Quartz任务调度器

Spring 整合 Quartz 实现动态定时任务

Quartz 基本概念及原理

作为一个优秀的开源调度框架，Quartz 具有以下特点：
1、强大的调度功能，例如支持丰富多样的调度方法，可以满足各种常规及特殊需求；
2、 灵活的应用方式，例如支持任务和调度的多种组合方式，支持调度数据的多种存储方式；
3、分布式和集群能力，Terracotta 收购后在原来功能基础上作了进一步提升。本文暂不讨论该部分内容。

作为 spring 默认的调度框架，Quartz 很容易与 Spring 集成实现灵活可配置的调度功能。

Quartz专用词汇：

1. scheduler ：任务调度器

2. trigger ：触发器，用于定义任务调度时间规则

3. job ：任务，即被调度的任务 misfire ：错过的，指本来应该被执行但实际没有被执行的任务调度

Quartz 核心元素关系图

job任务

package com.kaishengit;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class MyQuartzJob implements Job {

    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        System.out.println("Hi,Quartz!!!!!!!!!!!!!");
    }
}

triger 触发器

package com.kaishengit;

import org.quartz.*;
import org.quartz.impl.StdScheduler;
import org.quartz.impl.StdSchedulerFactory;

import java.util.Date;
import java.util.Timer;

public class Test {

    public static void main(String[] args) throws SchedulerException {

        /*Timer timer = new Timer();
        timer.schedule(new MyTimerTask(),0,5000);*/


        //任务
        JobDetail jobDetail = JobBuilder.newJob(MyQuartzJob.class).build();

        //创建触发器
        /*SimpleScheduleBuilder scheduleBuilder = SimpleScheduleBuilder.simpleSchedule();
        scheduleBuilder.withIntervalInSeconds(5);
        scheduleBuilder.repeatForever();*/
        // cron
        ScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule("1 35 14 5 8 ? 2016-2016");
        Trigger trigger = TriggerBuilder.newTrigger().withSchedule(scheduleBuilder).build();

        //创建调度器
        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.scheduleJob(jobDetail,trigger);
        scheduler.start();




    }
}

---

package com.toltech.phatent;

import java.util.Date;

import org.apache.commons.lang.time.DateUtils;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.Trigger.TriggerState;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

/**
 * QuartzCase
 * @author Wgs
 * @version 1.0
 * @since 2017年8月26日下午2:45:55
 */
public class QuartzCase {

    public static void main(String[] args) {
        try {
            JobDetail jobDetail = JobBuilder.newJob(TestJob.class)   // 任务执行类      
                    .withIdentity("job1_1", "jGroup1")// 任务名，任务组              
                    .build();
            Date date = new Date();
            date = DateUtils.addMinutes(date, 1);
            Trigger trigger =TriggerBuilder.newTrigger().withIdentity("trigger1","group1")  
                    .startAt(date).build();
            Scheduler scheduler=StdSchedulerFactory.getDefaultScheduler(); 
            scheduler.scheduleJob(jobDetail, trigger);   
            scheduler.start();
            while(true){
                TriggerState state = scheduler.getTriggerState(trigger.getKey());
                if(state == TriggerState.COMPLETE){
                    scheduler.pauseTrigger(trigger.getKey());// 停止触发器  
                    scheduler.unscheduleJob(trigger.getKey());// 移除触发器  
                    scheduler.deleteJob(trigger.getJobKey());
                    System.out.println("job cancel");
                    break;
                }
                Thread.sleep(3000L);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

---

Spring 3 调度器示例 —— JDK 定时器和 Quartz 展示 【已翻译100%】

与spring结合

创建任务

package com.kaishengit;

import javax.inject.Named;

@Named
public class MySpringJob {

    public void sayHello() {
        System.out.println("Hello,Spring~~~~~~~~~~~~~~~~~~~~~");
    }

