Quartz是OpenSymphony开源组织在Job scheduling领域又一个开源项目,它可以与J2EE与J2SE应用程序相结合也可以单独使用。Quartz可以用来创建简单或为运行十个，百个，甚至是好几万个Jobs这样复杂的日程序表。Jobs可以做成标准的Java组件或 EJBs。Quartz的最新版本为Quartz 1.5.2。
实例：
package
example.quartz;
import
org.quartz.CronTrigger;
import
org.quartz.Job;
import
org.quartz.JobDetail;
import
org.quartz.JobExecutionContext;
import
org.quartz.JobExecutionException;
import
org.quartz.Scheduler;
import
org.quartz.SchedulerFactory;
import
java.util.Date;
/** */
/**
*
@author
kestrel
*/
/**/
/*
实现Job
*/
public
class
QuartzReport
implements
Job
{
/**/
/*
重载该函数
*/
public
void
execute(JobExecutionContext cntxt)
throws
JobExecutionException
{
System.out.println(
"
Generating report -
"
+
cntxt.getJobDetail().getJobDataMap().get(
"
type
"
)
+
new
Date());
}
public
static
void
main(String[] args)
{
try
{
SchedulerFactory schedFact
=
new
org.quartz.impl.StdSchedulerFactory();
Scheduler sched
=
schedFact.getScheduler();
sched.start();
JobDetail jobDetail
=
new
JobDetail(
"
Income Report
"
,
"
Report Generation
"
, QuartzReport.
class
);
jobDetail.getJobDataMap().put(
"
type
"
,
"
FULL
"
);
CronTrigger trigger
=
new
CronTrigger(
"
Income Report
"
,
"
Report Generation
"
);
/**/
/*
每1分钟执行一次
*/
trigger.setCronExpression(
"
0 0/1 * * * ?
"
);
sched.scheduleJob(jobDetail, trigger);
}
catch
(Exception e)
{
e.printStackTrace();
}
}
}
Quartz的配置文件：quartz.properties
# Configure Main Scheduler Properties
org.quartz.scheduler.instanceName = TestScheduler
org.quartz.scheduler.instanceId = one
# Configure ThreadPool
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 5
org.quartz.threadPool.threadPriority = 4
# Configure JobStore
org.quartz.jobStore.misfireThreshold = 5000
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
附：cronExpression配置说明
|
字段
|
允许值
|
允许的特殊字符
|
|
秒
|
0-59
|
, - * /
|
|
分
|
0-59
|
, - * /
|
|
小时
|
0-23
|
, - * /
|
|
日期
|
1-31
|
, - * ? / L W C
|
|
月份
|
1-12 或者 JAN-DEC
|
, - * /
|
|
星期
|
1-7 或者 SUN-SAT
|
, - * ? / L C #
|
|
年（可选）
|
留空, 1970-2099
|
, - * /
|