cron详解参见：https://www.cnblogs.com/yaowen/p/3779284.html
cron总结
CronTrigger配置完整格式为7个： [秒] [分] [小时] [日] [月] [周] [年] ，一般为6个，省去最后那个年。举例："0/20 * * * * ?" 每20秒执行一次，无限期重复
| 序号 | 含义 | 默认 | 默认值含义 | 允许填写的值 | 允许的通配符 | 通配符举例 |
| 1 | 秒 | * | 每秒 | 0-59 | , - * / | 0/20 每20秒 |
| 2 | 分 | * | 每分 | 0-59 | , - * / | 10,20,30 第10、20、30分钟 |
| 3 | 小时 | * | 每小时 | 0-23 | , - * / | 8-17 上午8点到下午17点 |
| 4 | 日 | * | 每日 | 1-31 | , - * ? / L W | 1,15 月的1号和15号 6L 表示这个月的倒数第6天 "15W"，表示离每月15号最近的那个工作日触发。如果15号正好是周六，则找最近的周五(14号)触发, 如果15号是周未，则找最近的下周一(16号)触发.如果15号正好在工作日(周一至周五)，则就在该天触发。 |
| 5 | 月 | * | 每月 | 1-12 or JAN-DEC | , - * / | 2,4,6 2月4月和6月 JAN-DEC 1月到12月 |
| 6 | 周 | ？ | 每周 | 1-7 or SUN-SAT | , - * ? / L # | SUN-SAT 星期天到星期六 |
| 7 | 年 | 非必填 | 空 或 1970-2099 | , - * / |
任务类
1 /** 2 * 任务job 3 */ 4 public class SimpleJob implements Job { 5 6 private static Logger LOG = LoggerFactory.getLogger(SimpleJob.class); 7 8 // 必须要有public修饰的无参构造函数 9 public SimpleJob() { 10 } 11 12 // 任务执行方法 13 public void execute(JobExecutionContext context) throws JobExecutionException { 14 JobKey jobKey = context.getJobDetail().getKey(); //jobKey长这样：group1.job6 15 LOG.info("执行任务。SimpleJob says: " + jobKey + " executing at " + new Date()); 16 } 17 18 }
调度管理类
1 package org.quartz.examples.example3; 2 3 import static org.quartz.CronScheduleBuilder.cronSchedule; 4 import static org.quartz.JobBuilder.newJob; 5 import static org.quartz.TriggerBuilder.newTrigger; 6 7 import org.quartz.CronTrigger; 8 import org.quartz.JobDetail; 9 import org.quartz.Scheduler; 10 import org.quartz.SchedulerFactory; 11 import org.quartz.SchedulerMetaData; 12 import org.quartz.impl.StdSchedulerFactory; 13 import org.slf4j.Logger; 14 import org.slf4j.LoggerFactory; 15 16 import java.util.Date; 17 18 /** 19 * 这个示例将演示使用Cron触发器的Quartz的所有基本调度功能。 20 * 21 */ 22 public class CronTriggerExample { 23 Logger LOG = LoggerFactory.getLogger(CronTriggerExample.class); 24 25 /* 26 * 以下用到的cron总结： "0/20 * * * * ?" 每20秒执行一次 27 */ 28 public void run() throws Exception { 29 // 初始化一个调度工厂，并实例化一个调度类 30 SchedulerFactory sf = new StdSchedulerFactory(); 31 Scheduler sched = sf.getScheduler(); 32 33 JobDetail job = null; 34 CronTrigger trigger = null; 35 Date ft = null; 36 37 // ======================================================== 38 // ============ job1 每20秒执行一次，无限期重复 39 // ======================================================== 40 job = newJob(SimpleJob.class).withIdentity("job1", "group1").build(); 41 trigger = newTrigger().withIdentity("trigger1", "group1").withSchedule(cronSchedule("0/20 * * * * ?")).build(); 42 ft = sched.scheduleJob(job, trigger); 43 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 44 + trigger.getCronExpression()); 45 46 // ======================================================== 47 // ============ job2 将每隔2分钟运行一次(每分钟过后15秒) 48 // ======================================================== 49 job = newJob(SimpleJob.class).withIdentity("job2", "group1").build(); 50 trigger = newTrigger().withIdentity("trigger2", "group1").withSchedule(cronSchedule("15 0/2 * * * ?")).build(); 51 ft = sched.scheduleJob(job, trigger); 52 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 53 + trigger.getCronExpression()); 54 55 // ======================================================== 56 // ============ job3 将每隔一分钟运行一次，但只在上午8点到下午5点之间才运行 57 // ======================================================== 58 job = newJob(SimpleJob.class).withIdentity("job3", "group1").build(); 59 trigger = newTrigger().withIdentity("trigger3", "group1").withSchedule(cronSchedule("0 0/1 8-17 * * ?")) 