Spring Async Uncaught Exception处理程序

时间:2012-01-05 00:00:14

标签: java spring asynchronous exception-handling uncaughtexceptionhandler

@Override
@Async
public void asyncExceptionTest() {
    int i=1/0;
}

如何使用Spring Async框架记录此内容而无需在每个异步方法中放置try catch?它似乎没有像DefaultUncaughtExceptionHandler那样正常传递。

4 个答案:

答案 0 :(得分:19)

@Configuration
@EnableAsync
public class ExampleConfig implements AsyncConfigurer {
    @Bean
    public Runnable testExec() {
        return new TestExec();
    }

    @Override
    public Executor getAsyncExecutor() {
        final ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(7);
        executor.setMaxPoolSize(42);
        executor.setQueueCapacity(11);
        executor.setThreadNamePrefix("MyExecutor-");
        executor.initialize();
        return new HandlingExecutor(executor);
    }
}

public class HandlingExecutor implements AsyncTaskExecutor {
    private AsyncTaskExecutor executor;

    public HandlingExecutor(AsyncTaskExecutor executor) {
        this.executor = executor;
    }

    @Override
    public void execute(Runnable task) {
        executor.execute(task);
    }

    @Override
    public void execute(Runnable task, long startTimeout) {
        executor.execute(createWrappedRunnable(task), startTimeout);
    }

    @Override
    public Future<?> submit(Runnable task) {
        return executor.submit(createWrappedRunnable(task));
    }

    @Override
    public <T> Future<T> submit(final Callable<T> task) {
        return executor.submit(createCallable(task));
    }

    private <T> Callable<T> createCallable(final Callable<T> task) {
        return new Callable<T>() {
            @Override
            public T call() throws Exception {
                try {
                    return task.call();
                } catch (Exception e) {
                    handle(e);
                    throw e;
                }
            }
        };
    }

    private Runnable createWrappedRunnable(final Runnable task) {
        return new Runnable() {
            @Override
            public void run() {
                try {
                    task.run();
                } catch (Exception e) {
                    handle(e);
                }
            }
        };
    }

    private void handle(Exception e) {
        System.out.println("CAUGHT!");
    }
}

答案 1 :(得分:15)

更新:自春季4.1以来

从Spring 4.1开始,@Async void方法可能会AsyncUncaughtExceptionHandler

Spring Reference Doc,Chapter 34.4.5 Exception management with @Async

  

...但是,对于void返回类型,异常未被捕获且无法传输。对于这些情况,可以提供AsyncUncaughtExceptionHandler来处理此类异常。

     

默认情况下,只会记录异常。可以通过AsyncConfigurer或任务:注释驱动的XML元素定义自定义AsyncUncaughtExceptionHandler。

(这个功能是在DD提出一个支持请求后引入的:https://jira.spring.io/browse/SPR-8995,请参阅此答案的评论)


在春季4.1之前

看起来像是一个缺少的功能,如何处理void返回@Async方法的异常。 (我在参考或java文档中找不到任何提示)

我能想象出一个解决方案:尝试使用AspectJ来编写一些包含所有记录异常的@Async方法的包装器。

对于日志术语,我建议在spring bug tracker中创建一个freature请求。

答案 2 :(得分:6)

首先,您应该创建一个自定义异常处理程序类,如下所示;

@Component
public class AsyncExceptionHandler implements AsyncUncaughtExceptionHandler {

        private final Logger logger = LoggerFactory.getLogger(AsyncExceptionHandler.class);

        @Override
        public void handleUncaughtException(Throwable ex, Method method, Object... params) {
            logger.error("Unexpected asynchronous exception at : "
                    + method.getDeclaringClass().getName() + "." + method.getName(), ex);
        }

    }

之后,您应该在配置中设置自定义异常处理程序类,如下所示;

@Configuration
@EnableAsync
public class AsyncConfig extends AsyncConfigurerSupport {

    @Autowired
    private AsyncExceptionHandler asyncExceptionHandler;

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return asyncExceptionHandler;
    }

}

注意:可注入异常处理程序是一个选项。您可以为每个例外创建一个新实例。我的建议是使用Injection for exception handler class,因为spring的默认范围是singleton,因此不需要为每个异常创建新实例。

答案 3 :(得分:0)

您可以使用标准的 Spring AOP 方法

@Aspect
@Component
@Slf4j
public class AsyncHandler {

   @Around("@annotation(org.springframework.scheduling.annotation.Async)")
   private Object handle(ProceedingJoinPoint pjp) throws Throwable {
       try {
           Object retVal = pjp.proceed();
           return retVal;
       } catch (Throwable e) {
           log.error("in ASYNC, method: " + pjp.getSignature().toLongString() + ", args: " + AppStringUtils.transformToWellFormattedJsonString(pjp.getArgs()) + ", exception: "+ e, e);
           throw e;
       }
   }

}