quartz 立即执行+定时+防止并发+监听Job是否运行状态

这文章没有新手教程，只有个人一些笔记，新手请下载附件教程：

SimpleRun:

package cn.wa8.qweb.extract.quartz;import java.util.Date;import org.quartz.CronTrigger;import org.quartz.JobDetail;import org.quartz.Scheduler;import org.quartz.SchedulerException;import org.quartz.SchedulerFactory;import org.quartz.SimpleTrigger;import org.quartz.Trigger;import org.quartz.impl.StdScheduler;import org.quartz.impl.StdSchedulerFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.context.ApplicationContext;import org.springframework.scheduling.quartz.SchedulerFactoryBean;import cn.wa8.qweb.extract.action.Extract2DB;public class SimpleRun {private static Logger log = LoggerFactory.getLogger(SimpleRun.class);public void run() throws Exception {SchedulerFactory schedFact = new org.quartz.impl.StdSchedulerFactory();    Scheduler sched = schedFact.getScheduler();    JobDetail jobDetail = new JobDetail("myJob",null,SimpleJob.class);    SimpleTrigger trigger = new SimpleTrigger("myTrigger",    null,    new Date(),    null,    SimpleTrigger.REPEAT_INDEFINITELY,    30L * 1000L);        sched.scheduleJob(jobDetail, trigger);    //sched.addJobListener(new MyTriggerListener());    SimpleJob.preDate = new Date();    sched.start();    System.out.println("starting"); /**  * state的值代表该任务触发器的状态：STATE_BLOCKED 4 // 运行STATE_COMPLETE 2  //完成那一刻，不过一般不用这个判断Job状态STATE_ERROR 3  // 错误STATE_NONE -1//未知STATE_NORMAL 0   //正常无任务，用这个判断Job是否在运行STATE_PAUSED 1//暂停状态 */    while (true){    if(4 == sched.getTriggerState("myTrigger", null)){    System.out.println("running");    }else if(0 == sched.getTriggerState("myTrigger", null)){    System.out.println("ending");    }else {    System.out.println("error state:"+sched.getTriggerState("myTrigger", null));    }    try {Thread.sleep(5*1000);} catch (Exception e) {// TODO: handle exception}    }}public static void main(String[] args)  {SimpleRun simpleRun = new SimpleRun();try {simpleRun.run();} catch (Exception e) {e.printStackTrace();}}}

Simple Job:

import java.util.Date;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import cn.wa8.qweb.extract.action.Extract2DB;import org.quartz.Job;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;import org.quartz.StatefulJob;/*Extract2DB extract2db = new Extract2DB();extract2db.CommonBaseExtract();*/public class SimpleJob  implements StatefulJob{public static Date preDate ;public void execute(JobExecutionContext arg0) throws JobExecutionException {System.out.println("into Job");Date currentDate = new Date();Long s = (currentDate.getTime()-preDate.getTime())/1000;try {Thread.sleep(10*1000);} catch (Exception e) {e.printStackTrace();}System.out.println(s);System.out.println("leave Job:"+Thread.currentThread().toString());preDate =currentDate;}}