Question

我正在尝试创建一个动态消息监听器并将其放入spring容器中。我在我的spring xml文件中有一些Spring配置的监听器，它们完美无缺。但我的代码听众不会:(

这就是我所做的。

DefaultListableBeanFactory factory = (DefaultListableBeanFactory) appContext.getAutowireCapableBeanFactory();

    Object queue = null;
    try {
        queue = appContext.getBean(queueName);
    } catch (BeansException e) {
    }
    if(queue==null) {
        BeanDefinitionBuilder queueBuilder = BeanDefinitionBuilder.rootBeanDefinition(ActiveMQQueue.class);
        queueBuilder.addConstructorArgValue(queueName);
        factory.registerBeanDefinition(queueName,queueBuilder.getBeanDefinition());
    }

    // creating listener bean

    String listenerName = "dynamicListener";
    BeanDefinitionBuilder listenerBuilder = BeanDefinitionBuilder.rootBeanDefinition(listener);
    factory.registerBeanDefinition(listenerName,listenerBuilder.getBeanDefinition());

    // creating adapter bean
    String beanName = "dynamicAdapterListener";
    BeanDefinitionBuilder listenerAdapterBuilder = BeanDefinitionBuilder.rootBeanDefinition(MessageListenerAdapter.class);
    listenerAdapterBuilder.addPropertyReference("delegate", listenerName);
    listenerAdapterBuilder.addPropertyValue("defaultListenerMethod", null);
    factory.registerBeanDefinition(beanName,listenerAdapterBuilder.getBeanDefinition());

    //creating container bean 
    BeanDefinitionBuilder listenerContainerBuilder = BeanDefinitionBuilder
            .rootBeanDefinition(DefaultMessageListenerContainer.class);
    listenerContainerBuilder.addPropertyValue("destinationName", queueName);
    listenerContainerBuilder.addPropertyReference("connectionFactory", "connectionFactory");
    listenerContainerBuilder.addPropertyReference("messageListener", beanName);
    listenerContainerBuilder.addPropertyValue("concurrency", String.valueOf(concurrency));
    listenerContainerBuilder.addPropertyValue("cacheLevelName", "CACHE_AUTO");
    listenerContainerBuilder.addPropertyValue("autoStartup", true);
    listenerContainerBuilder.addPropertyValue("sessionAcknowledgeMode", 1);
    String containerName = "listenerContainer";
    factory.registerBeanDefinition(containerName, listenerContainerBuilder.getBeanDefinition());
    DefaultMessageListenerContainer bean = (DefaultMessageListenerContainer) appContext.getBean(containerName);
    // i even initialized bean to make sure it works but does'nt:( 
    bean.afterPropertiesSet(); // which initialized bean

创建所有bean并将其注入Spring ApplicationContext;但是监听器不会监听指定的队列。

任何想法如何在运行时创建Queue / Listener / Container / all？

如何在Spring中创建动态MessageListener？

0 个答案: