quartz 2.2.3 自带示例源码解读example6~example10

example6 任务的异常处理

@PersistJobDataAfterExecution@DisallowConcurrentExecutionpublic class BadJob1 implements Job {private static Logger _log = LoggerFactory.getLogger(BadJob1.class);private int calculation;public BadJob1() {}// 此任务会抛出异常public void execute(JobExecutionContext context)throws JobExecutionException {JobKey jobKey = context.getJobDetail().getKey();JobDataMap dataMap = context.getJobDetail().getJobDataMap();int denominator = dataMap.getInt("denominator");_log.info("---" + jobKey + " executing at " + new Date()+ " with denominator " + denominator);// 此任务因为除以0所以抛出异常，只有第1次才会抛出书异常try {calculation = 4815 / denominator;} catch (Exception e) {_log.info("--- Error in job!");JobExecutionException e2 = new JobExecutionException(e);// 放job的map中放入分母，所以下次不会抛出异常dataMap.put("denominator", "1");// 抛出异常时直接再次触发任务e2.setRefireImmediately(true);  throw e2;}_log.info("---" + jobKey + " completed at " + new Date());}}@PersistJobDataAfterExecution@DisallowConcurrentExecutionpublic class BadJob2 implements Job {    private static Logger _log = LoggerFactory.getLogger(BadJob2.class);    private int calculation;    public BadJob2() {    }    // 此任务会抛出异常    public void execute(JobExecutionContext context)        throws JobExecutionException {        JobKey jobKey = context.getJobDetail().getKey();        _log.info("---" + jobKey + " executing at " + new Date());     // 此任务因为除以0所以抛出异常        try {            int zero = 0;            calculation = 4815 / zero;        } catch (Exception e) {            _log.info("--- Error in job!");            JobExecutionException e2 =                 new JobExecutionException(e);            // quartz将会取消此任务上的触发器，所以此任务不会再执行            e2.setUnscheduleAllTriggers(true);            throw e2;        }        _log.info("---" + jobKey + " completed at " + new Date());    }}public class JobExceptionExample {public void run() throws Exception {Logger log = LoggerFactory.getLogger(JobExceptionExample.class);log.info("------- Initializing ----------------------");SchedulerFactory sf = new StdSchedulerFactory();Scheduler sched = sf.getScheduler();log.info("------- Initialization Complete ------------");log.info("------- Scheduling Jobs -------------------");// 开始时间秒数为15的位数Date startTime = nextGivenSecondDate(null, 15);// badJob1 will run every 10 seconds// this job will throw an exception and refire// immediately// job1每10秒运行一次，由于抛出异常，所以会立即再次触发JobDetail job = newJob(BadJob1.class).withIdentity("badJob1", "group1").usingJobData("denominator", "0").build();SimpleTrigger trigger = newTrigger().withIdentity("trigger1", "group1").startAt(startTime).withSchedule(simpleSchedule().withIntervalInSeconds(10).repeatForever()).build();Date ft = sched.scheduleJob(job, trigger);log.info(job.getKey() + " will run at: " + ft + " and repeat: "+ trigger.getRepeatCount() + " times, every "+ trigger.getRepeatInterval() / 1000 + " seconds");// job2每5秒执行一次，此任务抛出异常后不会再次执行了job = newJob(BadJob2.class).withIdentity("badJob2", "group1").build();trigger = newTrigger().withIdentity("trigger2", "group1").startAt(startTime).withSchedule(simpleSchedule().withIntervalInSeconds(5).repeatForever()).build();ft = sched.scheduleJob(job, trigger);log.info(job.getKey() + " will run at: " + ft + " and repeat: "+ trigger.getRepeatCount() + " times, every "+ trigger.getRepeatInterval() / 1000 + " seconds");log.info("------- Starting Scheduler ----------------");sched.start();log.info("------- Started Scheduler -----------------");try {Thread.sleep(30L * 1000L);} catch (Exception e) {}log.info("------- Shutting Down ---------------------");sched.shutdown(false);log.info("------- Shutdown Complete -----------------");SchedulerMetaData metaData = sched.getMetaData();log.info("Executed " + metaData.getNumberOfJobsExecuted() + " jobs.");}public static void main(String[] args) throws Exception {JobExceptionExample example = new JobExceptionExample();example.run();}}

