Quartz 2.2 动态添加、修改和删除定时任务

来源：互联网发布：js模拟鼠标移动编辑：程序博客网时间：2024/05/18 01:24

Quartz 2.2 的实现原理和运行过程, 请阅读我的另一篇文章：http://blog.csdn.net/xlxxcc/article/details/52104463

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);          }      }  }1
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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...");    }}1
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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();          }      }}

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