[java]quartz开源任务调度框架

秒速五厘米 2022-05-18 03:09 338阅读 0赞

1.什么是quartz?  
[quartz百度百科][quartz]  
quartz是一种较为成熟的开源任务调度框架,大致有四部分组成Job,JobDetail,Triagger(触发),Schedule(调度)  
思路就是 触发事件—>调度(核心)—>执行任务

2.java样例  
导入pom依赖

<dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz</artifactId>
        <version>2.3.0</version>
        </dependency>

package com.dongshuo.test.cronjob;
    
    import org.quartz.Job;
    import org.quartz.JobExecutionContext;
    import org.quartz.JobExecutionException;
    
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    /** * @author dongshuo * @data 2018/7/27 14:24 * @Description quartz 由4大部分组成 job jobdetail schedule trigger(触发) */
    public class QuartzJob implements Job{ 
        @Override
        public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
            System.out.println("QuartzJob start");
            //业务逻辑
            StringBuilder sb = new StringBuilder("任务开始执行啦" + Thread.currentThread().getName());
            Date date = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            sb.append(sdf.format(date));
            System.out.println(sb);
            System.out.println("QuartzJob end");
        }
    }

package com.dongshuo.test.cronjob;
    
    import org.quartz.*;
    import org.quartz.impl.StdSchedulerFactory;
    
    /** * @author dongshuo * @data 2018/7/27 14:41 * @Description */
    public class QuarzSchedule { 
        public static void main(String[] args) throws SchedulerException {
            //构造JobDetail 绑定业务逻辑QuartzJob.class
            JobDetail jobDetail = JobBuilder.newJob(QuartzJob.class).build();
            //创建一个Trigger触发器的实例，定义该job立即执行，并且每2秒执行一次，一直执行
            SimpleTrigger trigger = TriggerBuilder.newTrigger()
                    .withIdentity("myTrigger").startNow()
                    .withSchedule(SimpleScheduleBuilder.simpleSchedule()
                            .withIntervalInSeconds(2).repeatForever()).build();
            //每日的9点40触发任务
            CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("cronTrigger")
                    .withSchedule(CronScheduleBuilder.cronSchedule("0 40 9 * * ? ")).build();
            //创建schedule实例
            StdSchedulerFactory factory = new StdSchedulerFactory();
            Scheduler scheduler = factory.getScheduler();
            scheduler.start();
            scheduler.scheduleJob(jobDetail,trigger);
        }
    }

以上内容实现了最简单的使用

3.结合Spring

<bean id ="myJobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
            
            <property name ="jobClass" value="com.zx.quartz.MyJob" />
            
            <property name="name" value="myJob" />
            
            <property name="group" value="jobs" />
            
            <property name="durability" value="true"/>
            
            <property name="applicationContextJobDataKey" value="applicationContext"/>
        </bean>
    
        
    
        
        <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
            <property name="jobDetail" ref="myJobDetail" />
            
            <property name="cronExpression" value="0/5 * * * * ?" />
        </bean>
    
        
        <bean id="cronTrigger2" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
            <property name="jobDetail" ref="myJobDetail" />
            
            <property name="cronExpression" value="0 */1 * * * ?" />
        </bean>
    
        
        <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
            <property name="triggers">
                <list>
                    <ref bean="cronTrigger" />
                    <ref bean="cronTrigger2" />
                </list>
            </property>
        </bean>

[quartz]: https://baike.baidu.com/item/quartz/3643055