1-8 (1). SpringBoot整合RabbitMQ-消息生产者

SpringBoot整合RabbitMQ-消息生产者
主要流程是：
1.创建Springboot工程
2.依赖引入
3.编写yml配置
4.编写配置类，并定义交换机，队列等信息
5.注入RabbitTemplate，完成消息的发送

    org.springframework.boot
    spring-boot-starter-parent
    2.3.12.RELEASE
     


	
			org.springframework.boot
			spring-boot-starter
		
    
        org.springframework.boot
        spring-boot-starter-amqp
    
    
        org.springframework.boot
        spring-boot-starter-test
    

# 配置RabbitMQ的基本信息
spring:
  rabbitmq:
    host: 127.0.0.1
    port: 5672
    username: guest
    password: guest
    virtual-host: /

RabbitMQ有几种模式，包括简单模式，工作模式和订阅模式，具体查看官网
https://rabbitmq.com/getstarted.html

这里采用的订阅模式中的Topic，配置类信息如下：

package cn.sysu.config;

import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitMQComfig {

    public static final String EXCHANGE_NAME = "ming-topic-exchange";
    public static final String QUEUE_NAME1 = "ming-queue1";
    public static final String QUEUE_NAME2 = "ming-queue2";

    //1.创建交换机
    @Bean("topic-exchange")
    public Exchange createExchange(){
        return ExchangeBuilder.topicExchange(EXCHANGE_NAME).durable(true).build();
    }

    //2.创建交队列
    @Bean("queue1")
    public Queue createQueue1(){
        return QueueBuilder.durable(QUEUE_NAME1).build();
    }
    @Bean("queue2")
    public Queue createQueue2(){
        return QueueBuilder.durable(QUEUE_NAME2).build();
    }

    //3.队列与交换机的关系 Binding
    @Bean
    public Binding bindQueueAndExchange1(@Qualifier("queue1") Queue queue,@Qualifier("topic-exchange") Exchange exchange){
        return BindingBuilder.bind(queue).to(exchange).with("test1.#").noargs();
    }

    @Bean
    public Binding bindQueueAndExchange2(@Qualifier("queue2") Queue queue,@Qualifier("topic-exchange") Exchange exchange){
        return BindingBuilder.bind(queue).to(exchange).with("test2.#").noargs();
    }

}

测试类编写如下：

package cn.sysu;

import cn.sysu.config.RabbitMQComfig;
import org.junit.jupiter.api.Test;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class ProducerApplicationTest {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @Test
    void contextLoads() {
        rabbitTemplate.convertAndSend(RabbitMQComfig.EXCHANGE_NAME,"test1.hello","test-message1");
        rabbitTemplate.convertAndSend(RabbitMQComfig.EXCHANGE_NAME,"test2.word","test-message2");
    }

}

测试，显示消息发送成功

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