Java 使用Quartz计划作业
我刚刚开始学习Quartz调度,在第一步中我面临着一些问题。Java 使用Quartz计划作业,java,scheduled-tasks,quartz-scheduler,Java,Scheduled Tasks,Quartz Scheduler,我刚刚开始学习Quartz调度,在第一步中我面临着一些问题。 我在它的主要网站上查看它的例子,但是当我试图在我的工作区中开发它时,它给了我错误 package testing.quartz.scheduler; import java.util.Date; import java.util.logging.Logger; import org.quartz.JobDetail; import org.quartz.Scheduler; import o
我在它的主要网站上查看它的例子,但是当我试图在我的工作区中开发它时,它给了我错误
package testing.quartz.scheduler;
import java.util.Date;
import java.util.logging.Logger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.impl.StdSchedulerFactory;
public class TesterMain {
/**
* @param args
*/
public void run() throws Exception {
// First we must get a reference to a scheduler
SchedulerFactory sf = new StdSchedulerFactory();
Scheduler sched = sf.getScheduler();
// computer a time that is on the next round minute
Date runTime = evenMinuteDate(new Date());<--Here its giving me error
// define the job and tie it to our HelloJob class
JobDetail job = newJob(HelloJob.class)<--Here its giving me error
.withIdentity("job1", "group1")
.build();
// Trigger the job to run on the next round minute
Trigger trigger = newTrigger()<--Here its giving me error
.withIdentity("trigger1", "group1")
.startAt(runTime)
.build();
// Tell quartz to schedule the job using our trigger
sched.scheduleJob(job, trigger);
// Start up the scheduler (nothing can actually run until the
// scheduler has been started)
sched.start();
// wait long enough so that the scheduler as an opportunity to
// run the job!
try {
// wait 65 seconds to show job
Thread.sleep(65L * 1000L);
// executing...
} catch (Exception e) {
}
// shut down the scheduler
sched.shutdown(true);
}
public static void main(String[] args) throws Exception {
TesterMain example = new TesterMain();
example.run();
}
}
package testing.quartz.scheduler;
导入java.util.Date;
导入java.util.logging.Logger;
导入org.quartz.JobDetail;
导入org.quartz.Scheduler;
导入org.quartz.SchedulerFactory;
导入org.quartz.Trigger;
导入org.quartz.impl.StdSchedulerFactory;
公共类测试员{
/**
*@param args
*/
public void run()引发异常{
//首先,我们必须获得对调度程序的引用
SchedulerFactory sf=新StdSchedulerFactory();
调度程序sched=sf.getScheduler();
//计算机是下一轮的时间
日期运行时间=evenMinuteDate(新日期());
evenMinuteDate
方法没有在任何地方声明
JobDetail job = newJob(HelloJob.class);
HelloJob类未导入,并且在new
和Job
Trigger trigger = newTrigger()
您在new
和Trigger()
之间缺少一个空格,因为您忘记导入正确的类。
这可能会解决这个问题:
import static org.quartz.DateBuilder.*;
import static org.quartz.JobBuilder.*;
import static org.quartz.TriggerBuilder.*;
将这些类导入到您的类。不应该有空格。如果添加“Import static org.quartz.JobBuilder.newJob;”,它将编译
import static org.quartz.DateBuilder.*;
import static org.quartz.JobBuilder.*;
import static org.quartz.TriggerBuilder.*;
import static org.quartz.JobBuilder.newJob;
import static org.quartz.SimpleScheduleBuilder.simpleSchedule;
import static org.quartz.TriggerBuilder.newTrigger;
import static org.quartz.DateBuilder.evenMinuteDate;