任务调度器控制job的执行、暂停和停止
scheduler:任务调度器
正常的job按照触发器设置的方式执行任务,我们可以通过Scheduler类来管理job的运行,暂停和停止。 例子一中的QuartzScheduleMgr就是对Scheduler类进行的封装。创建job时,会给job定义一个标识的字符串,
JobDetail job = newJob(HelloJobZ.class)
.withIdentity("jobtest1", "grouptest1")
.build();
通过标识jobtest1,grouptest1创建jobkey,
JobKey jobkey = new JobKey("jobtest1", "grouptest1");
获得jobkey以后可以通过scheduler控制job. 例如:
package com.xsoft.task;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.Scheduler;
import com.xsoft.core.quartz.QuartzScheduleMgr;
public class QuartzScheduleMain {
public static void main(String[] args) throws Exception {
Scheduler sched = QuartzScheduleMgr.getInstanceScheduler();
JobKey jobkey = new JobKey("jobtest1", "grouptest1");
sched.pauseJob(jobkey);
}
}
public static void main(String[] args) throws Exception {
Scheduler sched = QuartzScheduleMgr.getInstanceScheduler();
JobKey jobkey = new JobKey("jobtest1", "grouptest1");
sched.pauseJob(jobkey);
}
}
这里面需要说的是Scheduler这个类,Scheduler拥有一个SchedulerContext,它类似于ServletContext,保存着Scheduler上下文信息。除了pauseJob方法外,还有rescheduleJob,addJob,deleteJobs等方法。
下面是从任务控制器中获取所有的triggergroup和job的方法,在这里记录一下。
//从调度管理器中获取调度对象
SchedulerFactory schedulerFactory = new StdSchedulerFactory();
SchedulerFactory schedulerFactory = new StdSchedulerFactory();
Scheduler scheduler = schedulerFactory.getScheduler();
//①获取调度器中所有的触发器组
scheduler.getSchedulerName();
List<String> triggerGroups = scheduler.getTriggerGroupNames();
scheduler.getSchedulerName();
List<String> triggerGroups = scheduler.getTriggerGroupNames();
//②重新恢复在tgroup1组中,名为trigger1_1触发器的运行
for (int i = 0; i < triggerGroups.size(); i++) {
String s = (String)triggerGroups.get(i);
System.out.println("s===="+s);
}
for(String group: scheduler.getJobGroupNames()) {
// enumerate each job in group
System.out.println("group===="+group);
for(JobKey jobKey : scheduler.getJobKeys(GroupMatcher.jobGroupEquals(group))) {
System.out.println("Found job identified by: " + jobKey);
//scheduler.pauseJob(jobKey);//暂停job
scheduler.resumeJob(jobKey);//继续执行job
}
}
String s = (String)triggerGroups.get(i);
System.out.println("s===="+s);
}
for(String group: scheduler.getJobGroupNames()) {
// enumerate each job in group
System.out.println("group===="+group);
for(JobKey jobKey : scheduler.getJobKeys(GroupMatcher.jobGroupEquals(group))) {
System.out.println("Found job identified by: " + jobKey);
//scheduler.pauseJob(jobKey);//暂停job
scheduler.resumeJob(jobKey);//继续执行job
}
}