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本篇文章给大家分享的是有关SpringBoot2 中怎么使用 QuartJob 实现定时器实时管理，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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Quartz是一个完全由java编写的开源作业调度框架，形式简易，功能强大。
Scheduler
代表一个 Quartz 的独立运行容器，Scheduler 将 Trigger 绑定到特定 JobDetail， 这样当 Trigger 触发时， 对应的 Job 就会被调度。
Trigger
描述 Job 执行的时间触发规则。主要有 SimpleTrigger 和 CronTrigger 两个子类，通过一个 TriggerKey 唯一标识。
Job
定义一个任务，规定了任务是执行时的行为。JobExecutionContext 提供了调度器的上下文信息，Job 的数据可从 JobDataMap 中获取。
JobDetail
Quartz 在每次执行 Job 时，都重新创建一个 Job 实例，所以它不直接接受一个 Job 的实例，相反它接收一个 Job 实现类。描述 Job 的实现类及其它相关的静态信息，如 Job 名字、描述等。
版本描述
spring-boot：2.1.3.RELEASE quart-job：2.3.0
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import javax.sql.DataSource;
import java.util.Properties;
@Configuration
public class ScheduleConfig {
@Bean
public SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource) {
// Quartz参数配置
Properties prop = new Properties();
// Schedule调度器的实体名字
prop.put("org.quartz.scheduler.instanceName", "HuskyScheduler");
// 设置为AUTO时使用，默认的实现org.quartz.scheduler.SimpleInstanceGenerator是基于主机名称和时间戳生成。
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:Scheduler在运行时用来存储相关的信息
// JDBCJobStore和JobStoreTX都使用关系数据库来存储Schedule相关的信息。
// JobStoreTX在每次执行任务后都使用commit或者rollback来提交更改。
prop.put("org.quartz.jobStore.class", "org.quartz.impl.jdbcjobstore.JobStoreTX");
// 集群配置：如果有多个调度器实体的话则必须设置为true
prop.put("org.quartz.jobStore.isClustered", "true");
// 集群配置：检查集群下的其他调度器实体的时间间隔
prop.put("org.quartz.jobStore.clusterCheckinInterval", "15000");
// 设置一个频度(毫秒)，用于实例报告给集群中的其他实例
prop.put("org.quartz.jobStore.maxMisfiresToHandleAtATime", "1");
// 触发器触发失败后再次触犯的时间间隔
prop.put("org.quartz.jobStore.misfireThreshold", "12000");
// 数据库表前缀
prop.put("org.quartz.jobStore.tablePrefix", "qrtz_");
// 从 LOCKS 表查询一行并对这行记录加锁的 SQL 语句
prop.put("org.quartz.jobStore.selectWithLockSQL", "SELECT * FROM {0}LOCKS UPDLOCK WHERE LOCK_NAME = ?");
// 定时器工厂配置
SchedulerFactoryBean factory = new SchedulerFactoryBean();
factory.setDataSource(dataSource);
factory.setQuartzProperties(prop);
factory.setSchedulerName("HuskyScheduler");
factory.setStartupDelay(30);
factory.setApplicationContextSchedulerContextKey("applicationContextKey");
// 可选，QuartzScheduler 启动时更新己存在的Job
factory.setOverwriteExistingJobs(true);
// 设置自动启动，默认为true
factory.setAutoStartup(true);
return factory;
}
}import com.quart.job.entity.ScheduleJobBean;
import org.quartz.*;
/**
* 定时器工具类
*/
public class ScheduleUtil {
private ScheduleUtil (){}
private static final String SCHEDULE_NAME = "HUSKY_" ;
/**
* 触发器 KEY
*/
public static TriggerKey getTriggerKey(Long jobId){
return TriggerKey.triggerKey(SCHEDULE_NAME+jobId) ;
}
/**
* 定时器 Key
*/
public static JobKey getJobKey (Long jobId){
return JobKey.jobKey(SCHEDULE_NAME+jobId) ;
}
/**
* 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 RuntimeException("getCronTrigger Fail",e) ;
}
}
/**
* 创建定时器
*/
public static void createJob (Scheduler scheduler, ScheduleJobBean scheduleJob){
try {
// 构建定时器
JobDetail jobDetail = JobBuilder.newJob(TaskJobLog.class).withIdentity(getJobKey(scheduleJob.getJobId())).build() ;
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder
.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing() ;
CronTrigger trigger = TriggerBuilder.newTrigger()
.withIdentity(getTriggerKey(scheduleJob.getJobId()))
.withSchedule(scheduleBuilder).build() ;
jobDetail.getJobDataMap().put(ScheduleJobBean.JOB_PARAM_KEY,scheduleJob);
scheduler.scheduleJob(jobDetail,trigger) ;
// 如果该定时器处于暂停状态
if (scheduleJob.getStatus() == 1){
pauseJob(scheduler,scheduleJob.getJobId()) ;
}
} catch (SchedulerException e){
throw new RuntimeException("createJob Fail",e) ;
}
}
/**
* 更新定时任务
*/
public static void updateJob(Scheduler scheduler, ScheduleJobBean scheduleJob) {
try {
// 构建定时器
TriggerKey triggerKey = getTriggerKey(scheduleJob.getJobId());
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing();
CronTrigger trigger = getCronTrigger(scheduler, scheduleJob.getJobId());
trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
trigger.getJobDataMap().put(ScheduleJobBean.JOB_PARAM_KEY, scheduleJob);
scheduler.rescheduleJob(triggerKey, trigger);
// 如果该定时器处于暂停状态
if(scheduleJob.getStatus() == 1){
pauseJob(scheduler, scheduleJob.getJobId());
}
} catch (SchedulerException e) {
throw new RuntimeException("updateJob Fail",e) ;
}
}
/**
* 停止定时器
*/
public static void pauseJob (Scheduler scheduler,Long jobId){
try {
scheduler.pauseJob(getJobKey(jobId));
} catch (SchedulerException e){
throw new RuntimeException("pauseJob Fail",e) ;
}
}
/**
* 恢复定时器
*/
public static void resumeJob (Scheduler scheduler,Long jobId){
try {
scheduler.resumeJob(getJobKey(jobId));
} catch (SchedulerException e){
throw new RuntimeException("resumeJob Fail",e) ;
}
}
/**
* 删除定时器
*/
public static void deleteJob (Scheduler scheduler,Long jobId){
try {
scheduler.deleteJob(getJobKey(jobId));
} catch (SchedulerException e){
throw new RuntimeException("deleteJob Fail",e) ;
}
}
/**
* 执行定时器
*/
public static void run (Scheduler scheduler, ScheduleJobBean scheduleJob){
try {
JobDataMap dataMap = new JobDataMap() ;
dataMap.put(ScheduleJobBean.JOB_PARAM_KEY,scheduleJob);
scheduler.triggerJob(getJobKey(scheduleJob.getJobId()),dataMap);
} catch (SchedulerException e){
throw new RuntimeException("run Fail",e) ;
}
}
}import com.quart.job.entity.ScheduleJobBean;
import com.quart.job.entity.ScheduleJobLogBean;
import com.quart.job.service.ScheduleJobLogService;
import org.quartz.JobExecutionContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.quartz.QuartzJobBean;
import java.lang.reflect.Method;
import java.util.Date;
/**
* 定时器执行日志记录
*/
public class TaskJobLog extends QuartzJobBean {
private static final Logger LOG = LoggerFactory.getLogger(TaskJobLog.class) ;
@Override
protected void executeInternal(JobExecutionContext context) {
ScheduleJobBean jobBean = (ScheduleJobBean)context.getMergedJobDataMap().get(ScheduleJobBean.JOB_PARAM_KEY) ;
ScheduleJobLogService scheduleJobLogService = (ScheduleJobLogService)SpringContextUtil.getBean("scheduleJobLogService") ;
// 定时器日志记录
ScheduleJobLogBean logBean = new ScheduleJobLogBean () ;
logBean.setJobId(jobBean.getJobId());
logBean.setBeanName(jobBean.getBeanName());
logBean.setParams(jobBean.getParams());
logBean.setCreateTime(new Date());
long beginTime = System.currentTimeMillis() ;
try {
// 加载并执行定时器的 run 方法
Object target = SpringContextUtil.getBean(jobBean.getBeanName());