}

applicationContext-quarz.xml

动态添加

动态添加

job包中的TaskRemindJob类

cron pom依赖时分秒转换成DateTime

      org.quartz-scheduler
      quartz
      2.2.2
    

    
      com.cronutils
      cron-utils
      4.1.0
    

---

job包中的TaskRemindJob类

package com.kaishengit.job;

import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class TaskRemindJob implements Job {
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        JobDataMap jobDataMap = context.getJobDetail().getJobDataMap();
        String title = (String) jobDataMap.get("context");
        System.out.println("提醒内容：" + title);
    }
}

---

package com.kaishengit.service;

import com.cronutils.builder.CronBuilder;
import com.cronutils.model.Cron;
import com.cronutils.model.CronType;
import static com.cronutils.model.field.expression.FieldExpressionFactory.*;
import com.cronutils.model.definition.CronDefinitionBuilder;
import com.cronutils.model.field.expression.On;
import com.kaishengit.job.TaskRemindJob;
import com.kaishengit.mapper.TaskMapper;
import com.kaishengit.pojo.Task;
import com.kaishengit.util.ShiroUtil;
import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.quartz.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;

import javax.inject.Inject;
import javax.inject.Named;
import java.util.List;

@Named
public class TaskService {

    @Inject
    private TaskMapper taskMapper;
    @Inject
    private SchedulerFactoryBean schedulerFactoryBean;

    private Logger logger = LoggerFactory.getLogger(TaskService.class);

    /**
     * 添加待办任务
     * @param task
     * @param hour
     * @param min
     */
    public void saveTask(Task task, String hour, String min) {
        if(StringUtils.isNotEmpty(hour) && StringUtils.isNotEmpty(min)) {
            String reminderTime = task.getStart() + " "+hour + ":" + min + ":00";
            logger.debug("提醒时间为{}" , reminderTime);

            task.setRemindertime(reminderTime);
            task.setUserid(ShiroUtil.getCurrentUserID());
            taskMapper.save(task);

            //TODO Quartz动态任务
            //yyyy-MM-dd HH:mm:ss -> DateTime
            DateTime dateTime = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss").parseDateTime(reminderTime);
            //datetime -> cron
            Cron cron = CronBuilder.cron(CronDefinitionBuilder.instanceDefinitionFor(CronType.QUARTZ))
                    .withYear(on(dateTime.getYear()))
                    .withMonth(on(dateTime.getMonthOfYear()))
                    .withDoM(on(dateTime.getDayOfMonth()))
                    .withHour(on(dateTime.getHourOfDay()))
                    .withMinute(on(dateTime.getMinuteOfHour()))
                    .withSecond(on(0))
                    .withDoW(questionMark()).instance();

            String cronExpress = cron.asString();
            logger.debug("CRON: {}",cronExpress);

            JobDetail jobDetail = JobBuilder
                    .newJob(TaskRemindJob.class)
                    .usingJobData("context",task.getTitle())
                    .withIdentity("task:"+task.getId(),"task")
                    .build();
            ScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpress);
            Trigger trigger = TriggerBuilder.newTrigger().withSchedule(scheduleBuilder).build();

            Scheduler scheduler = schedulerFactoryBean.getScheduler();
            try {
                scheduler.scheduleJob(jobDetail,trigger);
            } catch (SchedulerException e) {
                throw new RuntimeException(e);
            }


        } else {
            task.setUserid(ShiroUtil.getCurrentUserID());
            taskMapper.save(task);
        }
    }

    /**
     * 获取当前用户的所有任务
     * @return
     */
    public List findTaskByUserId(String start,String end) {
        return taskMapper.findByUserIdAndDateRanger(ShiroUtil.getCurrentUserID(),start,end);
    }

    /**
     * 获取当前用户已经超时的任务
     * @return
     */
    public List findTimeOutTasks() {
        String today = DateTime.now().toString("yyyy-MM-dd");
        return taskMapper.findTimeOutTask(ShiroUtil.getCurrentUserID(),today);
    }

    /**
     * 删除日程
     * @param id
     */
    public void delTask(Integer id) {
        taskMapper.del(id);
    }

    /**
     * 将日程设置为已完成
     * @param id
     */
    public Task doneTask(Integer id) {
        Task task = taskMapper.findById(id);
        task.setDone(true);
        task.setColor("#cccccc");
        taskMapper.update(task);
        return task;
    }
}