java在使用Quartz时无法创建JobDetail接口的实例

Question

这是我第一次使用石英。我正在试用一个打印“Hello World”的样本程序。但当我试着运行它时，我得到一个错误

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - org.quartz.JobDetail is abstract; cannot be instantiated at QuartzAppSimpleTrigger.main(QuartzAppSimpleTrigger.java:18)

当我在Netbeans中试用它时，它要求我实现JobDetail的所有抽象方法。 下面是我的代码示例

import java.util.Date;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleTrigger;
import org.quartz.impl.StdSchedulerFactory;

public class HelloSchedule {

    public HelloSchedule() throws Exception {
        SchedulerFactory sf = new StdSchedulerFactory();
        Scheduler sched = sf.getScheduler();
        sched.start();
        JobDetail jd = new JobDetail("myjob", sched.DEFAULT_GROUP, HelloJob.class);
        SimpleTrigger st = new SimpleTrigger("mytrigger", sched.DEFAULT_GROUP, new Date(),
                null, SimpleTrigger.REPEAT_INDEFINITELY, 60L * 1000L);
        sched.scheduleJob(jd, st);
    }

    public static void main(String args[]) {
        try {
            new HelloSchedule();
        } catch (Exception e) {
        }
    }
}

还有HelloJob。java是

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import java.util.Date;

public class HelloJob implements Job {

public void execute(JobExecutionContext arg0) throws JobExecutionException{

System.out.println("Hello World Quartz Scheduler: " + new Date());
}
}

Answer 1

您使用的石英版本不对^Quartz 1.x中的{}类被重构为JobDetail接口，使用Quartz 2.x中的org.quartz.impl.JobDetailImpl实现

您应该更换石英2。x和石英1。在类路径上使用x或更好地使用新2。x API