在spring框架中通过 @Schedule 可以实现定时任务，通过该注解 cron 的属性描述的规则，spring会去调用这个方法。
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spring已经简单粗暴的实现了定时任务，为什么要使用Quartz ？
如果你现在有很多个定时任务，规则不同，例如:
- 想每月25号，信用卡自动还款
- 想每年4月1日自己给当年暗恋女神发一封匿名贺卡
- 想每隔1小时，备份一下自己的爱情动作片 学习笔记到云盘
maven 依赖
org.quartz-scheduler
quartz
2.2.1
org.quartz-scheduler
quartz-jobs
2.2.1
以下是bootdo开源学习框架的源码
我并没有用到全部的字段，思路是先查询DB，
封装以下两个对象
- JobDetail 负责存放 job 所需要的数据
- Trigger 设置 job 的 key，规则（cron）何时开启任务等属性
当触发条件满足时，会根据所设置的beanClass 找到该类（必须实现org.quartz.Job）， 这时可以取出JobDetail 中的数据，执行具体业务逻辑
@Component
public class WelcomeJob implements Job{
@Override
public void execute(JobExecutionContext arg0) throws JobExecutionException {
//你的业务逻辑
}
}
表结构
CREATE TABLE `sys_task` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`cronExpression` varchar(255) DEFAULT NULL COMMENT 'cron表达式',
`methodName` varchar(255) DEFAULT NULL COMMENT '任务调用的方法名',
`isConcurrent` varchar(255) DEFAULT NULL COMMENT '任务是否有状态',
`description` varchar(255) DEFAULT NULL COMMENT '任务描述',
`updateBy` varchar(64) DEFAULT NULL COMMENT '更新者',
`beanClass` varchar(255) DEFAULT NULL COMMENT '任务执行时调用哪个类的方法 包名+类名',
`createDate` datetime DEFAULT NULL COMMENT '创建时间',
`jobStatus` varchar(255) DEFAULT NULL COMMENT '任务状态',
`jobGroup` varchar(255) DEFAULT NULL COMMENT '任务分组',
`updateDate` datetime DEFAULT NULL COMMENT '更新时间',
`createBy` varchar(64) DEFAULT NULL COMMENT '创建者',
`springBean` varchar(255) DEFAULT NULL COMMENT 'Spring bean',
`jobName` varchar(255) DEFAULT NULL COMMENT '任务名',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPACT;
配置类
import java.io.IOException;
import java.util.Properties;
import org.quartz.Scheduler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.PropertiesFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import com.txgl.common.quartz.factory.JobFactory;
@Configuration
public class QuartzConfigration {
@Autowired
JobFactory jobFactory;
@Bean
public SchedulerFactoryBean schedulerFactoryBean() {
SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
try {
schedulerFactoryBean.setOverwriteExistingJobs(true);
schedulerFactoryBean.setQuartzProperties(quartzProperties());
schedulerFactoryBean.setJobFactory(jobFactory);
} catch (IOException e) {
e.printStackTrace();
}
return schedulerFactoryBean;
}
// 指定quartz.properties
@Bean
public Properties quartzProperties() throws IOException {
PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
propertiesFactoryBean.setLocation(new ClassPathResource("/config/quartz.properties"));
propertiesFactoryBean.afterPropertiesSet();
return propertiesFactoryBean.getObject();
}
// 创建schedule
@Bean(name = "scheduler")
public Scheduler scheduler() {
return schedulerFactoryBean().getScheduler();
}
}
QuartzManager的代码是关键，通过注入Scheduler 对任务进行操作
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.apache.log4j.Logger;
import org.quartz.CronScheduleBuilder;
import org.quartz.CronTrigger;
import org.quartz.DateBuilder;
import org.quartz.DateBuilder.IntervalUnit;
import org.quartz.Job;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.TriggerKey;
import org.quartz.impl.matchers.GroupMatcher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import org.springframework.stereotype.Service;
import org.springframework.web.context.support.SpringBeanAutowiringSupport;
import com.bootdo.common.domain.ScheduleJob;
import com.bootdo.common.quartz.factory.*;
import com.bootdo.common.utils.SpringContextHolder;;
/**
*
*
* @title: QuartzManager.java
* @description: 计划任务管理
*
*/
@Service
public class QuartzManager {
public final Logger log = Logger.getLogger(this.getClass());
// private SchedulerFactoryBean schedulerFactoryBean
// =SpringContextHolder.getBean(SchedulerFactoryBean.class);
// @Autowired
// @Qualifier("schedulerFactoryBean")
// private SchedulerFactoryBean schedulerFactoryBean;
@Autowired
private Scheduler scheduler;
