Spring MVC如何获得运行异步任务的进度

Spring MVC如何获得运行异步任务的进度

您是否已查看Spring参考文档中的

@Async

注释？

首先，为您的异步任务创建一个bean：

@Servicepublic class AsyncServiceBean implements ServiceBean {    private AtomicInteger cn;    @Async    public void doSomething() {         // triggers the async task, which updates the cn status accordingly    }    public Integer getCn() {        return cn.get();    }}

接下来，从控制器调用它：

@Controllerpublic class YourController {    private final ServiceBean bean;    @Autowired    YourController(ServiceBean bean) {        this.bean = bean;    }    @RequestMapping(value = "/trigger")    void triggerAsyncJob() {        bean.doSomething();    }    @RequestMapping(value = "/status")    @ResponseBody    Map<String, Integer> fetchStatus() {        return Collections.singletonMap("cn", bean.getCn());    }        }

记住要相应地配置一个执行器，例如

<task:annotation-driven executor="myExecutor"/><task:executor id="myExecutor" pool-size="5"/>