RabbitTemplate 连接到 RabbitMQ：获取 - NOT_FOUND - 无队列

Question

我是 Spring 新手，正在开发基于云的应用程序并尝试使用 RabbitTemplate 和 RabbitMQ。

我能够将数据存储到队列中。

rabbitTemplate.convertAndSend(QUEUE_NAME, msg);

但是当我使用从同一个队列接收数据时

rabbitTemplate.receiveAndConvert(QUEUE_NAME)

我遇到了异常：

ERR 原因：java.io.IOException 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] ERR 在 com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124) 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.ChannelN.basicGet(ChannelN.java:985) 的错误 2016-09-13T11:15:21.38+0530 [App/0] 在 sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）的错误 2016-09-13T11:15:21.38+0530 [App/0] 在 sun.reflect.NativeMethodAccessorImpl.invoke 的错误（NativeMethodAccessorImpl.java:62） 2016-09-13T11:15:21.38+0530 [App/0] 在 sun.reflect.DelegatingMethodAccessorImpl.invoke 出现错误（DelegatingMethodAccessorImpl.java:43） 2016-09-13T11:15:21.38+0530 [App/0] java.lang.reflect.Method.invoke (Method.java:498) 的错误 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:625) 2016-09-13T11:15:21.38+0530 [App/0] com.sun.proxy.$Proxy55.basicGet 的 ERR（未知来源） 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.core.RabbitTemplate$4.doInRabbit(RabbitTemplate.java:650) 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.core.RabbitTemplate$4.doInRabbit(RabbitTemplate.java:646) 2016-09-13T11:15:21.38+0530 [App/0] ERR 在 org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:1045) 2016-09-13T11:15:21.38+0530 [App/0] ERR ... 50 更多 2016-09-13T11:15:21.38+0530 [App/0] ERR 原因：com.rabbitmq.client.ShutdownSignalException：通道错误；协议方法：#method（reply-code=404，reply-text=NOT_FOUND - vhost '9cc1b4db-636e-4251-bb68-c7ed7f3be1d3' 中没有队列 'testqueue'，class-id=60，method-id=70） 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67) 处的错误 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33) 的错误 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply (AMQChannel.java:343) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:216) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] ERR ... 60 更多 2016-09-13T11:15:21.38+0530 [App/0] ERR 原因：com.rabbitmq.client.ShutdownSignalException：通道错误；协议方法：#method（reply-code=404，reply-text=NOT_FOUND - vhost '9cc1b4db-636e-4251-bb68-c7ed7f3be1d3' 中没有队列 'testqueue'，class-id=60，method-id=70） 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.ChannelN.asyncShutdown (ChannelN.java:478) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.ChannelN.processAsync 的错误（ChannelN.java:315） 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand (AMQChannel.java:144) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:91) 的 ERR 2016-09-13T11:15:21.38+0530 [App/0] ERR 在 com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:552)

我的代码：

@Configuration
@Profile("cloud")
public class RabbitConfig extends AbstractCloudConfig {

@Bean
public RabbitTemplate rabbitTemplate(){
    CachingConnectionFactory cachingConnectionFactory = (CachingConnectionFactory)connectionFactory().rabbitConnectionFactory();

    cachingConnectionFactory.setCacheMode(CachingConnectionFactory.CacheMode.CHANNEL);

    RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);

    return rabbitTemplate;
    }
}

我的控制器：

@RestController
@RequestMapping("mq")
public class MainController {

@Autowired
private RabbitTemplate rabbitTemplate;

private static final String QUEUE_NAME = "testqueue";

