使用 Quartz 的动态作业数据

Question

当我的进程收到消息时，它需要启动一个计时器并在 X 秒内执行一些逻辑。这些作业需要存储在 JDBC 存储中，据我所知，这可能与这个问题无关。

根据我所读到的内容，我应该能够将具有相似属性的不同值的 JobDataMap 分配给单个 Job 类，但我无法找到任何文档或示例来支持此用例。也许我的谷歌能力很弱。

这有道理吗？有一个 Job 类并以某种方式存储 JobDataMap 来填充该 Job 类并在每条消息的基础上运行它？

Answer 1

org.quartz.Trigger 既有 getJobDataMap() （如有必要，它会new）和 setJobDataMap() > 获取触发器的 JobDataMap 。

最简单的用法是：

Trigger t = new SimpleTrigger(...);
t.getJobDataMap().put("foo", "bar");

使用现有的值映射进行初始化：

Map data = new HashMap();
data.put("foo", "bar");

t.setJobDataMap(new JobDataMap(data));

在作业执行时获取数据

public void execute(JobExecutionContext context) throws JobExecutionException
{
   String fooValue = context.getMergedJobDataMap().get("foo");
}

---

教程中有关 JobDataMap 的文档。

Answer 2

嗨cansando（你说西班牙语？？？）。
我将以 Quartz 为例。

public static void main(String[] args) {

        SchedulerFactory schedFact = new org.quartz.impl.StdSchedulerFactory();
        try {

            Scheduler sched;
            sched = schedFact.getScheduler();

            sched.start();

            JobDetail jobd = new JobDetail("instruccion", "instrucciones",
                    Mensaje.class);

//          TriggerExample trigger = new TriggerExample("instruccion",
//                  "instrucciones");

            jobd.setRequestsRecovery(true);
            SimpleTrigger trigger2 = new SimpleTrigger("lanzador principal", "lanzadores", "instruccion","instrucciones" , Calendar.getInstance().getTime(), null, 100, 10000);

            trigger2.setMisfireInstruction(SimpleTrigger.MISFIRE_INSTRUCTION_FIRE_NOW);
            sched.scheduleJob(jobd, trigger2);

            //      
            // }
        } catch (SchedulerException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    };


public class Mensaje implements Job {


    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        System.out.println("Hola Mundo");

    }

}


public class TriggerExample extends Trigger {

    /**
     * 
     */
    private static final long serialVersionUID = -4926331843008217753L;

    Date fechaAEjecutar;


    public TriggerExample(){

        super();
    }

    public TriggerExample(String name){
        super(name);
    }

    public TriggerExample(String name, String group){
        super(name, group);
    }

    public TriggerExample(String name, String group,String jobname, String jobgroup){
        super(name,group,jobname,jobgroup);
    }



    @Override
    public Date computeFirstFireTime(Calendar arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public int executionComplete(JobExecutionContext arg0,
            JobExecutionException arg1) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public Date getEndTime() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Date getFinalFireTime() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Date getFireTimeAfter(Date arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Date getNextFireTime() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Date getPreviousFireTime() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Date getStartTime() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public boolean mayFireAgain() {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void setEndTime(Date arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void setStartTime(Date arg0) {
        this.fechaAEjecutar = arg0;
        System.out.println("Cargue la fecha el data con valor\n");
        System.out.println(this.fechaAEjecutar.getTime());

    }

    @Override
    public void triggered(Calendar arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void updateAfterMisfire(Calendar arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void updateWithNewCalendar(Calendar arg0, long arg1) {
        // TODO Auto-generated method stub

    }

    @Override
    protected boolean validateMisfireInstruction(int arg0) {
        // TODO Auto-generated method stub
        return false;
    }

}

在此行中 SimpleTrigger trigger2 = new SimpleTrigger("lanzadorprincipal", "lanzadores", "instruccion","instrucciones" , Calendar.getInstance().getTime(), null, 100, 10000);

您可以设置执行和重复的时间吗？