Quartz執行多作業
在這個例子中，我們將介紹如何通過Quartz API 多個作業。在Quartz調度框架中，每個作業將被連接到一個唯一的觸發，並且由調度器運行它。
P.S：在 Quartz 中，一個觸發器觸發多個作業是不可以的。
1. Quartz APIs
創建3個作業，JobA，JobB和JobC。
package com.yiibai.quartz;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
public class JobA implements Job {
@Override
public void execute(JobExecutionContext context)
throws JobExecutionException {
System.out.println("Job A is runing //every 5 seconds ");
}
}
package com.yiibai.quartz;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
public class JobB implements Job {
@Override
public void execute(JobExecutionContext context)
throws JobExecutionException {
System.out.println("Job B is runing");
}
}
package com.yiibai.quartz;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
public class JobC implements Job {
@Override
public void execute(JobExecutionContext context)
throws JobExecutionException {
System.out.println("Job C is runing");
}
}
使用QuartzAPI聲明上述3個作業，分配它們到特定觸發器並調度它。
package com.yiibai.quartz;
import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;
public class CronTriggerExample {
public static void main( String[] args ) throws Exception
{
JobKey jobKeyA = new JobKey("jobA", "group1");
JobDetail jobA = JobBuilder.newJob(JobA.class)
.withIdentity(jobKeyA).build();
JobKey jobKeyB = new JobKey("jobB", "group1");
JobDetail jobB = JobBuilder.newJob(JobB.class)
.withIdentity(jobKeyB).build();
JobKey jobKeyC = new JobKey("jobC", "group1");
JobDetail jobC = JobBuilder.newJob(JobC.class)
.withIdentity(jobKeyC).build();
Trigger trigger1 = TriggerBuilder
.newTrigger()
.withIdentity("dummyTriggerName1", "group1")
.withSchedule(
CronScheduleBuilder.cronSchedule("0/5 * * * * ?"))
.build();
Trigger trigger2 = TriggerBuilder
.newTrigger()
.withIdentity("dummyTriggerName2", "group1")
.withSchedule(
CronScheduleBuilder.cronSchedule("0/5 * * * * ?"))
.build();
Trigger trigger3 = TriggerBuilder
.newTrigger()
.withIdentity("dummyTriggerName3", "group1")
.withSchedule(
CronScheduleBuilder.cronSchedule("0/5 * * * * ?"))
.build();
Scheduler scheduler = new StdSchedulerFactory().getScheduler();
scheduler.start();
scheduler.scheduleJob(jobA, trigger1);
scheduler.scheduleJob(jobB, trigger2);
scheduler.scheduleJob(jobC, trigger3);
}
}
輸出結果如上：
Job A is runing //every 5 seconds
Job B is runing
Job C is runing
Job A is runing //every 5 seconds
Job B is runing
Job C is runing