Spring AMQP 集成 - 用户手册确认

我正在测试Spring-AMQP with Spring-Integration支持，我有以下配置和测试：

<rabbit:connection-factory id="connectionFactory" />
<rabbit:queue name="durableQ"/>
<int:channel id="consumingChannel">
    <int:queue capacity="2"/> <!-- Message get Acked as-soon-as filled in Q -->
</int:channel>

<int-amqp:inbound-channel-adapter 
    channel="consumingChannel"
    queue-names="durableQ" 
    connection-factory="connectionFactory"
    concurrent-consumers="1"
    acknowledge-mode="AUTO"
    />


public static void main(String[] args) {
System.out.println("Starting consumer with integration..");
    AbstractApplicationContext context = new ClassPathXmlApplicationContext(
    "classpath:META-INF/spring/integration/spring-integration-context-consumer.xml");

    PollableChannel consumingChannel = context.getBean("consumingChannel",   
                                                          PollableChannel.class);           
        int count = 0;
        while (true) {
            Message<?> msg = consumingChannel.receive(1000);
            System.out.println((count++) + " \t -> " + msg);

            try { //sleep to check number of messages in queue
                Thread.sleep(50000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

在此配置中，很明显，一旦消息到达consumingChannel它们被确认并因此从队列中删除。我通过放置一个高值来验证这一点sleep after receive并检查queue-size。对此没有进一步的控制。

现在如果我设置acknowledge-mode=MANUAL，似乎没有办法手动操作ack通过弹簧集成。

我的需要是处理消息并在处理后执行manual-ack所以直到ack消息仍然保留在durableQ.

有什么办法可以处理吗MANUAL确认spring-amqp-integration？我想避免通过ChannelAwareMessageListener to inbound-channel-adapter因为我想控制消费者receive.

Update:

使用自己的时甚至似乎不可能listener-container with inbound-channel-adapter:

// Below creates a default direct-channel (spring-integration channel) named "adapter", to receive poll this channel which is same as above
<int-amqp:inbound-channel-adapter id="adapter" listener-container="amqpListenerContainer" /> 

<bean id="amqpListenerContainer" class="org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer">
    <property name="connectionFactory" ref="connectionFactory" />
    <property name="queueNames" value="durableQ" />
    <property name="acknowledgeMode" value="MANUAL" />

// messageListener not allowed when using with adapter, so no way of having own ChannelAwareMessageListener, so no channel exposed onMessage, hence no way to ack
    <property name="messageListener" ref="listener"/>
</bean>
<bean id="listener" class="com.sd.springint.rmq.MsgListener"/>

上面的配置会引发错误messageListener不允许使用属性，请参阅标签上的内联注释。所以使用目的listner-container被击败（因为暴露channel via ChannelAwareMessageListener).

To me spring-integration不能用于manual-acknowledgement（我知道，这是一个很难说的说法！），任何人都可以帮助我验证这一点，或者是否有我所缺少的特定方法/配置？

问题是因为您正在使用异步切换QueueChannel。一般情况下控制容器内的并发比较好（concurrent-consumers="2"）并且不要在流程中进行任何异步切换（使用DirectChannels）。这样，AUTO ack 就可以正常工作了。而不是从接收PollableChannel订阅一个new MessageHandler() to a SubscribableChannel.

Update:

您通常不需要在 SI 应用程序中处理消息，但使用 DirectChannel 进行的测试相当于......

    SubscribableChannel channel = context.getBean("fromRabbit", SubscribableChannel.class);

    channel.subscribe(new MessageHandler() {

        @Override
        public void handleMessage(Message<?> message) throws MessagingException {
            System.out.println("Got " + message);
        }
    });