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定时任务schedule(quartz)

1, 简介
Quartz是一个任务调度框架。
核心类:
Scheduler  :调度器,所有Job的调度都是由它控制;
JobDetail   :生成Job对象的实例,存储Job对象需要的参数;
Job           :执行业务逻辑;
Trigger      :定义触发的条件;
帮助类
SimpleScheduleBuilder:用于构建Scheduler:
JobBuilder           :用于构建JobDetail:
TriggerBuilder       :用于构建Trigger;

2, 创建任务
public class Test
{
    public static void schedue() throws SchedulerException
    {
        // 调度器
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

        // 任务
        JobDetail job = JobBuilder.newJob(MyJob.class).withIdentity("job1", "group1").usingJobData("key", "value")
                .build();

        // 触发器
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1").startNow()
                .withSchedule(simpleSchedule().withIntervalInSeconds(40).repeatForever()).build();

        // 调度器关联任务JobDetail与触发器Trigger
        scheduler.scheduleJob(job, trigger);

        // 定时任务启动
        scheduler.start();
    }

    public class MyJob implements org.quartz.Job
    {

        /*
         * 具体的业务逻辑
         */
        @Override
        public void execute(JobExecutionContext context) throws JobExecutionException
        {
            JobDetail jobDetail = context.getJobDetail();
            // 获取参数
            JobDataMap jobDataMap = jobDetail.getJobDataMap();
            jobDataMap.get("key");

        }

    }

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

}

备注:
Jobkey     :JobDetail#getKey(),格式:group.name
TriggerKey : Trigger#getKey(),  格式:group.name



3, Cron表达式

例如:0 0 12 * * ?

4,其它
Maven依赖:
    <dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz</artifactId>
        <version>2.2.1</version>
    </dependency>
    <dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz-jobs</artifactId>
        <version>2.2.1</version>
    </dependency>

官网地址: http://www.quartz-scheduler.org/

定时任务schedule(quartz)