Spring Boot集成Quartz-动态任务管理

Quartz提供了一组丰富的API，来管理Job。

前言

当定时任务越来越多时，集中管理Job越有必要。Quartz提供了一组丰富的API，来管理Job。

Spring Boot 定时任务之Quartz中讲了Spring Boot怎么集成quartz，这里结合实际业务，参考网上一些经验，总结一下集成的一些坑。

动态任务管理

下面以官方的例子来说明一下这些常用的API。

定义Job实现类

public class ColorJob implements Job {
   
   

    public ColorJob() {
        // Instances of Job must have a public no-argument constructor.
    }

    public void execute(JobExecutionContext context)
            throws JobExecutionException {

        JobDataMap data = context.getMergedJobDataMap();
        System.out.println("someProp = " + data.getString("someProp"));
    }

}

定义JobDetail和Trigger。

// Define job instance
JobDetail job1 = newJob(ColorJob.class)
    .withIdentity("job1", "group1")
    .build();

// Define a Trigger that will fire "now", and not repeat
Trigger trigger1 = newTrigger()
    .withIdentity("trigger1", "group1")
    .startNow()
    .build();

新建

把Job添加到调度器sched中。

// Add the the job to the scheduler's store
sched.add(job1, trigger1);

更新

TriggerKey triggerKey = TriggerKey.triggerKey("job1", "group1");
// store, and set overwrite flag to 'true'  
scheduler.addJob(job1, true);
// tell the scheduler to remove the old trigger with the given key, and put the new one in its place
scheduler.rescheduleJob(triggerKey, trigger1);

删除

JobKey jobKey = JobKey.jobKey("job1", "group1");
scheduler.deleteJob(jobKey);

暂停

JobKey jobKey = JobKey.jobKey("job1", "group1");
scheduler.pauseJob(jobKey);

恢复

JobKey jobKey = JobKey.jobKey("job1", "group1");
scheduler.resumeJob(jobKey);

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