quartz实现原理与集群原理自行百度，本文提供quartz2.2.1版本集群环境动态创建、调度、暂停、恢复、删除Job方法。
1.quartz集群依赖数据库脚本
2.quartz简单监控表
3.监控列表与新建页面示例
4.quartz.properties示例
org.quartz.scheduler.instanceName = THScheduler
org.quartz.scheduler.instanceId = AUTO
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 10
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.maxMisfiresToHandleAtATime=10
org.quartz.jobStore.isClustered = true
org.quartz.jobStore.clusterCheckinInterval = 20000
5.容器中基本配置 Spring-quartz.xml示例
<bean name="THScheduler " lazy-init="true" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="dataSource"> <ref bean="dataSource" /> </property>
<property name="applicationContextSchedulerContextKey" value="applicationContext" />
<property name="configLocation" value="classpath:quartz.properties" />
<!-- overwriteExistingJobs:覆盖任务调度器中同名的jobDetail,避免只修改了CronExpression所造成的不能重新生效情况 -->
<property name="overwriteExistingJobs" value="true" />
</bean>
6.quartz管理类示例
/**
* 修改任务Cron
*/
public void modifyTigger(String name, String group, String cron)throws SchedulerException {
Scheduler scheduler = SPRING_CONTEXT.getBean(Scheduler.class);
TriggerKey key = TriggerKey.triggerKey(name, group);
Trigger.TriggerState triggerState = scheduler.getTriggerState(key);
CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(key).withSchedule(CronScheduleBuilder.cronSchedule(cron)).build();
scheduler.rescheduleJob(key, trigger);
JobKey k =new JobKey(name, group);
log.info("修改任务:{}", name);
if(!JobDetails.NORMAL.equals(triggerState.name())){
scheduler.pauseJob(k);
}
}
/**
* 添加Job
* @param jobName job名称
* @param cls job执行类
* @param group 群组名称
* @param cron cron表达式
*/
public void addJob(String jobName, Class cls, String group, String cron)throws SchedulerException {
Scheduler sched = SPRING_CONTEXT.getBean(Scheduler.class);
// 用于描叙Job实现类及其他的一些静态信息，构建一个作业实例
JobDetail jobDetail = JobBuilder.newJob(cls).withIdentity(jobName, group).build();
// 构建一个触发器，规定触发的规则
Trigger trigger = TriggerBuilder.newTrigger()// 创建一个新的TriggerBuilder来规范一个触发器
.withIdentity(jobName, group)// 给触发器起一个名字和组名
.startNow()// 立即执行
.withSchedule(CronScheduleBuilder.cronSchedule(cron))// 触发器的执行时间
.build();// 产生触发器
// 调度Job
sched.scheduleJob(jobDetail, trigger);
log.debug("添加任务:{},{},{}", jobName, cls, cron);
if (!sched.isShutdown()) {
sched.start();
}
}
/**
* 暂停一个任务
*/
public void pauseJob(String jobName, String jobGroupName)throws Exception {
JobKey jobKey = JobKey.jobKey(jobName, jobGroupName);
Scheduler sched = SPRING_CONTEXT.getBean(Scheduler.class);
sched.pauseJob(jobKey);
log.info("暂停任务:{}", jobName);
}
/**
* 恢复一个任务
*/
public void resumeJob(String jobName, String jobGroupName)throws Exception {
JobKey jobKey = JobKey.jobKey(jobName, jobGroupName);
Scheduler sched = SPRING_CONTEXT.getBean(Scheduler.class);
sched.resumeJob(jobKey);
log.info("恢复任务:{}", jobName);
}
/**
* 移除一个任务
*/
public void removeJob(String jobName, String group)throws SchedulerException {
Scheduler sched = SPRING_CONTEXT.getBean(Scheduler.class);
JobKey jobKey =new JobKey(jobName, group);
// 停止触发器
sched.pauseJob(jobKey);
sched.unscheduleJob(new TriggerKey(jobName, group));// 移除触发器
sched.deleteJob(jobKey);// 删除任务
log.info("移除任务:{}", jobName);
}
/**
* 启动所有定时任务
*/
public void startJobs() {
try {
Scheduler sched = SPRING_CONTEXT.getBean(Scheduler.class);
sched.start();
}catch (Exception e) {
throw new RuntimeException(e);
}
}
7.web层示例（QuartzService中的方法均为对job监控表进行的单表crud操作）
/**
* Job列表
*/
@RequestMapping(path ="/quartz/list")
public Page findList(HttpServletRequest req){
log.info("查询job列表");
return SPRING_CONTEXT.getBean(QuartzService.class).findList(getPageSort(req));
}
/**
* 跳转至job新建页面
*/
@RequestMapping(path ="/quartz/to/add/{id}")
public ModelAndView toAdd(@PathVariable Long id, HttpServletRequest req){
log.info("调整至新建页面，jobId为{}", id);
ModelAndView m =new ModelAndView();
if(id != -1){
