我是Spring-boot(版本1.3.6)和Quartz的新手,我想知道使用Spring-scheduler创建任务有什么区别:
@Scheduled(fixedRate = 40000)
public void reportCurrentTime() {
System.out.println("Hello World");
}
0. Create sheduler.
1. Job which implements Job interface.
2. Create JobDetail which is instance of the job using the builder org.quartz.JobBuilder.newJob(MyJob.class)
3. Create a Triger
4. Finally set the job and the trigger to the scheduler
在代码中:
public class HelloJob implements Job {
public HelloJob() {
}
public void execute(JobExecutionContext context)
throws JobExecutionException
{
System.err.println("Hello!");
}
}
和sheduler:
SchedulerFactory schedFact = new org.quartz.impl.StdSchedulerFactory();
Scheduler sched = schedFact.getScheduler();
sched.start();
// define the job and tie it to our HelloJob class
JobDetail job = newJob(HelloJob.class)
.withIdentity("myJob", "group1")
.build();
// Trigger the job to run now, and then every 40 seconds
Trigger trigger = newTrigger()
.withIdentity("myTrigger", "group1")
.startNow()
.withSchedule(simpleSchedule()
.withIntervalInSeconds(40)
.repeatForever())
.build();
// Tell quartz to schedule the job using our trigger
sched.scheduleJob(job, trigger);
Quartz是否提供了更灵活的方式来定义作业,触发器和调度程序,还是Spring Scheduler还有其他更好的方法?
答案 0 :(得分:14)
Spring Scheduler是一个抽象层,用于隐藏不同JDK中Executors的实现,如Java SE 1.4,Java SE 5和Java EE环境,它们都有自己的特定实现。
Quartz Scheduler是一个完全成熟的调度框架,它允许基于CRON或简单的定期任务执行。
Spring Scheduler确实以Trigger
的形式提供与Quartz调度程序的集成,以使用Quartz调度程序的全部功能。
在不直接使用Quartz Scheduler特定类的情况下使用Spring Scheduler的优点是抽象层提供了灵活性和松散耦合。