Question

我有一个带有@Async注释的服务。从另一个服务调用时，可以在threadExecutor中正确处理它，但如果从带有requestmapping的控制器中调用，则不能正确处理

@Service
public class StartupService implements ApplicationListener<ContextRefreshedEvent> {
    private static Logger LOGGER = LoggerFactory.getLogger(StartupService.class);
    @Autowired
    StockService stockService;

    @Override
    public void onApplicationEvent(final ContextRefreshedEvent event) {
        if(event.getApplicationContext().getParent() == null) {
            LOGGER.debug("stockService.load call begin " + Thread.currentThread().getName());
            stockService.reload();
            LOGGER.debug("stockService.load call end " + Thread.currentThread().getName());
        }
    }
}

@Controller
@RequestMapping(value = "/api")
public class ApiController {
    private static Logger LOGGER = LoggerFactory.getLogger(ApiController.class);
    @Autowired
    StockService stockService;

    @ResponseStatus(value = HttpStatus.OK)
    @RequestMapping(value = "/reload.do", method = RequestMethod.GET)
    public void reloadStock() {
        LOGGER.debug("stockService.load call begin " + Thread.currentThread().getName());
        stockService.reload();
        LOGGER.debug("stockService.load call end " + Thread.currentThread().getName());
    }
}

@Service
public class StockService {
    private static Logger LOGGER = LoggerFactory.getLogger(StockService.class);

    @Async
    public void reload() {
        LOGGER.debug("stockService.load run begin " + Thread.currentThread().getName());
        //do the magic stuff
        LOGGER.debug("stockService.load run end " + Thread.currentThread().getName());
    }
}

输出如下。从StockService中的StartupService方法调用时，将在已配置的执行程序中调用。当从StockService中的ApiController方法调用时，在同一线程中调用

DEBUG [StartupService]: stockService.load call begin http-apr-8080-exec-70
DEBUG [StartupService]: stockService.load call end http-apr-8080-exec-70
DEBUG [StockService]: stockService.load run begin stockexecutor-1
DEBUG [StockService]: stockService.load run end stockexecutor-1

DEBUG [ApiController]: stockService.load call begin http-apr-8080-exec-85
DEBUG [StockService]: stockService.load run begin http-apr-8080-exec-85
DEBUG [StockService]: stockService.load run end http-apr-8080-exec-85
DEBUG [ApiController]: stockService.load call end http-apr-8080-exec-85

Answer 1

只需重新发布@ M.Deinum的答案即可将其标记为正确答案，因为它对我有很大帮助。

然后，您有2个服务实例，一个实例代理异步，另一个实例不代理。您可能有ContextLoaderListener加载了与DispatcherServlet有效复制bean实例相同的组件

问题是，我在spring-mvc-servlet.xml和applicationContext.xml中使用了组件扫描以查找相同的包

请求未异步处理

1 个答案: