Springboot项目中定时任务的四种实现方式详解

@Component
public class ScheduledTasks {
    @Scheduled(fixedRate = 5000) // 每隔5秒执行一次
    public void task1() {
        // 定时任务逻辑
    }
    @Scheduled(fixedDelay = 10000) // 上次执行结束后延迟10秒再执行
    public void task2() {
        // 定时任务逻辑
    }
    @Scheduled(initialDelay = 5000, fixedRate = 10000) // 延迟5秒后，每隔10秒执行一次
    public void task3() {
        // 定时任务逻辑
    }
}

@Component
public class ScheduledTasks {
    @Scheduled(cron = "0 0 0 * * ?") // 每天零点执行
    public void task4() {
        // 定时任务逻辑
    }
    @Scheduled(cron = "0 0 12 * * MON-FRI") // 每个工作日中午12点执行
    public void task5() {
        // 定时任务逻辑
    }
}

@SpringBootApplication
@EnableScheduling
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

@Configuration
@EnableScheduling
public class ScheduledConfig implements SchedulingConfigurer {
    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.addTriggerTask(
            () -> {
                // 定时任务逻辑
            },
            triggerContext -> {
                CronTrigger cronTrigger = new CronTrigger("0 0 0 * * ?"); // 每天零点执行
                return cronTrigger.nextExecutionTime(triggerContext);
            }
        );
    }
}

@Configuration
public class QuartzConfig {
    @Bean
    public SchedulerFactoryBean schedulerFactoryBean() {
        SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
        // 其他配置
        return schedulerFactoryBean;
    }
}

@Component
public class MyJob implements Job {
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        // 定时任务逻辑
    }
}
@Configuration
public class QuartzConfig {
    @Bean
    public JobDetail myJobDetail() {
        return JobBuilder.newJob(MyJob.class)
            .withIdentity("myJob")
            .storeDurably()
            .build();
    }
    @Bean
    public Trigger myTrigger() {
        return TriggerBuilder.newTrigger()
            .forJob(myJobDetail())
            .withIdentity("myTrigger")
            .withSchedule(CronScheduleBuilder.cronSchedule("0 0 0 * * ?")) // 每天零点执行
            .build();
    }
}