Quartz
Quartz 是一个功能丰富的开源作业调度库，可以集成到几乎任何 Java 应用程序中——从最小的独立应用程序到最大的电子商务系统。
入门案例
maven 引入
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.1</version>
</dependency>
建立 Task
package com.ryo.quartz.hello.job;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
public class MyJob implements Job {
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
System.err.println("Hello Quartz!");
}
}
测试代码
import com.ryo.quartz.hello.job.MyJob;
import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;
public class AppMain {
public static void main(String[] args) throws SchedulerException {
// define the job and tie it to our MyJob class
JobDetail job = JobBuilder.newJob(MyJob.class)
.withIdentity("job1", "group1")
.build();
// Trigger the job to run now, and then repeat every 5 seconds
Trigger trigger = TriggerBuilder.newTrigger()
.withIdentity("trigger1", "group1")
.startNow()
.withSchedule(SimpleScheduleBuilder.simpleSchedule()
.withIntervalInSeconds(5)
.repeatForever())
.build();
// Grab the Scheduler instance from the Factory
Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
// and start it off
scheduler.start();
// Tell quartz to schedule the job using our trigger
scheduler.scheduleJob(job, trigger);
}
}
运行结果
每 5S 执行一次我们的 Job
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Hello Quartz!
Hello Quartz!
Hello Quartz!
Hello Quartz!
