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Question

我在成功调度作业时遇到了一些问题而没有得到标题中提到的错误,具体来说: The job (CRAWLS.my_repos) referenced by the trigger does not exist. [See nested exception: org.quartz.JobPersistenceException: The job (CRAWLS.my_repos) referenced by the trigger does not exist.]

这里看一下代码......其中一切看起来都应该没问题.

runJob方法......需要注意的主要问题是它在这一行中失败了:m_scheduler.scheduleJob(trigger);方法的其余部分是存在的,以防其余部分有用.

public void runJob(JobInfo jobInfo, 
        com.lawson.search.spi.common.Properties jobProperties)
{
    try {
        JobDataMap jobDataMap = QuartzUtils.createJobDataMapFromLesProperties(jobProperties);
        if (jobExists(jobInfo)) {
            m_scheduler.triggerJob(jobKey(jobInfo.getName(), jobInfo.getGroup()), jobDataMap);
        } else {
            JobDetail job = QuartzUtils.createJobDetailFromJobInfo(jobInfo);
            Trigger trigger = newTrigger()
                .forJob(job)
                .withIdentity(getImmediateTriggerName(jobInfo))
                .build();
            m_scheduler.scheduleJob(trigger);
        }
    } catch (SchedulerException e) {
        String msg = "runJob: " + jobInfo;
        if (s_log.isDebugEnabled()) {
            s_log.debug(msg, e);
        }
        throw new JobSchedulerException(msg, e);
    }
}

该createJobDetailFromJobInfo()方法简单,但很重要:

static JobDetail createJobDetailFromJobInfo(JobInfo theJobInfo)
{
  JobDetail detail = newJob(QuartzJobAdapter.class)
    .withIdentity(theJobInfo.getName(), theJobInfo.getGroup())
    .storeDurably()
    .build();
  return detail;
}

我能想到的唯一另一个重要的方法是我getImmediateTriggerName()认为可能导致问题的方法......但我不知道为什么.

private String getImmediateTriggerName(JobInfo jobInfo)
{
    return jobInfo.getName() + "#" + jobInfo.getGroup() + ":" + System.currentTimeMillis();
}

任何帮助,将不胜感激.

Answer 1

尝试安排一份工作

// Schedule the job with the trigger 
m_scheduler.scheduleJob(job, trigger);

代替

m_scheduler.scheduleJob(trigger);

来自quartz-scheduler.org:

方法:在2.1.x中安排作业和操作方法:在2.2.x中安排作业

两个版本的代码相同

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

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

// Schedule the job with the trigger 
sched.scheduleJob(job, trigger);

无论如何,只有当quartz JobDetail在storeTrigger方法的触发器存储期间无法为触发器的jobkey 检索a时,才会抛出异常

if (retrieveJob(newTrigger.getJobKey()) == null) {
    throw new JobPersistenceException("The job ("
            + newTrigger.getJobKey()
            + ") referenced by the trigger does not exist.");
}

// add to triggers array
triggers.add(tw);

....

public JobDetail retrieveJob(JobKey jobKey) {
    synchronized(lock) {
        JobWrapper jw = jobsByKey.get(jobKey);
        return (jw != null) ? (JobDetail)jw.jobDetail.clone() : null;
    }
}

所以你的错误很奇怪,因为jobkey是先前在类中的forJob方法分配的TriggerBuilder

public TriggerBuilder<T> forJob(JobDetail jobDetail) {
    JobKey k = jobDetail.getKey();
    if(k.getName() == null)
        throw new IllegalArgumentException("The given job has not yet had a name assigned to it.");
    this.jobKey = k;
    return this;
}

尝试安排工作

m_scheduler.scheduleJob(job, trigger);

首先,如前所述,如果不起作用,您应该调试代码并检查作业键,如果您的键是正确的,可能问题不在您的代码中,并且是石英配置不匹配.