优惠券模块消费消息

a-rabbitMQ/coupon/pom.xml

@@ -18,4 +18,11 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-amqp</artifactId>
+        </dependency>
+    </dependencies>
+
 </project>

a-rabbitMQ/coupon/src/main/java/com/shun/coupon/config/RabbitMQConfig.java

@@ -0,0 +1,56 @@
+package com.shun.coupon.config;
+
+import org.springframework.amqp.core.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * @author 夜灬瞬
+ * @since 2023/6/21 21:08
+ */
+@Configuration
+public class RabbitMQConfig {
+
+    /**
+     * 下单服务的交换机
+     */
+    public static final String PLACE_ORDER_EXCHANGE = "place_order_exchange";
+
+    /**
+     * 三个服务的Queue
+     */
+    public static final String COUPON_QUEUE = "coupon_queue";
+    public static final String USER_POINTS_QUEUE = "user_points_queue";
+    public static final String BUSINESS_QUEUE = "business_queue";
+
+    @Bean
+    public Exchange placeOrderExchange(){
+        return ExchangeBuilder.fanoutExchange(PLACE_ORDER_EXCHANGE).build();
+    }
+
+    @Bean
+    public Queue couponQueue(){
+        return QueueBuilder.durable(COUPON_QUEUE).build();
+    }
+    @Bean
+    public Queue userPointsQueue(){
+        return QueueBuilder.durable(USER_POINTS_QUEUE).build();
+    }
+    @Bean
+    public Queue businessQueue(){
+        return QueueBuilder.durable(BUSINESS_QUEUE).build();
+    }
+
+    @Bean
+    public Binding couponBinding(Exchange placeOrderExchange,Queue couponQueue){
+        return BindingBuilder.bind(couponQueue).to(placeOrderExchange).with("").noargs();
+    }
+    @Bean
+    public Binding userPointsBinding(Exchange placeOrderExchange,Queue userPointsQueue){
+        return BindingBuilder.bind(userPointsQueue).to(placeOrderExchange).with("").noargs();
+    }
+    @Bean
+    public Binding businessBinding(Exchange placeOrderExchange,Queue businessQueue){
+        return BindingBuilder.bind(businessQueue).to(placeOrderExchange).with("").noargs();
+    }
+}

a-rabbitMQ/coupon/src/main/java/com/shun/coupon/listener/CouponListener.java

@@ -0,0 +1,29 @@
+package com.shun.coupon.listener;
+
+import com.rabbitmq.client.AMQP;
+import com.rabbitmq.client.Channel;
+import com.shun.coupon.config.RabbitMQConfig;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.amqp.core.Message;
+import org.springframework.amqp.rabbit.annotation.RabbitListener;
+import org.springframework.stereotype.Component;
+
+/**
+ * 优惠券消费者
+ *
+ * @author 夜灬瞬
+ * @since 2023/6/21 21:43
+ */
+@Component
+@Slf4j
+public class CouponListener {
+
+    @RabbitListener(queues = {RabbitMQConfig.COUPON_QUEUE})
+    public void consume(String msg, Channel channel, Message message) throws Exception {
+        // 预扣除优惠券
+        Thread.sleep(400);
+        log.info("优惠券预扣除成功！ msg:{}",msg);
+        // 手动ACK
+        channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
+    }
+}

a-rabbitMQ/coupon/src/main/resources/application.yml

@@ -6,4 +6,14 @@ spring:
   cloud:
     nacos:
       discovery:
-        server-addr: 127.0.0.1:8848
+        server-addr: 127.0.0.1:8848
+  rabbitmq:
+    host: 192.168.48.128
+    port: 5672
+    username: admin
+    password: admin
+    virtual-host: /
+    listener:
+      simple:
+        # 手动 ack
+        acknowledge-mode: manual