quartz學習-quartz編碼方式實現定時任務簡例

niewj發表於2022-12-29
原文網址 : https://segmentfault.com/a/1190000043188855
quartz

[toc]

1. Job介面

package com.niewj;

import com.google.gson.Gson;
import org.quartz.*;

public class MyJob implements Job {

    Gson gson = new Gson();

    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        JobDetail jobDetail = jobExecutionContext.getJobDetail();
        // 傳資料
        JobKey jobKey = jobDetail.getKey();
        String description = jobDetail.getDescription();
        JobDataMap jobDataMap = jobDetail.getJobDataMap();

        StringBuffer buff = new StringBuffer();
        buff.append("jobKey=").append(gson.toJson(jobKey))
                .append("\t description=").append(description)
                .append("\t jobDataMap=").append(gson.toJson(jobDataMap));

        System.out.println(buff);
    }
}

2. main方法

package com.niewj;

import lombok.extern.slf4j.Slf4j;
import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;

@Slf4j
public class JobTest {

    public static void main(String[] args) throws SchedulerException {
        String cron = "*/5 * * * * ?";
        String identity = "1";
        String group = "g1";
        String desc = "JobDetail任務";

        // 傳給JobDetail的資料
        JobDataMap map = new JobDataMap();
        map.put("taskId", "1");
        map.put("instanceId", "100");

        // 1. 排程器
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
        scheduler.clear();
        scheduler.start();
        log.info("=================任務排程:排程器已啟動===================");

        // 2.定義觸發器
        //定義name/group
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity(identity, group)
                .startNow()
                .withSchedule(CronScheduleBuilder.cronSchedule(cron))
                .build();

        // 3.定義一個任務JobDetail
        //定義Job類為HelloJob類，這是真正的執行邏輯所在
        JobDetail jobDetail = JobBuilder.newJob(MyJob.class)
                //定義name/group
                .withIdentity(identity, group)
                .withDescription(desc)
                .usingJobData(map)
                .build();

        // 4. 使用排程器排程JobDetail, 使用trigger觸發
        scheduler.scheduleJob(jobDetail, trigger);
    }
}

3. 輸出

15:47:10.393 [main] INFO org.quartz.impl.StdSchedulerFactory - Using default implementation for ThreadExecutor
15:47:10.405 [main] INFO org.quartz.simpl.SimpleThreadPool - Job execution threads will use class loader of thread: main
15:47:10.430 [main] INFO org.quartz.core.SchedulerSignalerImpl - Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl
15:47:10.430 [main] INFO org.quartz.core.QuartzScheduler - Quartz Scheduler v.2.3.2 created.
15:47:10.431 [main] INFO org.quartz.simpl.RAMJobStore - RAMJobStore initialized.
15:47:10.433 [main] INFO org.quartz.core.QuartzScheduler - Scheduler meta-data: Quartz Scheduler (v2.3.2) 'DefaultQuartzScheduler' with instanceId 'NON_CLUSTERED'
  Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
  Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.

15:47:10.433 [main] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties'
15:47:10.433 [main] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler version: 2.3.2
15:47:10.434 [main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started.
15:47:10.434 [main] INFO com.niewj.JobTest - =================任務排程:排程器已啟動===================
15:47:10.434 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 0 triggers
15:47:10.489 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
15:47:10.493 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'g1.1', class=com.niewj.MyJob
15:47:10.569 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
15:47:10.569 [DefaultQuartzScheduler_Worker-1] DEBUG org.quartz.core.JobRunShell - Calling execute on job g1.1
jobKey={"name":"1","group":"g1"}     description=JobDetail任務     jobDataMap={"taskId":"1","instanceId":"100"}
15:47:15.009 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'g1.1', class=com.niewj.MyJob
15:47:15.010 [DefaultQuartzScheduler_Worker-2] DEBUG org.quartz.core.JobRunShell - Calling execute on job g1.1
15:47:15.010 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
jobKey={"name":"1","group":"g1"}     description=JobDetail任務     jobDataMap={"taskId":"1","instanceId":"100"}
15:47:20.013 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'g1.1', class=com.niewj.MyJob
15:47:20.013 [DefaultQuartzScheduler_Worker-3] DEBUG org.quartz.core.JobRunShell - Calling execute on job g1.1
15:47:20.014 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
jobKey={"name":"1","group":"g1"}     description=JobDetail任務     jobDataMap={"taskId":"1","instanceId":"100"}
{"taskId":"1","instanceId":"100"}

5秒鐘輸出一次

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