RabbitMQ 固定回复和消费者配置

Question

我的目标是实现以下目标：php 代码将请求发送到队列 - java 代码从代码中读取 - java 代码将回复发送到固定回复队列 - php 代码读取回复。我已经设置了以下测试（生产者现在在 java 中）：

POJO：

public class PojoListener {

public String handleMessage(String foo) {
    System.out.println("IN MESSAGE RECEIVER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
    return foo.toUpperCase();
}
}

配置：

@Configuration
public class FixedReplyQueueConfig {

@Bean
public ConnectionFactory rabbitConnectionFactory() {
    CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
    connectionFactory.setHost("localhost");
    connectionFactory.setUsername("urbanbuz");
    connectionFactory.setPassword("ub");
    connectionFactory.setVirtualHost("urbanbuzvhost");

    return connectionFactory;
}  

/**
 * @return Rabbit template with fixed reply queue.
 */
@Bean
public RabbitTemplate fixedReplyQRabbitTemplate() {
    RabbitTemplate template = new RabbitTemplate(rabbitConnectionFactory());
    template.setExchange(ex().getName());
    template.setRoutingKey("test");
    template.setReplyQueue(replyQueue());
    return template;
}

/**
 * @return The reply listener container - the rabbit template is the listener.
 */
@Bean
public SimpleMessageListenerContainer replyListenerContainer() {
    SimpleMessageListenerContainer container = new SimpleMe ssageListenerContainer();
    container.setConnectionFactory(rabbitConnectionFactory());
    container.setQueues(replyQueue());
    container.setMessageListener(fixedReplyQRabbitTemplate());
    return container;
}

/**
 * @return The listener container that handles the request and returns the reply.
 */
@Bean
public SimpleMessageListenerContainer serviceListenerContainer() {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
    container.setConnectionFactory(rabbitConnectionFactory());
    container.setQueues(requestQueue());
    container.setMessageListener(new MessageListenerAdapter(new PojoListener()));
    return container;
}

/**
 * @return a non-durable auto-delete exchange.
 */
@Bean
public DirectExchange ex() {
    return new DirectExchange("ub.exchange", false, true);
}

@Bean
public Binding binding() {
    return BindingBuilder.bind(requestQueue()).to(ex()).with("test");
}

/**
 * @return an anonymous (auto-delete) queue.
 */
@Bean
public Queue requestQueue() {
    return new Queue("ub.request");
}

/**
 * @return an anonymous (auto-delete) queue.
 */
@Bean
public Queue replyQueue() {
    return new Queue("ub.reply");
}

/**
 * @return an admin to handle the declarations.
 */
@Bean
public RabbitAdmin admin() {
   return new RabbitAdmin(rabbitConnectionFactory());
}
}

在main方法中调用：

public class App {  
public static void main(String[] args) {        
    ApplicationContext context = new AnnotationConfigApplicationContext(FixedReplyQueueConfig.class);
    RabbitTemplate rabbitTemplate = context.getBean(RabbitTemplate.class);

    String response = (String) rabbitTemplate.convertSendAndReceive("yalla");
    System.out.println("response" + response);
}
}

我有两个问题：

当我运行它时，我收到以下错误：RabbitTemplate [ERROR] No correlation header in reply 虽然我看到两个队列都收到了消息。

第二个问题是我如何只运行消费者代码（监听器）而不发送消息（因为最终调用者不会是我的 java 代码）？

Answer 1

这看起来像是基于框架测试用例，显然有效。

您是否正在向 ub.reply 发送任何其他消息？是空的吗？

获取该日志消息的唯一方法是模板收到的回复没有正确填充相关 ID 属性。

您可以只运行应用程序并删除所有客户端代码，容器将侦听入站请求。