Quartz基础知识了解（一）

一、QuartZ是什么？

二、获取

三、核心接口

• Scheduler - 与调度程序交互的主要API。
• Job - 由希望由调度程序执行的组件实现的接口。
• JobDetail - 用于定义作业的实例。
• Trigger（即触发器） - 定义执行给定作业的计划的组件。
• JobBuilder - 用于定义/构建JobDetail实例，用于定义作业的实例。
• TriggerBuilder - 用于定义/构建触发器实例。

四、触发器Tigger

1、SimpleTrigger

2、CronTrigger

3、Cron Expressions

4、Cron生成表达式工具

百度查

5、入门案例

package com.yiibai.common;

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

public class HelloJob implements Job {

    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        System.out.println("Hello Quartz!");
    }

}

package com.yiibai.quartz;

import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.SimpleTrigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

import com.yiibai.common.HelloJob;

public class SimpleTriggerExample {

    public static void main(String[] args) throws Exception {

        //创建job
        JobDetail job = JobBuilder.newJob(HelloJob.class)
                                    .withIdentity("bky_lzw", "group1").build();

        //创建调度器
        SimpleTrigger trigger = TriggerBuilder.newTrigger()
                        .withIdentity("bky_lzw", "group1")
                        .withSchedule(
                                SimpleScheduleBuilder.simpleSchedule()
                                    .withIntervalInSeconds(5)
                                    .repeatForever()
                                )
                        .build();

        //schedult执行
        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();
        scheduler.scheduleJob(job, trigger);

    }
}

package com.yiibai.quartz;

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

import com.yiibai.common.HelloJob;

public class CronTriggerExample {

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

        JobDetail job = JobBuilder.newJob(HelloJob.class)
                .withIdentity("bky_lzw", "group1").build();

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

        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();
        scheduler.scheduleJob(job, trigger);

    }

}