初识Quartz(入门案例)+常用的Cron表达式

1.Quartz架构图

初识Quartz(入门案例)+常用的Cron表达式

1.实体层

package cn.happy.entity;
//1.
public class Plan {
//时间
private String date; //任务
private String task; public Plan(String date, String task) {
this.date = date;
this.task = task;
} public Plan() {
} @Override
public String toString() {
return "Plan [date=" + date + ", task=" + task + "]";
} public String getDate() {
return date;
} public void setDate(String date) {
this.date = date;
} public String getTask() {
return task;
} public void setTask(String task) {
this.task = task;
} }

Plan实体类

2.服务层

初识Quartz(入门案例)+常用的Cron表达式

package cn.happy.service;

import java.util.ArrayList;
import java.util.List;
//2.
import cn.happy.entity.Plan; public class RemindService {
//0.2用来打印集合中提醒内容的方法
public void printMessage(){
List<Plan> list=getPlasnForToday();
for(Plan plan : list){
//单个的plan
System.out.println("计划的时间"+plan.getDate()+"\t计划内容:"+plan.getTask());
}
} //创建一个集合,并且方法返回值是一个集合类型
public List<Plan> getPlasnForToday(){
List<Plan> list=new ArrayList<Plan>();
Plan plan1=new Plan("2016年12月17日","月底可以买回家的车票!");
Plan plan2=new Plan("2016年12月19日","webservice");
list.add(plan2);
list.add(plan1);
return list;
} }

RemindService

3.任务类的定义RemindJob implements Job

初识Quartz(入门案例)+常用的Cron表达式

package cn.happy.quartz;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException; import cn.happy.service.RemindService; //让一个普通类变成计划
public class RemindJob implements Job{
//植入service 对象
private RemindService service=new RemindService();
@Override
public void execute(JobExecutionContext context)throws JobExecutionException{
service.printMessage(); } public RemindService getService() {
return service;
} public void setService(RemindService service) {
this.service = service;
}
}

RemindJob

3.在Test类中综合咱们的计划和触发器

初识Quartz(入门案例)+常用的Cron表达式

调度器≈Job+trigger

初识Quartz(入门案例)+常用的Cron表达式

初识Quartz(入门案例)+常用的Cron表达式

package cn.happy.test;

import java.util.Date;

import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory; import cn.happy.quartz.RemindJob; public class MyQuertzTest {
public static void tool() throws SchedulerException,InterruptedException{
//第一步构建Job
JobDetail job=JobBuilder.newJob(RemindJob.class)//
.withIdentity("job1","group1")//
.build(); //第二步构建Trigger
/*Date runTime=DateBuilder.evenMinuteDate(new Date(System.currentTimeMillis()));
Trigger trigger=TriggerBuilder.newTrigger().withIdentity("trigger1","group1")//
.startAt(runTime).build();//系统当前时间的下一分钟打印一次*/ /*Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity("myTrigger","myTriggerGroup")//
.withSchedule(CronScheduleBuilder.cronSchedule("0 01 09 ? * 1#3 2016")).build();*/ /*//在系统时间一分钟后打印一次
Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity(TriggerKey.triggerKey("myTrigger","myTriggerGroup"))//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInMinutes(1)
.repeatForever())//
.startAt(new Date(System.currentTimeMillis()+2000))//
.build();*/ /*//1.3系统当前时间开始每两秒钟打印一次
Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity(TriggerKey.triggerKey("myTrigger","myTriggerGroup"))//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInSeconds(2)//2秒出现一次
.repeatForever()//
)//
.startAt(new Date(System.currentTimeMillis()))//
.build();*/ /*Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity(TriggerKey.triggerKey("myTrigger","myTriggerGroup"))//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInSeconds(2)//2秒出现一次
)//
.startAt(new Date(System.currentTimeMillis()+2000))//
.build();*/ /*Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity(TriggerKey.triggerKey("myTrigger","myTriggerGroup"))//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInMilliseconds(2)//两毫秒出现一次
.repeatForever())//
.startAt(new Date(System.currentTimeMillis()+2000))//
.build();*/ /*//隔5秒打印一次
Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity("myTrigger","myTriggerGroup")//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInSeconds(5)//
.repeatForever())
.startAt(new Date())//
.build();*/ //隔5秒打印一次
Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity("myTrigger","myTriggerGroup")//
.withSchedule(CronScheduleBuilder.cronSchedule("0 0 10 ? * 6L"))//每月最后一个星期五10:00运行
.startAt(new Date())//
.build(); /*Trigger trigger=TriggerBuilder.newTrigger()//
.withIdentity(TriggerKey.triggerKey("myTrigger","myTriggerGroup"))//
.withSchedule(SimpleScheduleBuilder.simpleSchedule()//
.withIntervalInSeconds(2)//
)//
.startAt(new Date(System.currentTimeMillis()+2000))//
.build();//需要放开第三步中注释的两行 运行完毕后服务也停止了*/ //第三步绑定 Job 和 Trigger
SchedulerFactory sf=new StdSchedulerFactory();
Scheduler sched=sf.getScheduler();
sched.scheduleJob(job,trigger);
sched.start();
//Thread.sleep(3000);//睡眠3秒钟
//sched.shutdown();//停止
} public static void main(String[] args) throws SchedulerException ,InterruptedException{
tool();
System.out.println("aaaaaaaaa"); }
}

测试类

初识Quartz(入门案例)+常用的Cron表达式

总结:常用的Cron表达式

初识Quartz(入门案例)+常用的Cron表达式

初识Quartz(入门案例)+常用的Cron表达式

初识Quartz(入门案例)+常用的Cron表达式

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