m.addObject("job", SPRING_CONTEXT.getBean(QuartzService.class).findById(id));
}
m.addObject("id", id);
m.setViewName("/dth/quartz/edit.jsp");
return m;
}
/**
* 编辑Job
*/
@RequestMapping(path ="/quartz/save")
public String save(JobDetails jobDetails, HttpServletRequest req)throws Exception {
return -1 == jobDetails.getId() ? addJob(jobDetails, getSessionUser(req)) : updateJob(jobDetails);
}
/**
* 新建
*/
public String addJob(JobDetails jobDetails, User user)throws BusinessException {
log.info("新建job，jobId为{}", jobDetails.getId());
SPRING_CONTEXT.getBean(QuartzService.class).addJob(jobDetails, user);
return success("ok");
}
/**
* 修改Cron与备注
*/
public String updateJob(JobDetails jobDetails)throws Exception {
log.info("修改Cron与备注，jobId为{}", jobDetails.getId());
SPRING_CONTEXT.getBean(QuartzService.class).updateJob(jobDetails);
SPRING_CONTEXT.getBean(QuartzManagerService.class).modifyTigger(jobDetails.getNames(), jobDetails.getGroups(), jobDetails.getCron());
return success("ok");
}
/**
* 开始调度Job
*/
@RequestMapping(path ="/quartz/schedu/{id}")
public String scheduJob(@PathVariable Long id)throws Exception {
log.info("开始调度Job，jobId为{}", id);
JobDetails j = SPRING_CONTEXT.getBean(QuartzService.class).findById(id);
j.setStatus(JobDetails.NORMAL);
SPRING_CONTEXT.getBean(QuartzService.class).updateJobStatus(j);
SPRING_CONTEXT.getBean(QuartzManagerService.class).addJob(j.getNames(), Class.forName(j.getClassName()), j.getGroups(), j.getCron());
return success("ok");
}
/**
* 恢复执行Job
*/
@RequestMapping(path ="/quartz/start/{id}")
public String startJob(@PathVariable Long id)throws Exception {
log.info("恢复执行Job，jobId为{}", id);
JobDetails j = SPRING_CONTEXT.getBean(QuartzService.class).findById(id);
j.setStatus(JobDetails.NORMAL);
SPRING_CONTEXT.getBean(QuartzService.class).updateJobStatus(j);
SPRING_CONTEXT.getBean(QuartzManagerService.class).resumeJob(j.getNames(), j.getGroups());
return success("ok");
}
/**
* 暂停Job
*/
@RequestMapping(path ="/quartz/stop/{id}")
public String stopJob(@PathVariable Long id)throws Exception {
log.info("暂停Job，jobId为{}", id);
JobDetails j = SPRING_CONTEXT.getBean(QuartzService.class).findById(id);
j.setStatus(JobDetails.PAUSED);
SPRING_CONTEXT.getBean(QuartzService.class).updateJobStatus(j);
SPRING_CONTEXT.getBean(QuartzManagerService.class).pauseJob(j.getNames(), j.getGroups());
return success("ok");
}
/**
* 删除Job
*/
@RequestMapping(path ="/quartz/delete/{id}")
public String deleteJob(@PathVariable Long id)throws Exception {
log.info("删除Job，jobId为{}", id);
JobDetails j = SPRING_CONTEXT.getBean(QuartzService.class).findById(id);
SPRING_CONTEXT.getBean(QuartzManagerService.class).removeJob(j.getNames(), j.getGroups());
SPRING_CONTEXT.getBean(QuartzService.class).deleteJob(j);
return success("ok");
}
8.实时获取内存中job信息
@RequestMapping(path ="/testQuartz/list")
public List list()throws SchedulerException {
List list =new ArrayList<>();
Scheduler scheduler = SPRING_CONTEXT.getBean(Scheduler.class);
for (String groupName : scheduler.getJobGroupNames()) {
for (JobKey jobKey : scheduler.getJobKeys(GroupMatcher.jobGroupEquals(groupName))) {
JobDetails j =new JobDetails();
j.setNames(jobKey.getName());
j.setGroups(jobKey.getGroup());
j.setStatus(scheduler.getTriggerState(TriggerKey.triggerKey(jobKey.getName(), jobKey.getGroup())).toString());
TriggerKey triggerKey =new TriggerKey(jobKey.getName(), jobKey.getGroup());
CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
j.setCron(trigger.getCronExpression());
j.setPreDate(trigger.getPreviousFireTime());
j.setNextDate(trigger.getNextFireTime());
JobDetail jobDetail = scheduler.getJobDetail(new JobKey(jobKey.getName(), jobKey.getGroup()));
Class objJobClass = jobDetail.getJobClass();
j.setClassName(objJobClass.getName());
j.setMethodName(objJobClass.getMethods()[0].getName());
list.add(j);
}
}
return list;
}
