java quartz TriggerBuilder

冷不防 2022-11-01 05:23 6阅读 0赞

TriggerBuilder主要用来创建触发器,触发器必须要绑定job才有效

1.`trigger`的jobdata和`jobdtail`对象的是独立,不是一个

package com;
    
    
    import org.quartz.*;
    import org.quartz.impl.StdSchedulerFactory;
    
    import java.io.IOException;
    
    import static org.quartz.JobBuilder.newJob;
    import static org.quartz.TriggerBuilder.newTrigger;
    
    
    public class clroja { 
        public static class myJob implements Job { 
            @Override
            public void execute(JobExecutionContext context){ 
                JobDataMap jobDataMap = context.getJobDetail().getJobDataMap();
                System.out.println(jobDataMap.getString("key1"));
                JobDataMap jobDataMap1 = context.getTrigger().getJobDataMap();
                System.out.println(jobDataMap1.getString("key2"));
            }
        }
    
        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
                    .usingJobData("key1","value1") // 使用JobData向job中传递参数
                    .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
                    .withDescription("new job") // 添加注释,一般不用
                    .build(); //build设计模式生成对象
    
            Trigger trigger = newTrigger()
                    .withIdentity("trigger1", "group1")
                    .usingJobData("key2","value2") //和JobData不是同一个对象
                    .forJob(JobKey.jobKey("job1","group1")) // 给单独添加的jobdetail添加触发器
                    .startAt(DateBuilder.futureDate(1,DateBuilder.IntervalUnit.SECOND)) // 还有便捷的方法startNow(),一般用于测试 DateBuilder另有文章说明
                    .endAt(DateBuilder.futureDate(5,DateBuilder.IntervalUnit.SECOND)) // 关闭出发器,停止任务
                    .withSchedule(SimpleScheduleBuilder.simpleSchedule().repeatForever().withIntervalInSeconds(1))
                    .withPriority(1)//设置优先级
                    .withDescription("new trigger")
                    .build();
            sched.scheduleJob(job, trigger);
            sched.start();
        }
    
    
    
    }

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