1、maven引入quartz包
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<!-- https: //mvnrepository.com/artifact/org.quartz-scheduler/quartz --> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version> 2.3 . 2 </version> </dependency> |
2、创建定时任务工厂类
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/** * 定时任务工厂类 */ @Component public class JobFactory extends SpringBeanJobFactory implements ApplicationContextAware {
private transient AutowireCapableBeanFactory beanFactory;
@Override protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception { final Object jobInstance = super .createJobInstance(bundle); beanFactory.autowireBean(jobInstance); return jobInstance; }
@Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this .beanFactory = applicationContext.getAutowireCapableBeanFactory(); }
} |
3、创建定时任务抽象类
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public abstract class AbstractTask implements Job {
private Logger logger = LoggerFactory.getLogger(AbstractTask. class );
protected abstract void executeInternal(JobExecutionContext context) throws Exception;
/** * 定时任务标识 */ private String key;
/** * 数据库里配置的主键id */ private Long dataBaseId;
@Override public void execute(JobExecutionContext context) { try { executeInternal(context); } catch (Exception e) { logger.error(e.getMessage(), e); logger.error( "job execute failed!" ); } }
public String getKey() { return key; }
public void setKey(String key) { this .key = key; }
public Long getDataBaseId() { return dataBaseId; }
public void setDataBaseId(Long dataBaseId) { this .dataBaseId = dataBaseId; } } |
4、创建定时任务业务实现类
这里可以写你的业务代码，实现具体的业务逻辑。
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@Component ( "JobTask" ) public class JobTask extends AbstractTask {
@Override protected void executeInternal(JobExecutionContext context) { System.out.println( "key = " + this .getKey()); System.out.println( "dataBaseId = " + this .getDataBaseId()); }
} |
5、创建定时任务管理器
包括项目启动时添加定时任务，手动添加定时任务，更新定时任务，删除定时任务方法。
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/** * 定时任务管理容器 component （单例模式） */ @Component @Scope ( "singleton" ) public class JobQuartzManager implements ApplicationContextAware {
/** * 创建新的scheduler */ private static SchedulerFactory schedulerFactory = new StdSchedulerFactory();
private Scheduler scheduler;
/** * 定义组名称，不同的组用于区分任务 */ private static final String JOB_GROUP_NAME = "JOB_GROUP_NAME" ;
private static final String TRIGGER_GROUP_NAME = "TRIGGER_GROUP_NAME" ;
/** * 日志 */ private Logger logger = LoggerFactory.getLogger(JobQuartzManager. class );
private ApplicationContext applicationContext;
@Autowired private JobFactory jobFactory;
public void start() { //启动定时任务（初始化） try { this .scheduler = schedulerFactory.getScheduler(); scheduler.setJobFactory(jobFactory); //设置定时任务工厂模式 //项目启动时默认给spring容器添加动态的定时任务 this .addJob( "job" + 100L, 100L, JobTask. class , "0/2 * * * * ?" ); } catch (SchedulerException e) { logger.error(e.getMessage(), e); throw new RuntimeException( "init Scheduler failed" ); } }
public boolean addJob(String jobName, Long dataBaseId, Class jobClass, String cronExp) { boolean result = false ; if (!CronExpression.isValidExpression(cronExp)) { logger.error( "Illegal cron expression format({})" , cronExp); return result; } try { JobDetail jobDetail = JobBuilder.newJob().withIdentity( new JobKey(jobName, JOB_GROUP_NAME)) .ofType((Class<AbstractTask>) Class.forName(jobClass.getName())) .build(); //创建完jobDetail之后，使用语句传参数值，方便定时任务内部识别它是什么标识 JobDataMap jobDataMap = jobDetail.getJobDataMap(); jobDataMap.put( "key" , jobName); jobDataMap.put( "dataBaseId" , dataBaseId); Trigger trigger = TriggerBuilder.newTrigger() .forJob(jobDetail) .withSchedule(CronScheduleBuilder.cronSchedule(cronExp)) .withIdentity( new TriggerKey(jobName, TRIGGER_GROUP_NAME)) .build(); scheduler.scheduleJob(jobDetail, trigger); scheduler.start(); result = true ; } catch (Exception e) { logger.error(e.getMessage(), e); logger.error( "QuartzManager add job failed" ); } return result; }
