最简单的用配置文件设置定时任务
<!-- 使用MethodInvokingJobDetailFactoryBean，任务类可以不实现Job接口，通过targetMethod指定调用方法-->
<bean id="taskJob" class="com.tyyd.dw.task.DataConversionTask"/>
<bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="group" value="job_work"/>
<property name="name" value="job_work_name"/>
<!--false表示等上一个任务执行完后再开启新的任务-->
<property name="concurrent" value="false"/>
<property name="targetObject">
<ref bean="taskJob"/>
</property>
<property name="targetMethod">
<value>execute</value>
</property>
</bean>
<!-- 调度触发器 -->
<bean id="myTrigger"
class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="name" value="work_default_name"/>
<property name="group" value="work_default"/>
<property name="jobDetail">
<ref bean="jobDetail" />
</property>
<property name="cronExpression">
<value>0/5 * * * * ?</value>
</property>
</bean>
<!-- 调度工厂 -->
<bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref bean="myTrigger"/>
</list>
</property>
</bean>
但有时候会经常改变任务时间或者暂停任务，这时需要用到动态的任务。
动态任务的时间可以保存在数据库，需要改变的时候重新从数据库读取，也可以临时写入。
通过注入schedulerFactoryBean，利用它来进行对任务的动态操作。
<bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean" />
然后需要初始化任务，代码中ScheduleJob就是储存任务信息的一个自定义对象。在初始化方法后面给出类代码
扫描二维码关注公众号，回复：
578751 查看本文章
public void initCheduler() throws SchedulerException {
//schedulerFactoryBean 由spring创建注入
Scheduler scheduler = schedulerFactoryBean.getScheduler();
//这里获取任务信息数据
List<ScheduleJob> jobList = this.getAllJob();
for (ScheduleJob job : jobList) {
TriggerKey triggerKey = TriggerKey.triggerKey(job.getJobName(), job.getJobGroup());
//获取trigger，即在spring配置文件中定义的 bean id="myTrigger"
CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
//不存在，创建一个
if (null == trigger) {
JobDetail jobDetail = JobBuilder.newJob(QuartzJobFactory.class).withIdentity(job.getJobName(), job.getJobGroup()).build();
jobDetail.getJobDataMap().put("scheduleJob", job);
//表达式调度构建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
//按新的cronExpression表达式构建一个新的trigger
trigger = TriggerBuilder.newTrigger().withIdentity(job.getJobName(), job.getJobGroup()).withSchedule(scheduleBuilder).build();
scheduler.scheduleJob(jobDetail, trigger);
JobKey jobKey = JobKey.jobKey(job.getJobName(), job.getJobGroup());
scheduler.triggerJob(jobKey);
} else {
// Trigger已存在，那么更新相应的定时设置
//表达式调度构建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
//按新的cronExpression表达式重新构建trigger
trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
//按新的trigger重新设置job执行
scheduler.rescheduleJob(triggerKey, trigger);
}
}
}
public class ScheduleJob extends BaseEntity{
/** 任务名称 */
private String jobName;
/** 任务分组 */
private String jobGroup;
/** 任务状态 0禁用 1启用 2删除*/
private String jobStatus;
/** 任务运行时间表达式 */
private String cronExpression;
/** 任务描述 */
private String descb;
public String getJobName() {
return jobName;
}
public void setJobName(String jobName) {
this.jobName = jobName;
}
public String getJobGroup() {
return jobGroup;
}
public void setJobGroup(String jobGroup) {
this.jobGroup = jobGroup;
}
public String getJobStatus() {
return jobStatus;
}
public void setJobStatus(String jobStatus) {
this.jobStatus = jobStatus;
}
public String getCronExpression() {
return cronExpression;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
public String getDescb() {
return descb;
}
public void setDescb(String desc) {
this.descb = desc;
}
}
此时任务已经初始化，但是还没有执行任务方法的地方，下面给出
public class QuartzJobFactory implements Job {
static VideoSerice videoSerice;
static{
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:config/applicationContext.xml");
videoSerice=(VideoSerice)context.getBean("videoServiceImpl");
}
@Override
public void execute(JobExecutionContext context) throws JobExecutionException {
System.out.println("任务成功运行");
ScheduleJob scheduleJob = (ScheduleJob)context.getMergedJobDataMap().get("scheduleJob");
System.out.println("任务名称 = [" + scheduleJob.getJobName() + "]");
videoSerice.getLottery();
}
}
当有任务到达执行时间时会进入execute方法，此时context里面包含了任务信息。根据不同的任务信息我们执行不同的任务。
最后一般操作任务的方法
暂停任务
Scheduler scheduler = schedulerFactoryBean.getScheduler();
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.pauseJob(jobKey);
恢复任务
Scheduler scheduler = schedulerFactoryBean.getScheduler();
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.resumeJob(jobKey);
删除任务
Scheduler scheduler = schedulerFactoryBean.getScheduler();
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.deleteJob(jobKey);
立即运行任务（只会执行一次）
Scheduler scheduler = schedulerFactoryBean.getScheduler();
JobKey jobKey =JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.triggerJob(jobKey);
获取任务此时状态
trigger各状态说明：
None：Trigger已经完成，且不会在执行，或者找不到该触发器，或者Trigger已经被删除 NORMAL:正常状态 PAUSED：暂停状态 COMPLETE：触发器完成，但是任务可能还正在执行中 BLOCKED：线程阻塞状态 ERROR：出现错误
Scheduler scheduler = schedulerFactoryBean.getScheduler();
GroupMatcher<JobKey> matcher = GroupMatcher.anyJobGroup();
Set<JobKey> jobKeys = scheduler.getJobKeys(matcher);
List<ScheduleJob> jobList = new ArrayList<ScheduleJob>();
for (JobKey jobKey : jobKeys) {
List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey);
for (Trigger trigger : triggers) {
ScheduleJob job = new ScheduleJob();
job.setJobName(jobKey.getName());
job.setJobGroup(jobKey.getGroup());
job.setDesc("触发器:" + trigger.getKey());
//此时获取到任务状态
Trigger.TriggerState triggerState = scheduler.getTriggerState(trigger.getKey());
job.setJobStatus(triggerState.name());
if (trigger instanceof CronTrigger) {
CronTrigger cronTrigger = (CronTrigger) trigger;
String cronExpression = cronTrigger.getCronExpression();
job.setCronExpression(cronExpression);
}
jobList.add(job);
}
}