@RequestMapping(value = "/putinq/{msg}",method = RequestMethod.PUT)
public String storeMessage(@PathVariable("msg") String msg){
    String result = "";

    rabbitTemplate.setQueue(QUEUE_NAME);
    try {
        rabbitTemplate.convertAndSend(QUEUE_NAME, msg); // no exception
        Thread.sleep(3000);
        Object object = rabbitTemplate.receiveAndConvert(QUEUE_NAME); // getting exception here
          System.out.println("Received: "+object);
        result = "success";
    }catch(Exception ex){
        ex.printStackTrace();
    }

    return result;
}
}

更新的 RabbitConfig.java

@Configuration
@Profile("cloud")
public class RabbitConfig extends AbstractCloudConfig {

private static final String QUEUE_NAME = "testqueue";

@Bean
public RabbitTemplate rabbitTemplate(){
    CachingConnectionFactory cachingConnectionFactory = (CachingConnectionFactory)(connectionFactory().rabbitConnectionFactory());
    System.out.println("------------------------ Rabbit mq template: " + cachingConnectionFactory.getCacheMode());
    System.out.println("------------------------ cachingConnectionFactory.toString(): " + cachingConnectionFactory.toString());
    cachingConnectionFactory.setCacheMode(CachingConnectionFactory.CacheMode.CHANNEL);
    cachingConnectionFactory.setChannelCacheSize(25);
    System.out.println("----------after set-------------- Rabbit mq template: " + cachingConnectionFactory.getCacheMode());
    System.out.println("------------------------ cachingConnectionFactory.toString(): " + cachingConnectionFactory.getChannelCacheSize());
    RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);

    System.out.println("------------------------ Rabbit mq template: " + rabbitTemplate);
    return rabbitTemplate;
}

@Bean
public Queue myQueue() {
    System.out.println("--------------@@---------- creating queue: ");
    final boolean isDurable = true;
    final boolean isExclusive = false;
    final boolean autoDelete = false;
    return new Queue(QUEUE_NAME, isDurable, isExclusive, autoDelete);
}


}

我尝试在互联网上搜索此问题，但仍然无法解决问题，长期与此异常作斗争，感谢任何帮助。

找到解决方案！

CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory();
    cachingConnectionFactory.setUsername("");
    cachingConnectionFactory.setPassword("");
    cachingConnectionFactory.setVirtualHost("");
    cachingConnectionFactory.setHost("");
    cachingConnectionFactory.setPort(1);
    cachingConnectionFactory.setRequestedHeartBeat(30);
    cachingConnectionFactory.setConnectionTimeout(30000);

    RabbitAdmin admin = new RabbitAdmin(cachingConnectionFactory());
    Queue queue = new Queue(QUEUE_NAME);
    admin.declareQueue(queue);
    TopicExchange exchange = new TopicExchange(EXCHANGE_NAME);
    admin.declareExchange(exchange);   admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with(QUEUE_NAME));
RabbitTemplate template = new RabbitTemplate(cachingConnectionFactory());

Answer 1

您需要 RabbitAdmin @Bean 来声明队列/绑定 - 它会自动查找这些类型的 bean 并在建立连接时在代理上声明它们。

如果你使用 Spring Boot，它会自动为你注册一个模板和管理员。

Answer 2

你需要绑定你的队列和exchage，请试试下面这个RabbitmqConfig

@Configuration
public class RabbitmqConfig  {
    private static final String QUEUE_NAME = "testqueue";

    @Bean
    Queue queue() {
        return new Queue(QUEUE_NAME, false);
    }

    @Bean
    TopicExchange exchange() {
        return new TopicExchange("spring-boot-exchange", true, false);
    }

    @Bean
    Binding binding(Queue queue, TopicExchange exchange) {
        return BindingBuilder.bind(queue).to(exchange).with(QUEUE_NAME);
    }
}

Answer 3

您需要在配置中定义队列本身。

@Bean
public org.springframework.amqp.core.Queue myQueue() {
    final boolean isDurable = true;
    final boolean isExclusive = false;
    final boolean autoDelete = false;
    return new org.springframework.amqp.core.Queue(QUEUE_NAME, isDurable, isExclusive, autoDelete);
}