/**
* 添加任务
*
* @param scheduleJob
* @throws SchedulerException
*/
public void addJob(ScheduleJob job) {
try {
// 创建jobDetail实例，绑定Job实现类
// 指明job的名称，所在组的名称，以及绑定job类
Class<? extends Job> jobClass = (Class<? extends Job>) (Class.forName(job.getBeanClass()).newInstance()
.getClass());
JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(job.getJobName(), job.getJobGroup())// 任务名称和组构成任务key
.build();
// 定义调度触发规则
// 使用cornTrigger规则
Trigger trigger = TriggerBuilder.newTrigger().withIdentity(job.getJobName(), job.getJobGroup())// 触发器key
.startAt(DateBuilder.futureDate(1, IntervalUnit.SECOND))
.withSchedule(CronScheduleBuilder.cronSchedule(job.getCronExpression())).startNow().build();
// 把作业和触发器注册到任务调度中
scheduler.scheduleJob(jobDetail, trigger);
// 启动
if (!scheduler.isShutdown()) {
scheduler.start();
}
} catch (Exception e) {
e.printStackTrace();
}
}
// public void addJob(ScheduleJob job) throws SchedulerException {
// if (job == null || !ScheduleJob.STATUS_RUNNING.equals(job.getJobStatus())) {
// return;
// }
//
// TriggerKey triggerKey = TriggerKey.triggerKey(job.getJobName(), job.getJobGroup());
//
// CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
//
// // 不存在，创建一个
//
// if (null == trigger) {
// Class<? extends Job> clazz = ScheduleJob.CONCURRENT_IS.equals(job.getIsConcurrent())
// ? QuartzJobFactory.class
// : QuartzJobFactoryDisallowConcurrentExecution.class;
//
// JobDetail jobDetail = JobBuilder.newJob(clazz).withIdentity(job.getJobName(), job.getJobGroup()).build();
//
// jobDetail.getJobDataMap().put("scheduleJob", job);
//
// CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
//
// trigger = TriggerBuilder.newTrigger().withIdentity(job.getJobName(), job.getJobGroup())
// .withSchedule(scheduleBuilder).build();
//
// scheduler.scheduleJob(jobDetail, trigger);
// } else {
// // Trigger已存在，那么更新相应的定时设置
//
// 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);
// }
// }
/**
* 获取所有计划中的任务列表
*
* @return
* @throws SchedulerException
*/
public List getAllJob() throws SchedulerException {
GroupMatcher matcher = GroupMatcher.anyJobGroup();
Set jobKeys = scheduler.getJobKeys(matcher);
List jobList = new ArrayList();
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.setDescription("触发器:" + trigger.getKey());
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);
}
}
return jobList;
}
/**
* 所有正在运行的job
*
* @return
* @throws SchedulerException
*/
public List getRunningJob() throws SchedulerException {
List executingJobs = scheduler.getCurrentlyExecutingJobs();
List jobList = new ArrayList(executingJobs.size());
for (JobExecutionContext executingJob : executingJobs) {
ScheduleJob job = new ScheduleJob();
JobDetail jobDetail = executingJob.getJobDetail();
JobKey jobKey = jobDetail.getKey();
Trigger trigger = executingJob.getTrigger();
job.setJobName(jobKey.getName());
job.setJobGroup(jobKey.getGroup());
job.setDescription("触发器:" + trigger.getKey());
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);
}
return jobList;
}
/**
* 暂停一个job
*
* @param scheduleJob
* @throws SchedulerException
*/
public void pauseJob(ScheduleJob scheduleJob) throws SchedulerException {
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.pauseJob(jobKey);
}
/**
* 恢复一个job
*
* @param scheduleJob
* @throws SchedulerException
*/
public void resumeJob(ScheduleJob scheduleJob) throws SchedulerException {
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.resumeJob(jobKey);
}
/**
* 删除一个job
*
* @param scheduleJob
* @throws SchedulerException
*/
public void deleteJob(ScheduleJob scheduleJob) throws SchedulerException {
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.deleteJob(jobKey);
}
/**
* 立即执行job
*
* @param scheduleJob
* @throws SchedulerException
*/
public void runAJobNow(ScheduleJob scheduleJob) throws SchedulerException {
