使用 Spring Integration 收到確認消息

Question

我有一個用例，我想在應用程序收到消息后立即確認消息，而不是等待流程完成。 流程如下。 當前，簡單消息偵聽器容器配置為 AUTO 確認模式。

    @Bean
    public IntegrationFlow processAggregateEventFlow(SimpleMessageListenerContainer messageListenerContainer,
                                                         @Qualifier("errorChannel") MessageChannel eventErrorChannel) {
    
            return IntegrationFlows
                    // Create message listener container and queueEvent error channel
                    .from(Amqp.inboundAdapter(messageListenerContainer).errorChannel(eventErrorChannel))
                    .transform(new JsonToObjectTransformer(Request.class, jacksonConfiguration.jsonObjectMapper()))
                    .filter(Request.class, e -> true)
                    .handle(requestMessageHandler)
                    .get();
        }

Answer 1

請參閱AcknowledgeMode.NONE並閱讀他們的 JavaDocs：

public enum AcknowledgeMode {

    /**
     * No acks - {@code autoAck=true} in {@code Channel.basicConsume()}.
     */
    NONE,

    /**
     * Manual acks - user must ack/nack via a channel aware listener.
     */
    MANUAL,

    /**
     * Auto - the container will issue the ack/nack based on whether
     * the listener returns normally, or throws an exception.
     * <p><em>Do not confuse with RabbitMQ {@code autoAck} which is
     * represented by {@link #NONE} here</em>.
     */
    AUTO;

使用MANUAL ，有幾個標題添加到來自該 AMQP 入站通道適配器的消息中：

            headers.put(AmqpHeaders.DELIVERY_TAG, deliveryTag);
            headers.put(AmqpHeaders.CHANNEL, channel);

所以你可以在from(Amqp)之后使用.handle() from(Amqp)來調用channel.basicAck(deliveryTag, false); . 在文檔中查看更多信息： https : //docs.spring.io/spring-integration/docs/current/reference/html/amqp.html#amqp-inbound-ack