springboot实现定时任务的两种方式

 方式一：在springboot启动类上添加@EnableScheduling注解，然后创建具体的任务类，在方法上添加@Scheduled注解，并指明执行频率即可。如下：

@Component
public class TestJob {

    private final Logger logger = LoggerFactory.getLogger(TestJob.class);

    @Scheduled(cron = "*/3 * * * * *")
    public void testJob() {
        logger.info("Job Test...");
    }
}

方式二：创建一个继承了QuartzJobBean的任务类，同时创建quarz配置类，以向spring容器中注入JobDetail和Trigger。如下：

public class Test2Job extends QuartzJobBean {

    private final Logger logger = LoggerFactory.getLogger(Test2Job.class);
    @Override
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
        logger.info("Test2 Job...");
    }
}

@Configuration
public class ScheculerConfiguration {

    @Bean
    public JobDetail jobDetail() {
        return JobBuilder.newJob(Test2Job.class)
                .withIdentity("test2Job")
                .storeDurably()
                .build();
    }

    @Bean
    public Trigger jobTrigger() {
        ScheduleBuilder scheduleBuilder = SimpleScheduleBuilder.simpleSchedule()
                .withIntervalInMilliseconds(3)
                .repeatForever();
        return TriggerBuilder.newTrigger()
                .withIdentity("test2JobTrigger")
                .forJob(jobDetail())
                .withSchedule(scheduleBuilder)
                .build();
    }
}