使用Quartz编写定时任务

最新推荐文章于 2024-08-12 14:10:23 发布

skye-深蓝

最新推荐文章于 2024-08-12 14:10:23 发布

阅读量301

点赞数

分类专栏： java

java 专栏收录该内容

9 篇文章

订阅专栏

【原创链接】https://blog.youkuaiyun.com/evankaka/article/details/45361759（所有的原理请参考此处，以下只是把代码搬运了一遍）

编辑工具：idea

工程类型：Maven工程

步骤如下：

1.pom.xml引入Quartz包

<!-- https://mvnrepository.com/artifact/org.quartz-scheduler/quartz -->
<dependency>
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz</artifactId>
    <version>2.3.0</version>
</dependency>

2.编写JOB类 HelloQuartzJob

import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import org.quartz.Job;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;


import java.util.Date;

public class HelloQuartzJob implements Job {
    //此处Log 对应的包 import org.apache.commons.logging.Log;  LogFactory对应的包import org.apache.commons.logging.LogFactory;
    static Log logger = LogFactory.getLog(HelloQuartzJob.class);
    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        System.out.println("Hello,Quartz! -executing its JOB at" + new Date() + "by" + jobExecutionContext.getTrigger().getCalendarName());
        //取得job详情
        JobDetail jobDetail = jobExecutionContext.getJobDetail();
        //取得job名称
        String jobName = jobDetail.getClass().getName();
        logger.info("job的Name" + jobDetail.getClass().getSimpleName());
        //取得job的类
        logger.info("Job Class" + jobDetail.getJobClass());
        //获取job开始时间
        logger.info(jobName + "fired at" + jobExecutionContext.getFireTime());
        logger.info("Next fire time" + jobExecutionContext.getNextFireTime());



    }
}

3.编写Scheduler类 HelloQuartzSch

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

import static org.quartz.JobBuilder.*;

public class HelloQuartzSch {

    public static void main(String[] args)throws SchedulerException {
        //创建一个JobDetail实例，置顶Quartz
        JobDetail jobDetail = JobBuilder.newJob(HelloQuartzJob.class).withIdentity("job_1","job_group_1").build();//job_1 任务名 job_group_1任务组
        //创建trigger
//        SimpleScheduleBuilder builder = SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(30).withRepeatCount(5);//withIntervalInSeconds设置间隔执行时间，withRepeatCount设置重复执行的次数，实际的执行次数等N+1
        SimpleScheduleBuilder builder = SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(10).repeatForever();//withIntervalInSeconds设置间隔执行时间，repeatForever永远执行
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger_1","trigger_group_1").startNow().withSchedule(builder).build();
        //创建Scheduler
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
        //调度执行
        scheduler.scheduleJob(jobDetail,trigger);
        scheduler.start();




    }
    /**
     *
     * Error running 'HelloQuartzSch': Command line is too long. Shorten command line for HelloQuartzSch or also for Application default configuration
     * */
}