public boolean updateJob(String jobName, String cronExp) { boolean result = false ; if (!CronExpression.isValidExpression(cronExp)) { logger.error( "Illegal cron expression format({})" , cronExp); return result; } JobKey jobKey = new JobKey(jobName, JOB_GROUP_NAME); TriggerKey triggerKey = new TriggerKey(jobName, TRIGGER_GROUP_NAME); try { if (scheduler.checkExists(jobKey) && scheduler.checkExists(triggerKey)) { JobDetail jobDetail = scheduler.getJobDetail(jobKey); Trigger newTrigger = TriggerBuilder.newTrigger() .forJob(jobDetail) .withSchedule(CronScheduleBuilder.cronSchedule(cronExp)) .withIdentity( new TriggerKey(jobName, TRIGGER_GROUP_NAME)) .build(); scheduler.rescheduleJob(triggerKey, newTrigger); result = true ; } else { logger.error( "update job name:{},group name:{} or trigger name:{},group name:{} not exists.." , jobKey.getName(), jobKey.getGroup(), triggerKey.getName(), triggerKey.getGroup()); } } catch (SchedulerException e) { logger.error(e.getMessage(), e); logger.error( "update job name:{},group name:{} failed!" , jobKey.getName(), jobKey.getGroup()); } return result; }
public boolean deleteJob(String jobName) { boolean result = false ; JobKey jobKey = new JobKey(jobName, JOB_GROUP_NAME); try { if (scheduler.checkExists(jobKey)) { result = scheduler.deleteJob(jobKey); } else { logger.error( "delete job name:{},group name:{} not exists." , jobKey.getName(), jobKey.getGroup()); } } catch (SchedulerException e) { logger.error(e.getMessage(), e); logger.error( "delete job name:{},group name:{} failed!" , jobKey.getName(), jobKey.getGroup()); } return result; }
@Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this .applicationContext = applicationContext; }
} |
6、创建定时任务启动类
项目运行时给spring注入定时任务
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/** * 定时任务启动类 */ @Component public class JobRunner implements ApplicationRunner {
//注入定时任务管理器 @Autowired private JobQuartzManager quartzManager;
/** * 项目启动时激活定时任务 */ @Override public void run(ApplicationArguments applicationArguments) { System.out.println( "--------------------注入定时任务---------------------" ); quartzManager.start(); System.out.println( "--------------------定时任务注入完成---------------------" ); }
} |
7、测试案例
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@RestController @RequestMapping ( "/job" ) public class JobController {
@Autowired JobQuartzManager quartzManager;
@PostMapping ( "addJob" ) @ResponseBody public String addJob( @RequestParam ( "dataBaseId" ) Long dataBaseId, @RequestParam ( "cronExp" ) String cronExp){ boolean success = quartzManager.addJob( "job" + dataBaseId, dataBaseId, JobTask. class , cronExp); if (success){ return "添加成功" ; } else { return "添加失败！" ; } }
@PostMapping ( "deleteJob" ) @ResponseBody public String deleteJob( @RequestParam ( "jobName" ) String jobName){ boolean success = quartzManager.deleteJob(jobName); if (success){ return "删除成功" ; } else { return "删除失败！" ; } }
@PostMapping ( "updateJob" ) @ResponseBody public String updateJob( @RequestParam ( "jobName" ) String jobName, @RequestParam ( "cronExp" ) String cronExp){ boolean success = quartzManager.updateJob(jobName, cronExp); if (success){ return "更新成功" ; } else { return "更新失败！" ; } }
} |
总结
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原文链接：https://blog.csdn.net/SSM1234/article/details/113607799
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