quartz定时器入门示例

最新推荐文章于 2019-11-30 17:39:30 发布

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本文介绍如何使用 Quartz 框架实现定时任务，包括创建作业和调度器的具体步骤，并提供完整的 Java 示例代码及 Maven 依赖配置。

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1.首先创建一个作业（Job）代码如下：

package quartz.yl;

import java.text.SimpleDateFormat;
import java.util.Date;

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

public class HelloQuartz implements Job{
    private SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        System.out.println(sdf.format(new Date())+"  hello Quartz");
    }

}

2.创建一个调度器（Schedule）来调度作业。代码如下：

package quartz.yl;

import java.text.SimpleDateFormat;

import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

public class HelloQuartzTest {

//  @Test
    public void test1() throws SchedulerException, InterruptedException {   
        SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        //创建调度器工厂
        SchedulerFactory scheFac = new StdSchedulerFactory();
        //获取调度器
        Scheduler sched=scheFac.getScheduler();
        //获取job实例
        JobDetail job = JobBuilder.newJob(HelloQuartz.class).withIdentity("job1","group1").build();

        Trigger trigger =TriggerBuilder.newTrigger().withIdentity("trriger1","group1")
                .withSchedule(CronScheduleBuilder.cronSchedule("0/5 * * * * ? "))
                .startNow().build();

        sched.scheduleJob(job, trigger);
        //启动调度
        sched.start();
        Thread.sleep(65L * 1000L);
        sched.shutdown();
        System.out.println(job.getKey() +" "+trigger.getKey()+ " 定时任务结束: "); 
    }

    public static void main(String[] args) throws SchedulerException, InterruptedException {
        HelloQuartzTest h =new HelloQuartzTest();
        h.test1();
    }
}

运行结果如下：
这里写图片描述

上述代码中需要的jar 可以下载jar包，也可以用maven 下载。如果用maven，pom文件参考下面代码：

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <springversion>4.3.7.RELEASE</springversion>
    <quartz.version>2.2.1</quartz.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${springversion}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${springversion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${springversion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${springversion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${springversion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${springversion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${springversion}</version>
        </dependency>

        <!-- sheduler -->
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>${quartz.version}</version>
        </dependency>

        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
  </dependencies>