java - 使用单个 Spring Boot 应用程序收听多个 IBM MQ

Question

我需要收听多个队列(存在于同一个队列管理器中)。我有用于监听单个队列的有效 Spring Boot 应用程序代码。但是有什么方法可以从单个 Spring Boot 应用程序连接到多个队列吗？

如果我可以在运行时将监听器从一个队列切换到另一个队列，还有吗？

我有从单个队列中读取的代码，如下所示:

public class ConnectionConfiguration {

  private static final Logger logger = LogManager.getLogger(ConnectionConfiguration.class);

  @Value("${LDR_LOCAL_MQ_READ_FACTORYNAME}")
  String connectionFactory;

  @Value("${LDR_LOCAL_MQ_QUEUENAME}")
  String localQueue;

  @Value("${jmsConcurrency}")
  String concurrency;

  @Value("${servers.mq.host}")
  private String host;

  @Value("${servers.mq.port}")
  private Integer port;

  @Value("${servers.mq.queue-manager}")
  private String queueManager;

  @Value("${servers.mq.channel}")
  private String channel;

  @Value("${servers.mq.queue}")
  private String queue;

  @Value("${servers.mq.timeout}")
  private long timeout;

  @Bean
  public ConnectionFactory connectionFactory() {

    JndiObjectFactoryBean jndiObjectFactoryBean = new JndiObjectFactoryBean();
    jndiObjectFactoryBean.setResourceRef(true);
    jndiObjectFactoryBean.setJndiName(connectionFactory);
    try {
      jndiObjectFactoryBean.afterPropertiesSet();
    } catch (IllegalArgumentException e) {
      logger.error(e.getMessage(), e);
      e.printStackTrace();
    } catch (NamingException e) {
      logger.error(e.getMessage(), e);
      e.printStackTrace();
    }
    return (ConnectionFactory) jndiObjectFactoryBean.getObject();
  }

  @Bean
  public MQQueueConnectionFactory mqQueueConnectionFactory() {
    MQQueueConnectionFactory mqQueueConnectionFactory = new MQQueueConnectionFactory();
    try {
      mqQueueConnectionFactory.setHostName(host);
      mqQueueConnectionFactory.setQueueManager(queueManager);
      mqQueueConnectionFactory.setPort(port);
      mqQueueConnectionFactory.setChannel(channel);
      mqQueueConnectionFactory.setTransportType(WMQConstants.WMQ_CM_CLIENT);
      mqQueueConnectionFactory.setCCSID(1208);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return mqQueueConnectionFactory;
  }

  @Bean
  public SimpleMessageListenerContainer queueContainer(MQQueueConnectionFactory mqQueueConnectionFactory) {

    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
    container.setConnectionFactory(mqQueueConnectionFactory);
    container.setDestinationName(queue);
    container.setMessageListener(getListenerWrapper());
    container.start();
    return container;
  }

  @Bean
  public MQListener getListenerWrapper() {
    return new MQListener();
  }

  @Bean
  public JmsTemplate getJmsTemplate() {
    try {
      return new JmsTemplate(mqQueueConnectionFactory());
    } catch (Exception exp) {
      logger.error(exp.getMessage(), exp);
    }
    return null;
  }

}

Answer 1

只需为每个队列添加一个监听器容器 bean。

要更改队列，请调用 stop() ，然后 shutdown() ，更改目的地，然后 initialize() ，然后 start() .