Question

我使用RabbitMQ 3.6.10 UI发布使用Spring Integration AMQP 4.3.11的Java应用程序接收的消息。该消息是对使用Splitter创建的早期消息的回复，因此它具有sequenceSize和Number标头。我将这些标题复制到回复中，并将它们设置为RabbitMQ UI中的类型org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Message conversion failed at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:223) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:822) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:745) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$001(SimpleMessageListenerContainer.java:97) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$1.invokeListener(SimpleMessageListenerContainer.java:189) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.invokeListener(SimpleMessageListenerContainer.java:1276) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:726) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:1219) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:1189) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$1500(SimpleMessageListenerContainer.java:97) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1421) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalArgumentException: The 'sequenceNumber' header value must be an Integer. at org.springframework.util.Assert.isTrue(Assert.java:92) at org.springframework.integration.IntegrationMessageHeaderAccessor.verifyType(IntegrationMessageHeaderAccessor.java:143) at org.springframework.messaging.support.MessageHeaderAccessor.setHeader(MessageHeaderAccessor.java:298) at org.springframework.messaging.support.MessageHeaderAccessor.copyHeaders(MessageHeaderAccessor.java:389) at org.springframework.integration.support.MessageBuilder.copyHeaders(MessageBuilder.java:177) at org.springframework.integration.support.MessageBuilder.copyHeaders(MessageBuilder.java:47) at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.processMessage(AmqpInboundChannelAdapter.java:243) at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:203) ... 14 more。但是，在Java方面，我得到了例外：

sequenceNumber

我检查了Java端的sequenceSize和Long标头的类型是Integer，而不是Integer。然而，在RabbitMQ UI中没有选择来实现这一点。消息将由非Java应用程序发送，因此如何确保Spring Integration将标头识别为Integer？

当我使用Java客户端发布回复并将标头值设置为awk时，消费者会接受它们。因此，这可能是RabbitMQ UI的限制，没有足够具体的头类型（例如，32位与64位数）或Java客户端对期望值类型过于严格。任何人都可以确认其中一个吗？

Answer 1

将MessagePostProcessor添加到适配器的侦听器容器...

@Bean
public AmqpInboundChannelAdapter adapter(ConnectionFactory cf) {
    AmqpInboundChannelAdapter adapter = new AmqpInboundChannelAdapter(listenerContainer(cf));
    adapter.setOutputChannelName("someChannel");
    return adapter;
}

@Bean
public AbstractMessageListenerContainer listenerContainer(ConnectionFactory cf) {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(cf);
    container.setQueueNames("foo");
    container.setAfterReceivePostProcessors(m -> {
        if (m.getMessageProperties().getHeaders()
                .get(IntegrationMessageHeaderAccessor.SEQUENCE_NUMBER) instanceof Long) {
            Integer sequenceNumber = ((Long) m.getMessageProperties().getHeaders()
                    .get(IntegrationMessageHeaderAccessor.SEQUENCE_NUMBER)).intValue();
            m.getMessageProperties().getHeaders().put(IntegrationMessageHeaderAccessor.SEQUENCE_NUMBER,
                    sequenceNumber);
        }
        return m;
    });
    return container;
}

请打开JIRA Issue - 我们应该更宽容，特别是如果值<＆lt; Integer.MAX_VALUE。

＆＃39; sequenceNumber＆＃39;标头值必须是整数。但它很长

1 个答案: