我有一个Spring @Configuration类,该类创建和注册RabbitMQ队列,如下所示:
@Amqp
@Configuration
public class AmqpConfiguration {
@Bean
ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory(HOST);
connectionFactory.setUsername(USERNAME);
connectionFactory.setPassword(PASSWORD);
connectionFactory.addConnectionListener(brokerListener);
return connectionFactory;
}
@Bean
SimpleMessageListenerContainer messageListenerContainer2(ConnectionFactory connectionFactory) {
SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
container.setQueues(activityQueue());
container.setMessageListener(listener);
container.setAcknowledgeMode(AcknowledgeMode.MANUAL);
container.setPrefetchCount(Props.getInt(ACTIVITY_QUEUE_PREFETCH_COUNT));
return container;
}
@Bean
AmqpAdmin amqpAdmin() {
return new RabbitAdmin(connectionFactory());
}
@Bean
Queue activityQueue() {
return new Queue(ACITVITY_QUEUE);
}
到目前为止,一切都很好。我可以毫无问题地创建一个activityQueue。
但是,现在我需要动态创建多个活动队列。因此,我将代码更改如下(仅显示了相关部分):
@Bean
SimpleMessageListenerContainer messageListenerContainer2(ConnectionFactory connectionFactory) {
SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
container.setQueues(getAllQueues());
container.setMessageListener(listener);
container.setAcknowledgeMode(AcknowledgeMode.MANUAL);
container.setPrefetchCount(Props.getInt(ACTIVITY_QUEUE_PREFETCH_COUNT));
return container;
}
@Bean
Queue[] getAllQueues() {
// Detail omitted
return queues.toArray(new Queue[queues.size()]);
}
但是,返回队列数组无济于事,它会引发以下异常:
[Thread=SimpleAsyncTaskExecutor-1] 2019-01-24 10:26:04,112 WARN : org.springframework.amqp.rabbit.listener.BlockingQueueConsumer - Reconnect failed; retries left=2
java.io.IOException
at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106)
at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102)
at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124)
at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:790)
at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:365)
at com.sun.proxy.$Proxy168.queueDeclarePassive(Unknown Source)
at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:237)
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:534)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; reason: {#method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'activityQueue-F865FD8C-7AB2ABAC-153D0A6B-5BE36001-10A075A6' in vhost '/', class-id=50, method-id=10), null, ""}
at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67)
at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33)
at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:343)
at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:216)
at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118)
... 11 more
所以我的问题是如何动态创建队列,例如activityQueueA,activityQueueB,activityQueueC等?
答案 0 :(得分:1)
从2.1版开始,您可以使用
@Bean
public Declarables qs() {
return new Declarables(
new Queue("q2", false, false, true),
new Queue("q3", false, false, true));
}
构造函数:
/**
* A collection of {@link Declarable} objects; used to declare multiple objects on the
* broker using a single bean declaration for the collection.
*
* @author Gary Russell
* @since 2.1
*/
public class Declarables {
public Declarables(Declarable... declarables)
public Declarables(Collection<Declarable> declarables)
具有2.0.x和1.7.x(reference manual)。
@Bean
public List<Queue> qs() {
return Arrays.asList(
new Queue("q2", false, false, true),
new Queue("q3", false, false, true)
);
}