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

2. 建立異步任務(wù)類

我們建了3個(gè)異步任務(wù)，分別延遲1s，2s，3s

@Component
public class AsyncTask {
    @Async
    public void task1() throws InterruptedException{
        long currentTimeMillis = System.currentTimeMillis();
        Thread.sleep(1000);
        long currentTimeMillis1 = System.currentTimeMillis();
        System.out.println("task1任務(wù)耗時(shí):"+(currentTimeMillis1-currentTimeMillis)+"ms");
    }
    @Async
    public void task2() throws InterruptedException{
        long currentTimeMillis = System.currentTimeMillis();
        Thread.sleep(2000);
        long currentTimeMillis1 = System.currentTimeMillis();
        System.out.println("task2任務(wù)耗時(shí):"+(currentTimeMillis1-currentTimeMillis)+"ms");
    }
    @Async
    public void task3() throws InterruptedException{
        long currentTimeMillis = System.currentTimeMillis();
        Thread.sleep(3000);
        long currentTimeMillis1 = System.currentTimeMillis();
        System.out.println("task3任務(wù)耗時(shí):"+(currentTimeMillis1-currentTimeMillis)+"ms");
    }
}

3. 建立測(cè)試接口

@RestController
@RequestMapping("/test")
public class TestController {
    @Autowired
    private AsyncTask asyncTask;
    @RequestMapping("/async")
    public String doTask() throws InterruptedException{
        long currentTimeMillis = System.currentTimeMillis();
        asyncTask.task1();
        asyncTask.task2();
        asyncTask.task3();
        long currentTimeMillis1 = System.currentTimeMillis();
        return "task任務(wù)總耗時(shí):"+(currentTimeMillis1-currentTimeMillis)+"ms";
    }
}

啟動(dòng)SpringBoot服務(wù)，訪問/test/async接口，能看到任務(wù)耗時(shí)只有1s

在這里插入圖片描述