example7 中断任务

public class DumbInterruptableJob implements InterruptableJob {private static Logger _log = LoggerFactory.getLogger(DumbInterruptableJob.class);private boolean _interrupted = false;private JobKey _jobKey = null;public DumbInterruptableJob() {}public void execute(JobExecutionContext context)throws JobExecutionException {_jobKey = context.getJobDetail().getKey();_log.info("---- " + _jobKey + " executing at " + new Date());try {// 通过睡眠模拟任务所花费的时间for (int i = 0; i < 4; i++) {try {Thread.sleep(1000L);} catch (Exception ignore) {ignore.printStackTrace();}// 检查任务是否被中断if (_interrupted) {_log.info("--- " + _jobKey+ "  -- Interrupted... bailing out!");// 对于特殊的场景我们可以选择抛出一个JobExecutionException异常return;}}} finally {_log.info("---- " + _jobKey + " completed at " + new Date());}}// 中断任务时的回调函数public void interrupt() throws UnableToInterruptJobException {_log.info("---" + _jobKey + "  -- INTERRUPTING --");_interrupted = true;}}public class InterruptExample {public void run() throws Exception {final Logger log = LoggerFactory.getLogger(InterruptExample.class);log.info("------- Initializing ----------------------");SchedulerFactory sf = new StdSchedulerFactory();Scheduler sched = sf.getScheduler();log.info("------- Initialization Complete -----------");log.info("------- Scheduling Jobs -------------------");// 开始时间秒数为15的倍数Date startTime = nextGivenSecondDate(null, 15);// 每5秒执行一次JobDetail job = newJob(DumbInterruptableJob.class).withIdentity("interruptableJob1", "group1").build();SimpleTrigger trigger = newTrigger().withIdentity("trigger1", "group1").startAt(startTime).withSchedule(simpleSchedule().withIntervalInSeconds(5).repeatForever()).build();Date ft = sched.scheduleJob(job, trigger);log.info(job.getKey() + " will run at: " + ft + " and repeat: "+ trigger.getRepeatCount() + " times, every "+ trigger.getRepeatInterval() / 1000 + " seconds");sched.start();log.info("------- Started Scheduler -----------------");log.info("------- Starting loop to interrupt job every 7 seconds ----------");for (int i = 0; i < 50; i++) {try {Thread.sleep(7000L);sched.interrupt(job.getKey()); // 中断任务} catch (Exception e) {}}log.info("------- Shutting Down ---------------------");sched.shutdown(true);log.info("------- Shutdown Complete -----------------");SchedulerMetaData metaData = sched.getMetaData();log.info("Executed " + metaData.getNumberOfJobsExecuted() + " jobs.");}public static void main(String[] args) throws Exception {InterruptExample example = new InterruptExample();example.run();}}

Example 8 Calendar使用

使用Calendar可以排除指定日期，由于没有测试通过，所以就不粘贴这部分示例代码了

Example9 任务监听器

public class SimpleJob1 implements Job {private static Logger _log = LoggerFactory.getLogger(SimpleJob1.class);public SimpleJob1() {}public void execute(JobExecutionContext context)throws JobExecutionException {JobKey jobKey = context.getJobDetail().getKey();_log.info("SimpleJob1 says: " + jobKey + " executing at " + new Date());}}public class SimpleJob2 implements Job {private static Logger _log = LoggerFactory.getLogger(SimpleJob2.class);public SimpleJob2() {}public void execute(JobExecutionContext context)throws JobExecutionException {JobKey jobKey = context.getJobDetail().getKey();_log.info("SimpleJob2 says: " + jobKey + " executing at " + new Date());}}public class Job1Listener implements JobListener {  private static Logger _log = LoggerFactory.getLogger(Job1Listener.class);  public String getName() {    return "job1_to_job2";  }  public void jobToBeExecuted(JobExecutionContext inContext) {    _log.info("Job1Listener says: Job Is about to be executed.");  }  public void jobExecutionVetoed(JobExecutionContext inContext) {    _log.info("Job1Listener says: Job Execution was vetoed.");  }  public void jobWasExecuted(JobExecutionContext inContext, JobExecutionException inException) {    _log.info("Job1Listener says: Job was executed.");    // Simple job #2    JobDetail job2 = newJob(SimpleJob2.class).withIdentity("job2").build();    Trigger trigger = newTrigger().withIdentity("job2Trigger").startNow().build();    try {      inContext.getScheduler().scheduleJob(job2, trigger);    } catch (SchedulerException e) {      _log.warn("Unable to schedule job2!");      e.printStackTrace();    }  }}public class ListenerExample {  public void run() throws Exception {    Logger log = LoggerFactory.getLogger(ListenerExample.class);    log.info("------- Initializing ----------------------");    SchedulerFactory sf = new StdSchedulerFactory();    Scheduler sched = sf.getScheduler();    log.info("------- Initialization Complete -----------");    log.info("------- Scheduling Jobs -------------------");    JobDetail job = newJob(SimpleJob1.class).withIdentity("job1").build();    Trigger trigger = newTrigger().withIdentity("trigger1").startNow().build();    // 设置监听器    JobListener listener = new Job1Listener();    Matcher<JobKey> matcher = KeyMatcher.keyEquals(job.getKey());    sched.getListenerManager().addJobListener(listener, matcher);    sched.scheduleJob(job, trigger);    log.info("------- Starting Scheduler ----------------");    sched.start();    log.info("------- Waiting 30 seconds... --------------");    try {      Thread.sleep(30L * 1000L);    } catch (Exception e) {    }    log.info("------- Shutting Down ---------------------");    sched.shutdown(true);    log.info("------- Shutdown Complete -----------------");    SchedulerMetaData metaData = sched.getMetaData();    log.info("Executed " + metaData.getNumberOfJobsExecuted() + " jobs.");  }  public static void main(String[] args) throws Exception {    ListenerExample example = new ListenerExample();    example.run();  }}

Example10 使用插件

从xml中读取任务配置并运行任务，由于实际中没用到，。。。