60 .build(); 61 ft = sched.scheduleJob(job, trigger); 62 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 63 + trigger.getCronExpression()); 64 65 // ======================================================== 66 // ============ job4 每三分钟运行一次，但只在下午5点到11点之间运行 67 // ======================================================== 68 job = newJob(SimpleJob.class).withIdentity("job4", "group1").build(); 69 trigger = newTrigger().withIdentity("trigger4", "group1").withSchedule(cronSchedule("0 0/3 17-23 * * ?")) 70 .build(); 71 ft = sched.scheduleJob(job, trigger); 72 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 73 + trigger.getCronExpression()); 74 75 // ======================================================== 76 // ============ job5将在每月的第1天和第15天上午10点运行 77 // ======================================================== 78 job = newJob(SimpleJob.class).withIdentity("job5", "group1").build(); 79 trigger = newTrigger().withIdentity("trigger5", "group1").withSchedule(cronSchedule("0 0 10am 1,15 * ?")) 80 .build(); 81 ft = sched.scheduleJob(job, trigger); 82 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 83 + trigger.getCronExpression()); 84 85 // ======================================================== 86 // ============ job6 将每30秒运行一次，但仅限于工作日(周一至周五) 87 // ======================================================== 88 // job 6 will run every 30 seconds but only on Weekdays (Monday through Friday) 89 job = newJob(SimpleJob.class).withIdentity("job6", "group1").build(); 90 trigger = newTrigger().withIdentity("trigger6", "group1").withSchedule(cronSchedule("0,30 * * ? * MON-FRI")) 91 .build(); 92 ft = sched.scheduleJob(job, trigger); 93 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 94 + trigger.getCronExpression()); 95 96 // ======================================================== 97 // ============ job7 每30秒运行一次，但只在周末(周六和周日) 98 // ======================================================== 99 job = newJob(SimpleJob.class).withIdentity("job7", "group1").build(); 100 trigger = newTrigger().withIdentity("trigger7", "group1").withSchedule(cronSchedule("0,30 * * ? * SAT,SUN")) 101 .build(); 102 ft = sched.scheduleJob(job, trigger); 103 LOG.info(job.getKey() + " has been scheduled to run at: " + ft + " and repeat based on expression: " 104 + trigger.getCronExpression()); 105 106 // ==================================================================== 107 // ============ 启动调度器 108 // ==================================================================== 109 sched.start(); 110 111 try { 112 Thread.sleep(300L * 1000L); // 等待5分钟 113 } catch (Exception e) { 114 } 115 // 停止调度器 116 sched.shutdown(true); 117 // 显示调度器的一些统计信息 118 SchedulerMetaData metaData = sched.getMetaData(); 119 LOG.info("Executed " + metaData.getNumberOfJobsExecuted() + " jobs."); 120 } 121 122 public static void main(String[] args) throws Exception { 123 CronTriggerExample example = new CronTriggerExample(); 124 example.run(); 125 } 126 127 }