java quartz Scheduler 操作JobDetail

古城微笑少年丶 2022-11-01 05:26 133阅读 0赞

scheduler可以看成是一个容器,对`JobDetail`进行增删改查

//增

sched.addJob(job,false);// false表示不替换,ture表示替换,既更新;另外一般使用 比较方便sched.scheduleJob(job, trigger);

//查

System.out.println(sched.getJobDetail(JobKey.jobKey("job1","group1"))); //获得JobDetail
    System.out.println(sched.getJobGroupNames()); //获得所有分组名称
    System.out.println(sched.getJobKeys(GroupMatcher.groupEquals("group1"))); //获得分组下所有的JobKey

//改

// sched.addJob(job2,true); 用来更新job

//删

sched.deleteJob(JobKey.jobKey("job1","group1"));//删除job后trigger也会删除,trigger不能单独存在

完整代码

package com;
    
    
    import org.quartz.*;
    import org.quartz.impl.StdSchedulerFactory;
    import org.quartz.impl.matchers.GroupMatcher;
    
    import java.io.IOException;
    
    import static org.quartz.JobBuilder.newJob;
    import static org.quartz.TriggerBuilder.newTrigger;
    
    
    public class App { 
        public static class myJob implements Job { 
            @Override
            public void execute(JobExecutionContext context){ 
                System.out.println("hello");
            }
        }
    
        public static void main(String[] args) throws IOException, SchedulerException { 
            Scheduler sched = new StdSchedulerFactory().getScheduler();
    
            JobDetail job = newJob(myJob.class)
                    .withIdentity("job1", "group1") //设置job的名称和分组,以便后期的查找
                    .storeDurably() // 在使用scheduler.addJob 单独添加job(不指定trigger)时使用,因为框架的思想是只在执行时才创建对象,所以要指定durably
                    .build(); //build设计模式生成对象
    
            Trigger trigger = newTrigger()
                    .withIdentity("trigger1", "group1")
                    .forJob(JobKey.jobKey("job1","group1")) // 给单独添加的jobdetail添加触发器
                    .build();
    
            //增
            sched.addJob(job,false);// false表示不替换,ture表示替换,既更新;另外一般使用 比较方便sched.scheduleJob(job, trigger);
            //查
            System.out.println(sched.getJobDetail(JobKey.jobKey("job1","group1"))); //获得JobDetail
            System.out.println(sched.getJobGroupNames()); //获得所有分组名称
            System.out.println(sched.getJobKeys(GroupMatcher.groupEquals("group1"))); //获得分组下所有的JobKey
            //改
            // sched.addJob(job2,true); 用来更新job
            //删
            sched.deleteJob(JobKey.jobKey("job1","group1"));//删除job后trigger也会删除,trigger不能单独存在
            sched.start();
        }
    
    
    
    }

参考:  
http://www.quartz-scheduler.org/api/2.3.0/org/quartz/Scheduler.html

java quartz Scheduler 操作JobDetail

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