SpringBoot创建定时任务的示例详解

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class Application {

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

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class ScheduledTasks {

	// 每5秒执行一次
	@Scheduled(fixedRate = 5000)
	public void doTaskEveryFiveSeconds() {
		System.out.println("任务每5秒执行一次：" + new Date());
	}

	// 每天的特定时间执行一次
	@Scheduled(cron = "0 0 12 * * ?") // 每天中午12点执行
	public void doTaskEveryDayAtNoon() {
		System.out.println("任务每天中午12点执行一次：" + new Date());
	}
}

spring.task.scheduling.pool.size=5 # 线程池大小，可以用 ${} 配置
spring.task.scheduling.thread-name-prefix=task-scheduler- # 线程名前缀

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;

@Configuration
public class SchedulerConfig {

	@Bean
	public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
		ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
		scheduler.setPoolSize(5);
		scheduler.setThreadNamePrefix("task-scheduler-");
		return scheduler;
	}
}