异步任务demo(多线程)

启动类开启异步功能

@EnableAsync
@SpringBootApplication
public class AsynApplication {

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

}

在需要使用异步的类或者方法开启

@Service
public class
AsynService {
    @Async
    public  void asyn(){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("222222");
    }
}