一、安装Erlang与Rabbitmq

安装教程本教程是在centos8下试验的，其实linux系统的都差不多RabbitMQ官方：Messaging that just works — RabbitMQRabbitMQ是开源AMQP实现，服务器端用Erlang语言编写，Python、Ruby、 NET、Java、JMS、c、PHP、action screcrive AMQP (高级消息队列协议)和高级消息队列协议是APP应用层协议的开放标准，是为面向消息的中间件而设计的。消息中间件主要用于组件之间的解耦，其中消息的发送方不需要知道消息使用者的存在，反之_rabbitmq安装https://blog.csdn.net/weixin_44545251/article/details/128216395

二、在springboot中使用rabbitmq

1.导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

2.编写配置文件

spring：
 rabbitmq:
   host: localhost
   port: 5672
   username: guest
   password: guest

3.配置一个队列

package com.example.Rabbtimq.config;

import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class QueueAndExchangeConfig {
    @Bean("myFirstQueue")
    public Queue getFirstQueue(){
        return new Queue("my-first-queue");
    }
}

4.编写一个生产者类

package com.example.Rabbtimq.controller;

import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
@RequestMapping("producer")
public class RabbitMqController {
    @Autowired
    private RabbitTemplate rabbitTemplate;

    @GetMapping("producerSendFirstQueue")
    public String sendMsg(String msg){
        rabbitTemplate.convertAndSend("my-first-queue",msg);
        return msg;
    }

}

5.编写一个消费者监听队列中的消息

package com.example.Rabbtimq.controller;

import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@Component
public class ConsumerHandler {
    @RabbitListener(queues = "my-first-queue")
    public void getFirstQueue(String msg){
        System.out.println("消费者1："+msg);
    }
}