.println(new Date() ": doing something..."); } } Test.Java 测试类public class Test { public static String JOB_NAME = "动态任务调度"; publi

quartz 2.2 的实现原理和运行过程，若不懂 请阅读我的上一篇文章

下面直接上代码：

QuartzManager.java 动态添加、修改和删除定时任务管理类

import org.quartz.CronSchedulebuilder; import org.quartz.CronTrigger; import org.quartz.Job; import org.quartz.JobBuilder; import org.quartz.JobDetail; import org.quartz.JobKey; import org.quartz.Scheduler; import org.quartz.SchedulerFactory; import org.quartz.Trigger; import org.quartz.TriggerBuilder; import org.quartz.TriggerKey; import org.quartz.impl.StdSchedulerFactory; public class QuartzManager { private static SchedulerFactory schedulerFactory = new StdSchedulerFactory(); /** * @Description: 添加一个定时任务 * * @param jobName 任务名 * @param jobGroupName 任务组名 * @param triggerName 触发器名 * @param triggerGroupName 触发器组名 * @param jobClass 任务 * @param cron 时间设置，参考quartz说明文档 */ @SuppressWarnings({ "unchecked" "rawtypes" }) public static void addJob(String jobName String jobGroupName String triggerName String triggerGroupName Class jobClass String cron) { try { Scheduler sched = schedulerFactory.getScheduler(); // 任务名，任务组，任务执行类 JobDetail jobDetail= JobBuilder.newJob(jobClass).withIdentity(jobName jobGroupName).build(); // 触发器 TriggerBuilder<trigger> triggerBuilder = TriggerBuilder.newTrigger(); // 触发器名 触发器组 triggerBuilder.withIdentity(triggerName triggerGroupName); triggerBuilder.startNow(); // 触发器时间设定 triggerBuilder.withSchedule(CronScheduleBuilder.cronSchedule(cron)); // 创建Trigger对象 CronTrigger trigger = (CronTrigger) triggerBuilder.build(); // 调度容器设置JobDetail和Trigger sched.scheduleJob(jobDetail trigger); // 启动 if (!sched.isShutdown()) { sched.start(); } } catch (Exception e) { throw new RuntimeException(e); } } /** * @Description: 修改一个任务的触发时间 * * @param jobName * @param jobGroupName * @param triggerName 触发器名 * @param triggerGroupName 触发器组名 * @param cron 时间设置，参考quartz说明文档 */ public static void modifyJobTime(String jobName String jobGroupName String triggerName String triggerGroupName String cron) { try { Scheduler sched = schedulerFactory.getScheduler(); TriggerKey triggerKey = TriggerKey.triggerKey(triggerName triggerGroupName); CronTrigger trigger = (CronTrigger) sched.getTrigger(triggerKey); if (trigger == null) { return; } String oldTime = trigger.getCronExpression(); if (!oldTime.equalsIgnoreCase(cron)) { /** 方式一 ：调用 rescheduleJob 开始 */ // 触发器 TriggerBuilder<Trigger> triggerBuilder = TriggerBuilder.newTrigger(); // 触发器名 触发器组 triggerBuilder.withIdentity(triggerName triggerGroupName); triggerBuilder.startNow(); // 触发器时间设定 triggerBuilder.withSchedule(CronScheduleBuilder.cronSchedule(cron)); // 创建Trigger对象 trigger = (CronTrigger) triggerBuilder.build(); // 方式一 ：修改一个任务的触发时间 sched.rescheduleJob(triggerKey trigger); /** 方式一 ：调用 rescheduleJob 结束 */ /** 方式二：先删除，然后在创建一个新的Job */ //JobDetail jobDetail = sched.getJobDetail(JobKey.jobKey(jobName jobGroupName)); //Class<? extends Job> jobClass = jobDetail.getJobClass(); //removeJob(jobName jobGroupName triggerName triggerGroupName); //addJob(jobName jobGroupName triggerName triggerGroupName jobClass cron); /** 方式二 ：先删除，然后在创建一个新的Job */ } } catch (Exception e) { throw new RuntimeException(e); } } /** * @Description: 移除一个任务 * * @param jobName * @param jobGroupName * @param triggerName * @param triggerGroupName */ public static void removeJob(String jobName String jobGroupName String triggerName String triggerGroupName) { try { Scheduler sched = schedulerFactory.getScheduler(); TriggerKey triggerKey = TriggerKey.triggerKey(triggerName triggerGroupName); sched.pauseTrigger(triggerKey);// 停止触发器 sched.unscheduleJob(triggerKey);// 移除触发器 sched.deleteJob(JobKey.jobKey(jobName jobGroupName));// 删除任务 } catch (Exception e) { throw new RuntimeException(e); } } /** * @Description:启动所有定时任务 */ public static void startJobs() { try { Scheduler sched = schedulerFactory.getScheduler(); sched.start(); } catch (Exception e) { throw new RuntimeException(e); } } /** * @Description:关闭所有定时任务 */ public static void shutdownJobs() { try { Scheduler sched = schedulerFactory.getScheduler(); if (!sched.isShutdown()) { sched.shutdown(); } } catch (Exception e) { throw new RuntimeException(e); } } }

MyJob.java 任务类

import java.util.Date; import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; public class MyJob implements Job{ public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException { System.out.println(new Date() ": doing something..."); } }

Test.Java 测试类

public class Test { public static String JOB_NAME = "动态任务调度"; public static String TRIGGER_NAME = "动态任务触发器"; public static String JOB_GROUP_NAME = "XLXXCC_JOB_GROUP"; public static String TRIGGER_GROUP_NAME = "XLXXCC_JOB_GROUP"; public static void main(String[] args) { try { System.out.println("【系统启动】开始(每1秒输出一次)..."); QuartzManager.addJob(JOB_NAME JOB_GROUP_NAME TRIGGER_NAME TRIGGER_GROUP_NAME MyJob.class "0/1 * * * * ?"); Thread.sleep(5000); System.out.println("【修改时间】开始(每5秒输出一次)..."); QuartzManager.modifyJobTime(JOB_NAME JOB_GROUP_NAME TRIGGER_NAME TRIGGER_GROUP_NAME "0/5 * * * * ?"); Thread.sleep(6000); System.out.println("【移除定时】开始..."); QuartzManager.removeJob(JOB_NAME JOB_GROUP_NAME TRIGGER_NAME TRIGGER_GROUP_NAME); System.out.println("【移除定时】成功"); } catch (Exception e) { e.printStackTrace(); } } }