Spring 不为 ServiceListFactoryBean 对象创建代理

Question

我正在使用 ServiceFactoryBean 和 ServiceListFactoryBean 收集一些 SPI 实现实例，并自动连接到我的服务 bean。现在我已经创建了一些方面来拦截这些类以测量性能和记录调用。

我注意到 spring 正在为 ServiceFactoryBean 捕获并注入服务 bean 的实例创建代理。但它不会为 ServiceListFactoryBean 捕获的实例列表创建任何代理。

我如何告诉 spring 为这些 bean 创建我的方面起作用的代理？

以下是我的代码片段-

收集 SPI 实现并公开它们以进行自动装配的配置

@Bean
public ServiceFactoryBean faceImageStorageProvider() {
    ServiceFactoryBean serviceFactoryBean = new ServiceFactoryBean();
    serviceFactoryBean.setServiceType(FaceImageStorageProvider.class);

    return serviceFactoryBean;
}

@Bean
public ServiceListFactoryBean notificationSenders() {
    ServiceListFactoryBean serviceListFactoryBean = new ServiceListFactoryBean();
    serviceListFactoryBean.setServiceType(NotificationSender.class);

    return serviceListFactoryBean;
}

方面（这个有效）

@Pointcut("execution(* com.xxx.spi.storage.FaceImageStorageProvider.*(..))")
private void anyFaceImageStorageProviderAPI() {}

（这个不行）

@Pointcut("execution(* com.xxx.spi.notification.NotificationSender.*(..))")
private void anyNotificationSenderAPI() {}

Answer 1

仅供参考，我通过以下方式以编程方式创建代理解决了这个问题 -

@Autowired
private NotificationPerformanceLogger notificationPerformanceLogger;

@Bean
public List<NotificationSender> notificationSenders() {
    LOGGER.info("Crating proxy for NotificationSender implementations");

    List<NotificationSender> senders = getAvailableNotificationSenders();
    LOGGER.debug("Found [{}] NotificationSender implementations", CollectionUtils.size(senders));

    return createProxiedNotificationSendersAsSpringWillNotCreateProxyForThese(senders);
}

private List<NotificationSender> getAvailableNotificationSenders() {
    List<NotificationSender> senders = new ArrayList<>();
    try {
        ServiceListFactoryBean serviceListFactoryBean = new ServiceListFactoryBean();
        serviceListFactoryBean.setServiceType(NotificationSender.class);
        serviceListFactoryBean.afterPropertiesSet();

        senders = (List<NotificationSender>) serviceListFactoryBean.getObject();
    } catch (Exception ex) {
        LOGGER.error("Unable to retrieve notification sender implementations", ex);
    }

    return senders;
}

private List<NotificationSender> createProxiedNotificationSendersAsSpringWillNotCreateProxyForThese(List<NotificationSender> notificationSenders) {
    List<NotificationSender> proxyNotificationSenders = new ArrayList<>();
    for (NotificationSender sender : notificationSenders) {
        proxyNotificationSenders.add(createAspectJProxy(sender));
    }

    return proxyNotificationSenders;
}

private NotificationSender createAspectJProxy(NotificationSender notificationSender) {
    AspectJProxyFactory aspectJProxyFactory = new AspectJProxyFactory(notificationSender);
    aspectJProxyFactory.addAspect(notificationPerformanceLogger);

    return aspectJProxyFactory.getProxy();
}

Spring 不为 ServiceListFactoryBean 对象创建代理

Spring Not Creating Proxy For ServiceListFactoryBean Objects

spring

aspect

serviceloader