RabbitMQ @RabbitListener注释在Spring中不起作用（不是spring-boot）

Question

我正在尝试在我的spring-core开发的应用程序中实现Rabbitmq。以下是我的pom.xml

    <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.2.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.rabbitmq</groupId>
            <artifactId>amqp-client</artifactId>
            <version>5.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-amqp</artifactId>
            <version>2.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-rabbit</artifactId>
            <version>2.2.7.RELEASE</version>
        </dependency>

这是我的RabbitConfiguration Java文件

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.MessageListenerContainer;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

@Configuration
public class RabbitConfiguration {
    public static final String QUEUE_NAME="MyQueue";
    public static final String EXCHANGE_NAME="My_EXCHANGE";


    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory =
                new CachingConnectionFactory("localhost");
        return connectionFactory;
    }

    @Bean
    public AmqpAdmin amqpAdmin() {
        return new RabbitAdmin(connectionFactory());
    }

    @Bean
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory());
        rabbitTemplate.setMessageConverter(jsonMessageConverter());
        return rabbitTemplate;
    }

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


   @Bean
   MessageListenerContainer messageListenerContainer() {
        SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer();
        simpleMessageListenerContainer.setConnectionFactory(connectionFactory());
        simpleMessageListenerContainer.setQueues(myQueue());
        simpleMessageListenerContainer.setMessageListener(new RabbitMQListner());
        return simpleMessageListenerContainer;
    }
    @Bean
    public MessageConverter jsonMessageConverter(){
        return new Jackson2JsonMessageConverter();
    }

}

这是我尝试使用Rabbit的服务类

import com.rabbitmq.client.*;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.amqp.core.ExchangeTypes;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import java.io.IOException;
@Component
public class MessagingService{
    public void send(String msg){
        template.convertAndSend(QUEUE_NAME,msg);
    }


    @RabbitListener(queues = "foo")
    public void receiveMessage(String car)
    {
        System.out.println("Hello"+car);
    }
    @Bean
    private ApplicationContext context(){
        return new AnnotationConfigApplicationContext(RabbitConfiguration.class);
    }

    @Bean
    private AmqpTemplate amqpTemplate(){
        return context().getBean(AmqpTemplate.class);
    }

    @Autowired
    protected AmqpTemplate template;

send方法工作正常。但是@Listener带注释的方法不起作用。它不听。我还尝试了一下，我创建了另一个配置文件并使用@EnableRabbit进行了注释，但是没有任何好处。有没有秘密的香肠可以使它起作用？

import org.springframework.amqp.rabbit.annotation.EnableRabbit;
import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@EnableRabbit
@Configuration
public class AppConfig extends RabbitConfiguration {
    @Bean
    public SimpleRabbitListenerContainerFactory myRabbitListenerContainerFactory() {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setConnectionFactory(connectionFactory());
        factory.setMaxConcurrentConsumers(5);
        factory.setMessageConverter(jsonMessageConverter());
        return factory;
    }
}

Answer 1

您是否使用相同的queue_name进行发送和收听？