Quartz定时任务组件

官网：http://www.quartz-scheduler.org/ 

1）job - 任务 - 你要做什么事？

2）Trigger - 触发器 - 做什么事，什么时候触发，可以传入任务

3）Scheduler - 任务调度 - 可以传入多个触发器进行任务调度

 SpringBoot整合Quartz框架

添加Quartz依赖:

  <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-quartz</artifactId></dependency>

1. 自定义一个Job

package com.by.quartz;import org.springframework.stereotype.Component;import java.util.Date;@Component
public class QuartzDemo {//任务public void printTime(){System.out.println("现在时刻："+new Date());}
}

1. 编写quartz配置类

package com.by.config;import com.by.quartz.QuartzDemo;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.quartz.CronTriggerFactoryBean;
import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;@Configuration
public class QuartzConfig {@Bean //job:干什么事public MethodInvokingJobDetailFactoryBean methodInvokingJobDetailFactoryBean(QuartzDemo quartzDemo){MethodInvokingJobDetailFactoryBean JobDetailFactoryBean = new MethodInvokingJobDetailFactoryBean();JobDetailFactoryBean.setTargetObject(quartzDemo);JobDetailFactoryBean.setTargetMethod("printTime");return JobDetailFactoryBean;}@Bean //trigger:什么时候干什么事public CronTriggerFactoryBean cronTriggerFactoryBean(MethodInvokingJobDetailFactoryBean JobDetailFactoryBean){CronTriggerFactoryBean cronTriggerFactoryBean = new CronTriggerFactoryBean();cronTriggerFactoryBean.setCronExpression("0/5 * * * * ?");cronTriggerFactoryBean.setJobDetail(JobDetailFactoryBean.getObject());return cronTriggerFactoryBean;}@Bean //scheduler:调度public SchedulerFactoryBean schedulerFactoryBean(CronTriggerFactoryBean cronTriggerFactoryBean){SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();schedulerFactoryBean.setTriggers(cronTriggerFactoryBean.getObject());return schedulerFactoryBean;}
}

1. 启动启动类

package com.by;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
@MapperScan("com.by.mapper")
public class IcanBackendApp {public static void main(String[] args) {SpringApplication.run(IcanBackendApp.class,args);}
}

结果 ：运行启动类，观察控制台，可以发现每隔5秒会输出一次，说明每隔1秒自定义 Job被调用一次。