RabbitTemplate 连接到 RabbitMQ：获取 - NOT_FOUND - 没有队列

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使用。

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)

我遇到异常：

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

找到解决方案了！

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。

如果您使用 Spring Boot，它会自动为您注册模板和管理员。

Answer 2

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);
}