• 简单来说就是开启多线程

代码实现

• 主启动程序添加@EnableAsync

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

• service方法添加@Async

@Service
public class AsyncService {
    @Async
    public void hello(){
        System.out.println("处理数据中...");
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("处理完毕。");
    }
}