1、项目启动时、spring容器 解析bean 装配到工厂中___
/**
* 定时任务配置
*/
@Configuration
public class ScheduleConfig {
@Bean
public SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource) {
SchedulerFactoryBean factory = new SchedulerFactoryBean();
factory.setDataSource(dataSource);
//quartz参数
Properties prop = new Properties();
prop.put("org.quartz.scheduler.instanceName", "RenrenScheduler");
prop.put("org.quartz.scheduler.instanceId", "AUTO");
//线程池配置
prop.put("org.quartz.threadPool.class", "org.quartz.simpl.SimpleThreadPool");
prop.put("org.quartz.threadPool.threadCount", "20");
prop.put("org.quartz.threadPool.threadPriority", "5");
//JobStore配置
prop.put("org.quartz.jobStore.class", "org.quartz.impl.jdbcjobstore.JobStoreTX");
//集群配置
prop.put("org.quartz.jobStore.isClustered", "true");
prop.put("org.quartz.jobStore.clusterCheckinInterval", "15000");
prop.put("org.quartz.jobStore.maxMisfiresToHandleAtATime", "1");
prop.put("org.quartz.jobStore.misfireThreshold", "12000");
prop.put("org.quartz.jobStore.tablePrefix", "QRTZ_");
prop.put("org.quartz.jobStore.selectWithLockSQL", "SELECT * FROM {0}LOCKS UPDLOCK WHERE LOCK_NAME = ?");
//PostgreSQL数据库,需要打开此注释
//prop.put("org.quartz.jobStore.driverDelegateClass", "org.quartz.impl.jdbcjobstore.PostgreSQLDelegate");
factory.setQuartzProperties(prop);
factory.setSchedulerName("RenrenScheduler");
//延时启动
factory.setStartupDelay(30);
factory.setApplicationContextSchedulerContextKey("applicationContextKey");
//可选,QuartzScheduler 启动时更新己存在的Job,这样就不用每次修改targetObject后删除qrtz_job_details表对应记录了
factory.setOverwriteExistingJobs(true);
//设置自动启动,默认为true
factory.setAutoStartup(true);
return factory;
}
}
2、此时任务调度中心已经创建、需要绑定触发器__初始化触发器、项目启动时加载
@Autowired
private Scheduler scheduler;
上述对象已存在工厂中、随时可以取出来使用_________
/**
* 项目启动时,初始化定时器
*/
@PostConstruct
public void init(){
List<ScheduleJobEntity> scheduleJobList = this.selectList(null);
for(ScheduleJobEntity scheduleJob : scheduleJobList){
CronTrigger cronTrigger = ScheduleUtils.getCronTrigger(scheduler, scheduleJob.getJobId());
//如果不存在,则创建
if(cronTrigger == null) {
ScheduleUtils.createScheduleJob(scheduler, scheduleJob);
}else {
ScheduleUtils.updateScheduleJob(scheduler, scheduleJob);
}
}
}
3、定时任务工具类、负责对调度中心scheduler 中任务的创建、启动、暂停、恢复等一系列的管理___
/**
* 定时任务工具类
*/
public class ScheduleUtils {
private final static String JOB_NAME = "TASK_";
/**
* 获取触发器key
*/
public static TriggerKey getTriggerKey(Long jobId) {
return TriggerKey.triggerKey(JOB_NAME + jobId);
}
/**
* 获取jobKey
*/
public static JobKey getJobKey(Long jobId) {
return JobKey.jobKey(JOB_NAME + jobId);
}
/**
* 获取表达式触发器
*/
public static CronTrigger getCronTrigger(Scheduler scheduler, Long jobId) {
try {
return (CronTrigger) scheduler.getTrigger(getTriggerKey(jobId));
} catch (SchedulerException e) {
throw new RRException("获取定时任务CronTrigger出现异常", e);
}
}
/**
* 创建定时任务
*/
public static void createScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
try {
//构建job信息
JobDetail jobDetail = JobBuilder.newJob(ScheduleJob.class).withIdentity(getJobKey(scheduleJob.getJobId())).build();
//表达式调度构建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing();
//按新的cronExpression表达式构建一个新的trigger
CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(scheduleJob.getJobId())).withSchedule(scheduleBuilder).build();
//放入参数,运行时的方法可以获取
jobDetail.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);
scheduler.scheduleJob(jobDetail, trigger);
//暂停任务
if(scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()){
pauseJob(scheduler, scheduleJob.getJobId());
}
} catch (SchedulerException e) {
throw new RRException("创建定时任务失败", e);
}
}
/**
* 更新定时任务
*/
public static void updateScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
try {
TriggerKey triggerKey = getTriggerKey(scheduleJob.getJobId());
//表达式调度构建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing();
CronTrigger trigger = getCronTrigger(scheduler, scheduleJob.getJobId());
//按新的cronExpression表达式重新构建trigger
trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
//参数
trigger.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);
scheduler.rescheduleJob(triggerKey, trigger);
//暂停任务
if(scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()){
pauseJob(scheduler, scheduleJob.getJobId());
}
} catch (SchedulerException e) {
throw new RRException("更新定时任务失败", e);
}
}
/**
* 立即执行任务
*/
public static void run(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
try {
//参数
JobDataMap dataMap = new JobDataMap();
dataMap.put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);
scheduler.triggerJob(getJobKey(scheduleJob.getJobId()), dataMap);
} catch (SchedulerException e) {
throw new RRException("立即执行定时任务失败", e);
}
}
/**
* 暂停任务
*/
public static void pauseJob(Scheduler scheduler, Long jobId) {
try {
scheduler.pauseJob(getJobKey(jobId));
} catch (SchedulerException e) {
throw new RRException("暂停定时任务失败", e);
}
}
/**
* 恢复任务
*/
public static void resumeJob(Scheduler scheduler, Long jobId) {
try {
scheduler.resumeJob(getJobKey(jobId));
} catch (SchedulerException e) {
throw new RRException("暂停定时任务失败", e);
}
}
/**
* 删除定时任务
*/
public static void deleteScheduleJob(Scheduler scheduler, Long jobId) {
try {
scheduler.deleteJob(getJobKey(jobId));
} catch (SchedulerException e) {
throw new RRException("删除定时任务失败", e);
}
}
}