quartz一分钟教程 java任务调度

 quartz是干啥的？ 任务调度用的

任务调度是干啥的？就是在预定的时间做预定的事

1.在quart网站下最新的JAR包

2.建个项目，把quartz的JAR包加入到项目

3.新建一个任务

public class MyJob implements org.quartz.Job {@Overridepublic void execute(JobExecutionContext arg0) throws JobExecutionException {System.out.println("我被调用了");}}

4.开启任务：

public class StartSchedule {public static void main(String[] args) throws Exception {SchedulerFactory sf = new StdSchedulerFactory();Scheduler sched = sf.getScheduler();JobDetail job = new JobDetail("job1", "group1", MyJob.class);CronTrigger t = new CronTrigger("trigger1", "group1", "job1", "group1", "0/2 * * * * ?");sched.scheduleJob(job, t);sched.start();Thread.sleep(500000);sched.shutdown(true);}}

5.运行StartSchedule即可

其中：

"0/2 * * * * ?" 是cronExpression表达式

一共有7组数据组成，位与位之间用空间分隔

分别代表  “秒 分 时 日 月 周 年” 其中年是可以省略的，所以在例子中用了6组

 

 

官方的例子：

Examples

Here are some full examples:

Expression Meaning 0 0 12 * * ? Fire at 12pm (noon) every day 0 15 10 ? * * Fire at 10:15am every day 0 15 10 * * ? Fire at 10:15am every day 0 15 10 * * ? * Fire at 10:15am every day 0 15 10 * * ? 2005 Fire at 10:15am every day during the year 2005 0 * 14 * * ? Fire every minute starting at 2pm and ending at 2:59pm, every day 0 0/5 14 * * ? Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day 0 0/5 14,18 * * ? Fire every 5 minutes starting at 2pm andending at 2:55pm, AND fire every 5 minutes starting at 6pm and endingat 6:55pm, every day 0 0-5 14 * * ? Fire every minute starting at 2pm and ending at 2:05pm, every day 0 10,44 14 ? 3 WED Fire at 2:10pm and at 2:44pm every Wednesday in the month of March. 0 15 10 ? * MON-FRI Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday 0 15 10 15 * ? Fire at 10:15am on the 15th day of every month 0 15 10 L * ? Fire at 10:15am on the last day of every month 0 15 10 ? * 6L Fire at 10:15am on the last Friday of every month 0 15 10 ? * 6L Fire at 10:15am on the last Friday of every month 0 15 10 ? * 6L 2002-2005 Fire at 10:15am on every last friday of every month during the years 2002, 2003, 2004 and 2005 0 15 10 ? * 6#3 Fire at 10:15am on the third Friday of every month 0 0 12 1/5 * ? Fire at 12pm (noon) every 5 days every month, starting on the first day of the month. 0 11 11 11 11 ? Fire every November 11th at 11:11am.