我在成功安排作业时遇到了一些麻烦,但没有出现标题中提到的错误,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.]
看一下代码...其中,一切似乎都应该没问题。
runJob 方法...需要注意的主要事情是它在这一行中失败了:
m_scheduler.scheduleJob(trigger);
该方法的其余部分在那里,以防它的其余部分有用。
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);
}
}
createJobDetailFromJobInfo()
方法很简单,但很重要:
static JobDetail createJobDetailFromJobInfo(JobInfo theJobInfo)
{
JobDetail detail = newJob(QuartzJobAdapter.class)
.withIdentity(theJobInfo.getName(), theJobInfo.getGroup())
.storeDurably()
.build();
return detail;
}
我能想到的唯一其他重要方法是
getImmediateTriggerName()
方法,我认为它可能会导致问题......但我不知道为什么。
private String getImmediateTriggerName(JobInfo jobInfo)
{
return jobInfo.getName() + "#" + jobInfo.getGroup() + ":" + System.currentTimeMillis();
}
如有任何帮助,我们将不胜感激。
尝试使用
安排作业// Schedule the job with the trigger
m_scheduler.scheduleJob(job, trigger);
而不是
m_scheduler.scheduleJob(trigger);
来自 quartz-scheduler.org :
操作方法: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,只有在
JobDetail
方法的触发器存储期间,quartz 无法检索触发器作业密钥的
storeTrigger
时,才会引发异常
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;
}
}
所以你的错误非常奇怪,因为作业密钥之前是在
forJob
类中的 TriggerBuilder
方法中分配的
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;
}
尝试用
安排作业m_scheduler.scheduleJob(job, trigger);
首先按照之前的建议,如果不起作用,您应该调试代码并检查作业密钥,如果您的密钥正确,则问题可能不在您的代码中,而是石英配置不匹配。
当我收到此错误时,这是因为我使用 myJobClass.getClass() 注册了作业,但我在类周围包装了一个拦截器,因此类名不匹配(即运行时类是...$$EnhancerByGuice$$13db15) 。 Spring 可能会发生类似的情况。