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，而后建立具体的任务类，在方法上添加@Scheduled注解，并指明执行频率便可。以下：

@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：建立一个继承了QuartzJobBean的任务类，同时建立quarz配置类，以向spring容器中注入JobDetail和Trigger。以下：

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...");
    }
}

@Configurationpublic 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();    }}