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前面我们用Docker拉了rabbitMQ，并集成进了springboot，现在我们先写配置类：

package com.llpp.config;import com.llpp.service.impl.ImageServiceImpl;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class RabbitMQConfig {public static final String EXCHANGE_NAME = "image_processing_exchange";public static final String QUEUE_NAME = "image_processing_queue";public static final String ROUTING_KEY = "image.processing";@Autowiredprivate ConnectionFactory connectionFactory;@Beanpublic TopicExchange exchange() {return new TopicExchange(EXCHANGE_NAME);}@Beanpublic Queue queue() {return new Queue(QUEUE_NAME, true);}@Beanpublic Binding binding(Queue queue, TopicExchange exchange) {return BindingBuilder.bind(queue).to(exchange).with(ROUTING_KEY);}@Beanpublic SimpleMessageListenerContainer messageListenerContainer() {SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();container.setConnectionFactory(connectionFactory);container.setQueueNames(QUEUE_NAME);container.setMessageListener(new MessageListenerAdapter(new ImageServiceImpl()));return container;}
}