@Scheduled设置线程池

可以通过配置线程池来实现@Scheduled注解的定时任务的多线程处理。以下是两种实现方式：

1.在@Configuration类中配置ThreadPoolTaskExecutor：

@Configuration
@EnableScheduling
public class ScheduleConfig {

    @Bean
    public ThreadPoolTaskExecutor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(10); // 设置核心线程数
        executor.setMaxPoolSize(20); // 设置最大线程数
        executor.setQueueCapacity(200); // 设置队列容量
        executor.setKeepAliveSeconds(60); // 设置线程空闲时间
        executor.setThreadNamePrefix("taskExecutor-"); // 设置线程名前缀
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy()); // 设置拒绝策略
        return executor;
    }
}

2.在@Scheduled注解中指定线程池：

@Component
public class ScheduledTask {

    @Autowired
    private ThreadPoolTaskExecutor taskExecutor;

    @Scheduled(cron = "0/5 * * * * ?")
    public void task() {
        taskExecutor.execute(() -> {
            // 任务逻辑
        });
    }
}