JobKey jobKey = JobKey.jobKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
scheduler.triggerJob(jobKey);
}
/**
* 更新job时间表达式
*
* @param scheduleJob
* @throws SchedulerException
*/
public void updateJobCron(ScheduleJob scheduleJob) throws SchedulerException {
TriggerKey triggerKey = TriggerKey.triggerKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression());
trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
scheduler.rescheduleJob(triggerKey, trigger);
}
}service实现
import com.bootdo.common.config.Constant;
import com.bootdo.common.dao.TaskDao;
import com.bootdo.common.domain.ScheduleJob;
import com.bootdo.common.domain.TaskDO;
import com.bootdo.common.quartz.utils.QuartzManager;
import com.bootdo.common.service.JobService;
import com.bootdo.common.utils.ScheduleJobUtils;
import org.quartz.SchedulerException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@Service
public class JobServiceImpl implements JobService {
@Autowired
private TaskDao taskScheduleJobMapper;
@Autowired
QuartzManager quartzManager;
@Override
public TaskDO get(Long id) {
return taskScheduleJobMapper.get(id);
}
@Override
public List list(Map map) {
return taskScheduleJobMapper.list(map);
}
@Override
public int count(Map map) {
return taskScheduleJobMapper.count(map);
}
@Override
public int save(TaskDO taskScheduleJob) {
return taskScheduleJobMapper.save(taskScheduleJob);
}
@Override
public int update(TaskDO taskScheduleJob) {
return taskScheduleJobMapper.update(taskScheduleJob);
}
@Override
public int remove(Long id) {
try {
TaskDO scheduleJob = get(id);
quartzManager.deleteJob(ScheduleJobUtils.entityToData(scheduleJob));
return taskScheduleJobMapper.remove(id);
} catch (SchedulerException e) {
e.printStackTrace();
return 0;
}
}
@Override
public int batchRemove(Long[] ids) {
for (Long id : ids) {
try {
TaskDO scheduleJob = get(id);
quartzManager.deleteJob(ScheduleJobUtils.entityToData(scheduleJob));
} catch (SchedulerException e) {
e.printStackTrace();
return 0;
}
}
return taskScheduleJobMapper.batchRemove(ids);
}
@Override
public void initSchedule() throws SchedulerException {
// 这里获取任务信息数据
List jobList = taskScheduleJobMapper.list(new HashMap(16));
for (TaskDO scheduleJob : jobList) {
if ("1".equals(scheduleJob.getJobStatus())) {
ScheduleJob job = ScheduleJobUtils.entityToData(scheduleJob);
quartzManager.addJob(job);
}
}
}
@Override
public void changeStatus(Long jobId, String cmd) throws SchedulerException {
TaskDO scheduleJob = get(jobId);
if (scheduleJob == null) {
return;
}
if (Constant.STATUS_RUNNING_STOP.equals(cmd)) {
quartzManager.deleteJob(ScheduleJobUtils.entityToData(scheduleJob));
scheduleJob.setJobStatus(ScheduleJob.STATUS_NOT_RUNNING);
} else {
if (!Constant.STATUS_RUNNING_START.equals(cmd)) {
} else {
scheduleJob.setJobStatus(ScheduleJob.STATUS_RUNNING);
quartzManager.addJob(ScheduleJobUtils.entityToData(scheduleJob));
}
}
update(scheduleJob);
}
@Override
public void updateCron(Long jobId) throws SchedulerException {
TaskDO scheduleJob = get(jobId);
if (scheduleJob == null) {
return;
}
if (ScheduleJob.STATUS_RUNNING.equals(scheduleJob.getJobStatus())) {
quartzManager.updateJobCron(ScheduleJobUtils.entityToData(scheduleJob));
}
update(scheduleJob);
}
}
启动一个监听去初始化Quartz
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import com.bootdo.common.quartz.utils.QuartzManager;
import com.bootdo.common.service.JobService;
@Component
@Order(value = 1)
public class ScheduleJobInitListener implements CommandLineRunner {
@Autowired
JobService scheduleJobService;
@Autowired
QuartzManager quartzManager;
@Override
public void run(String... arg0) throws Exception {
try {
scheduleJobService.initSchedule();
} catch (Exception e) {
e.printStackTrace();
}
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持创新互联。
标题名称：springboot+Quartz实现任务调度的示例代码
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