Method method = target.getClass().getDeclaredMethod("run", String.class);
method.invoke(target, jobBean.getParams());
long executeTime = System.currentTimeMillis() - beginTime;
logBean.setTimes((int)executeTime);
logBean.setStatus(0);
LOG.info("定时器 === >> "+jobBean.getJobId()+"执行成功,耗时 === >> " + executeTime);
} catch (Exception e){
// 异常信息
long executeTime = System.currentTimeMillis() - beginTime;
logBean.setTimes((int)executeTime);
logBean.setStatus(1);
logBean.setError(e.getMessage());
} finally {
scheduleJobLogService.insert(logBean) ;
}
}
}@Service
public class ScheduleJobServiceImpl implements ScheduleJobService {
@Resource
private Scheduler scheduler ;
@Resource
private ScheduleJobMapper scheduleJobMapper ;
/**
* 定时器初始化
*/
@PostConstruct
public void init (){
ScheduleJobExample example = new ScheduleJobExample() ;
List scheduleJobBeanList = scheduleJobMapper.selectByExample(example) ;
for (ScheduleJobBean scheduleJobBean : scheduleJobBeanList) {
CronTrigger cronTrigger = ScheduleUtil.getCronTrigger(scheduler,scheduleJobBean.getJobId()) ;
if (cronTrigger == null){
ScheduleUtil.createJob(scheduler,scheduleJobBean);
} else {
ScheduleUtil.updateJob(scheduler,scheduleJobBean);
}
}
}
} @Override
@Transactional(rollbackFor = Exception.class)
public int insert(ScheduleJobBean record) {
ScheduleUtil.createJob(scheduler,record);
return scheduleJobMapper.insert(record);
}@Override
@Transactional(rollbackFor = Exception.class)
public void run(Long jobId) {
ScheduleJobBean scheduleJobBean = scheduleJobMapper.selectByPrimaryKey(jobId) ;
ScheduleUtil.run(scheduler,scheduleJobBean);
}@Override
@Transactional(rollbackFor = Exception.class)
public int updateByPrimaryKeySelective(ScheduleJobBean record) {
ScheduleUtil.updateJob(scheduler,record);
return scheduleJobMapper.updateByPrimaryKeySelective(record);
}@Override
@Transactional(rollbackFor = Exception.class)
public void pauseJob(Long jobId) {
ScheduleJobBean scheduleJobBean = scheduleJobMapper.selectByPrimaryKey(jobId) ;
ScheduleUtil.pauseJob(scheduler,jobId);
scheduleJobBean.setStatus(1);
scheduleJobMapper.updateByPrimaryKeySelective(scheduleJobBean) ;
}@Override
@Transactional(rollbackFor = Exception.class)
public void resumeJob(Long jobId) {
ScheduleJobBean scheduleJobBean = scheduleJobMapper.selectByPrimaryKey(jobId) ;
ScheduleUtil.resumeJob(scheduler,jobId);
scheduleJobBean.setStatus(0);
scheduleJobMapper.updateByPrimaryKeySelective(scheduleJobBean) ;
}@Override
@Transactional(rollbackFor = Exception.class)
public void delete(Long jobId) {
ScheduleUtil.deleteJob(scheduler, jobId);
scheduleJobMapper.deleteByPrimaryKey(jobId) ;
}public interface TaskService {
void run(String params);
}@Component("getTimeTask")
public class GetTimeTask implements TaskService {
private static final Logger LOG = LoggerFactory.getLogger(GetTimeTask.class.getName()) ;
private static final SimpleDateFormat format =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss") ;
@Override
public void run(String params) {
LOG.info("Params === >> " + params);
LOG.info("当前时间::::"+format.format(new Date()));
}
}以上就是SpringBoot2 中怎么使用 QuartJob 实现定时器实时管理，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。