要学习Quartz框架,首先大概了解了Quartz的基本知识后,在经过简单的例子入门,一步一个脚印的走下去。
下面介绍Quartz入门的示例,因为Quartz的存储方式分为RAM和JDBC,分别对这两种进行简单的说明。并附上代码!
首先须要添加Quartz的Jar包 ,我使用的是quartz.2.2.1版本!
Demo代码下载地址:quartz-studyjava
<!-- quartz --> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version>2.2.1</version> </dependency> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz-jobs</artifactId> <version>2.2.1</version> </dependency>
1:RAM方式
要测试RAMdemo的代码,请先删除demo中这个quartz.properties文件,或者重命名!不然会测试不成功!
(1):Jobmysql
package com.liuzhihu.learn; import java.util.Date; import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * * @author liuzhihu * */ public class RAMJob implements Job { private static Logger _log = LoggerFactory.getLogger(RAMJob.class); @Override public void execute(JobExecutionContext arg0) throws JobExecutionException { _log.info("Say hello to Quartz" + new Date()); } }
(2):RAMQuartzgit
package com.liuzhihu.learn; import java.util.Date; import org.quartz.JobBuilder; import org.quartz.JobDetail; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.SchedulerFactory; import org.quartz.SimpleScheduleBuilder; import org.quartz.Trigger; import org.quartz.TriggerBuilder; import org.quartz.impl.StdSchedulerFactory; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /*** * * @author liuzhihu * */ public class RAMQuartz { private static Logger _log = LoggerFactory.getLogger(RAMQuartz.class); public static void main(String[] args) throws SchedulerException { // 1.建立Scheduler的工厂 SchedulerFactory sf = new StdSchedulerFactory(); // 2.从工厂中获取调度器实例 Scheduler scheduler = sf.getScheduler(); // 3.建立JobDetail JobDetail jb = JobBuilder.newJob(RAMJob.class).withDescription("this is a ram job") // job的描述 .withIdentity("ramJob", "ramGroup") // job 的name和group .build(); // 任务运行的时间,SimpleSchedle类型触发器有效 long time = System.currentTimeMillis() + 3 * 1000L; // 3秒后启动任务 Date statTime = new Date(time); // 4.建立Trigger // 使用SimpleScheduleBuilder或者CronScheduleBuilder Trigger t = TriggerBuilder.newTrigger().withDescription("").withIdentity("ramTrigger", "ramTriggerGroup") .withSchedule(SimpleScheduleBuilder.simpleSchedule()) .startAt(statTime) // 默认当前时间启动 //.withSchedule(CronScheduleBuilder.cronSchedule("0/2 * * * * ?")) // 两秒执行一次 .build(); // 5.注册任务和定时器 scheduler.scheduleJob(jb, t); // 6.启动 调度器 scheduler.start(); _log.info("启动时间 : " + new Date()); } }
运行结果:
SimpleScheduleBuilder:github
CronScheduleBuilder:sql
2.JDBC方式数据库
使用jdbc方式,就要配置quartz.properties文件,而且在开始的时候在数据库中新增表!
我使用的数据库是mysql,数据库中表在quartz_demo里面有,须要的请在里面下载!
运行 tables_db2_v8.sql 这个文件。框架
#JDBC驱动 org.quartz.dataSource.qzDS.driver:com.mysql.jdbc.Driver org.quartz.dataSource.qzDS.URL:jdbc:mysql://localhost:3306/quartz_test org.quartz.dataSource.qzDS.user:root org.quartz.dataSource.qzDS.password:root org.quartz.dataSource.qzDS.maxConnection:10
(1)MyJobide
package com.liuzhihu.jdbctest; import java.text.SimpleDateFormat; import java.util.Date; import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /*** * * @author liuzhihu * */ public class MyJob implements Job { private static final Logger log = LoggerFactory.getLogger(MyJob.class); public void execute(JobExecutionContext context) throws JobExecutionException { log.info("MyJob is start .................."); log.info("Hello quzrtz " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss ").format(new Date())); log.info("MyJob is end ....................."); } }
(2)QuartzJdbcTest学习
package com.liuzhihu.jdbctest; import java.text.ParseException; import java.util.List; import org.quartz.CronTrigger; import org.quartz.JobBuilder; import org.quartz.JobDetail; import org.quartz.JobKey; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.SchedulerFactory; import org.quartz.SimpleScheduleBuilder; import org.quartz.SimpleTrigger; import org.quartz.Trigger; import org.quartz.TriggerBuilder; import org.quartz.impl.StdSchedulerFactory; /*** * * @author liuzhihu * */ public class QuartzJdbcTest { public static void main(String[] args) throws SchedulerException, ParseException { startSchedule(); // resumeJob(); } /** * 开始一个simpleSchedule()调度 */ public static void startSchedule() { try { // 一、建立一个JobDetail实例,指定Quartz JobDetail jobDetail = JobBuilder.newJob(MyJob.class) // 任务执行类 .withIdentity("job1_1", "jGroup1") // 任务名,任务组 .build(); // 触发器类型 SimpleScheduleBuilder builder = SimpleScheduleBuilder // 设置执行次数 .repeatSecondlyForTotalCount(5); // CronScheduleBuilder builder = // CronScheduleBuilder.cronSchedule("0/2 * * * * ?"); // 二、建立Trigger Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1_1", "tGroup1").startNow() .withSchedule(builder).build(); // 三、建立Scheduler Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler(); scheduler.start(); // 四、调度执行 scheduler.scheduleJob(jobDetail, trigger); try { Thread.sleep(60000); } catch (InterruptedException e) { e.printStackTrace(); } // 一分钟后,关闭调度器 scheduler.shutdown(); } catch (SchedulerException e) { e.printStackTrace(); } } /** * 从数据库中找到已经存在的job,并从新开户调度 */ public static void resumeJob() { try { SchedulerFactory schedulerFactory = new StdSchedulerFactory(); Scheduler scheduler = schedulerFactory.getScheduler(); JobKey jobKey = new JobKey("job1_1", "jGroup1"); List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey); // SELECT TRIGGER_NAME, TRIGGER_GROUP FROM {0}TRIGGERS WHERE // SCHED_NAME = {1} AND JOB_NAME = ? AND JOB_GROUP = ? // 从新恢复在jGroup1组中,名为job1_1的 job的触发器运行 if (triggers.size() > 0) { for (Trigger tg : triggers) { // 根据类型判断 if ((tg instanceof CronTrigger) || (tg instanceof SimpleTrigger)) { // 恢复job运行 scheduler.resumeJob(jobKey); } } scheduler.start(); } } catch (Exception e) { e.printStackTrace(); } } }
运行结果: 测试
控制台打印:
Cron和Simple类型,Simple类型的若是JobDetail没有设置.storeDurably(true),则job在运行完成以后会在数据库中删除!
原文地址:http://blog.csdn.net/u010648555/article/details/54863394