这篇文章主要介绍了SpringBoot2整合QuartJob如何实现定时器实时管理功能，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
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1、一句话描述
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。
2、核心API
(1)、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。
(2)、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。
(3)、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。
(4)、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。
1、项目结构
版本描述
spring-boot：2.1.3.RELEASEquart-job：2.3.0
2、定时器配置
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;@Configurationpublic 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; }}
3、定时器管理工具
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) ; } }}
4、定时器执行和日志
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) ; } }}
1、定时器初始化
@Servicepublic 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
2、添加定时器
@Override@Transactional(rollbackFor = Exception.class)public int insert(ScheduleJobBean record) { ScheduleUtil.createJob(scheduler,record); return scheduleJobMapper.insert(record);}
3、立即执行一次定时器
@Override@Transactional(rollbackFor = Exception.class)public void run(Long jobId) { ScheduleJobBean scheduleJobBean = scheduleJobMapper.selectByPrimaryKey(jobId) ; ScheduleUtil.run(scheduler,scheduleJobBean);}
4、更新定时器
@Override@Transactional(rollbackFor = Exception.class)public int updateByPrimaryKeySelective(ScheduleJobBean record) { ScheduleUtil.updateJob(scheduler,record); return scheduleJobMapper.updateByPrimaryKeySelective(record);}
5、停止定时器
@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) ;}
6、恢复定时器
@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) ;}
7、删除定时器
@Override@Transactional(rollbackFor = Exception.class)public void delete(Long jobId) { ScheduleUtil.deleteJob(scheduler, jobId); scheduleJobMapper.deleteByPrimaryKey(jobId) ;}
四、配置一个测试的定时器
1、定时接口封装
public interface TaskService { void run(String params);}
2、测试定时器
@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())); }}
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