详解rabbitmq使用springboot实现fanout模式

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xpf</groupId>
    <artifactId>rabbitmq-springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>rabbitmq-springboot</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>8</java.version>
    </properties>
    <dependencies>
        <!--rabbitmq依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-rabbit-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

server.port=8080
spring.rabbitmq.username=admin
spring.rabbitmq.password=admin
spring.rabbitmq.virtual-host=/
spring.rabbitmq.host=192.168.199.20
spring.rabbitmq.port=5672

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.FanoutExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class RabbitMqConfiguration {
    //1、声明注册fanout模式交换机 （生产者发送消息给rabbitmq，其实就是发送到交换机）
    @Bean
    public FanoutExchange fanoutExchange(){
        return new FanoutExchange("fanout_order_exchange", true, false);
    }
    //2、声明队列 sms.fanout.queue、email.fanout.queue、duanxin.fanout.queue
    @Bean
    public Queue smsQueue(){
        return new Queue("sms.fanout.queue", true);
    }
    @Bean
    public Queue emailQueue(){
        return new Queue("email.fanout.queue", true);
    }
    @Bean
    public Queue duanxinQueue(){
        return new Queue("duanxin.fanout.queue", true);
    }
    //3、完成绑定关系（队列绑定交换机）
    @Bean
    public Binding smsBinding(){
        return BindingBuilder.bind(smsQueue()).to(fanoutExchange());
    }
    @Bean
    public Binding emailBinding(){
        return BindingBuilder.bind(emailQueue()).to(fanoutExchange());
    }
    @Bean
    public Binding duanxinBinding(){
        return BindingBuilder.bind(duanxinQueue()).to(fanoutExchange());
    }
}

import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.UUID;
@Service
public class FanoutOrderService {
    @Autowired
    private RabbitTemplate rabbitTemplate;
    /**
     * 模拟用户下单，发送消息给下游系统
     * @param user
     * @param num
     */
    public void makerOrder(String user,  int num){
        //1、查询库存是否有剩余
        //2、保存订单
        String orderId = UUID.randomUUID().toString();
        System.out.println("订单生产成功：" + orderId);
        //3、通过mq给下游系统发送消息（交换机的名字千万别写错，和上述配置类应相同）
        String exchangeName = "fanout_order_exchange";
        String routingkey = "";
        rabbitTemplate.convertAndSend(exchangeName, routingkey, orderId);
        System.out.println("完成");
    }
}

import com.xpf.rabbitmqspringboot.service.DirectOrderService;
import com.xpf.rabbitmqspringboot.service.FanoutOrderService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class RabbitmqSpringbootApplicationTests {
    @Autowired
    private FanoutOrderService fanoutOrderService;
    @Autowired
    private DirectOrderService directOrderService;
    /**
     * Fanout模式生成者发送消息
     */
    @Test
    void setFanoutOrderService() {
        fanoutOrderService.makerOrder("用户1", 10);
    }
}

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
/**
 * @Author xpf
 * @Date 2023/7/9 0:44
 * @Version 1.0
 * Fanout—发布与订阅模式消费者（广播机制）
 */
@Component
@RabbitListener(queues = "sms.fanout.queue")
public class smsFanoutConsumer {
    @RabbitHandler
    public void receiveMessage(String message){
        System.out.println("接收到来自队列sms.fanout.queue消息订单的message是：" + message);
    }
}