SpringBoot整合RabbitMQ

首先是Erlang下载和环境配置以及RabbitMQ的下载

在这里我想吐槽一下Erlang的官网，为啥你这么特，下载个东西这么墨迹

百度网盘：https://pan.baidu.com/s/1f2N40EjJOK9Vvdkz3EPEsQ

提取码：5fia

相信我，百度网盘虽然垃圾，但是绝对比erlang网站强不少

环境变量

博客链接：https://blog.csdn.net/zhm3023/article/details/82217222

在这里感谢这位大佬的博客给我提供了很多帮助，（合十）

maven依赖

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

 config

package com.zdj.config;





import org.springframework.amqp.core.AmqpAdmin;
import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitMqConfig {
    @Bean
    public ConnectionFactory connectionFactory() {
        //地址
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory("127.0.0.1");
        //端口
        connectionFactory.setPort(5672);
        //default username guest
        connectionFactory.setUsername("guest");
        //default password guest
        connectionFactory.setPassword("guest");
        //  vhost can be null
        //connectionFactory.setVirtualHost("虚拟主机名");
        return connectionFactory;
    }
    //amqp 管理
    @Bean
    public AmqpAdmin amqpAdmin(){
        return new RabbitAdmin(connectionFactory());
    }
    //rabbit模板
    @Bean
    public RabbitTemplate rabbitTemplate(){
        return new RabbitTemplate(connectionFactory());
    }
    @Bean
    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(){
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setConnectionFactory(connectionFactory());
        factory.setConcurrentConsumers(3);
        factory.setMaxConcurrentConsumers(10);
        return factory;
    }
    //定义exchange
    public static final String EXCHANGE_A = "my-mq-exchange_1";
    public static final String EXCHANGE_B = "my-mq-exchange_2";
    public static final String EXCHANGE_C = "my-mq-exchange_3";
    //queue
    public static final String  QUEUE_A = "QUEUE_1";
    public static final String  QUEUE_B = "QUEUE_2";
    public static final String  QUEUE_C = "QUEUE_3";
    //routingKey
    public static final String ROUTINGKEY_A = "spring-boot-routingKey_1";
    public static final String ROUTINGKEY_B = "spring-boot-routingKey_2";
    public static final String ROUTINGKEY_C = "spring-boot-routingKey_3";
}

QueueConfig

package com.zdj.config;

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

/**
 * create three queues
 */


@Configuration
public class RabbitMqQueueConfig {

    @Bean(value = "queue1")
    public Queue queue_A(){
        return new Queue(RabbitMqConfig.QUEUE_A);
    }

    @Bean(value = "queue2")
    public Queue queue_B(){
        return new Queue(RabbitMqConfig.QUEUE_B);
    }

    @Bean(value = "queue3")
    public Queue queue_C(){
        return new Queue(RabbitMqConfig.QUEUE_C);
    }

}

 

DirectExchangeConfig

package com.zdj.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author fqg
 * @csdn
 * @date 2020/6/17
 *
 * directExchange 直连交换机
 */

@Configuration
public class DirectExchangeConfig {
    //create directExchange
    @Bean(value = "exchange_A")
    public DirectExchange directExchange(){
        DirectExchange directExchange = new DirectExchange(RabbitMqConfig.EXCHANGE_A);
        return directExchange;
    }
    //connect exchange_A with queue_A
    @Bean(value = "exchange_AtoQueue_A")
    public Binding exchange_AtoQueue_A(@Qualifier("queue1") Queue queue){
        return BindingBuilder.bind(queue).to(directExchange()).with(RabbitMqConfig.ROUTINGKEY_A);
    }
    //connect exchange_A with queue_B
    @Bean(value = "exchange_AtoQueue_B")
    public Binding exchange_AtoQueue_B(@Qualifier("queue2") Queue queue){
        return BindingBuilder.bind(queue).to(directExchange()).with(RabbitMqConfig.ROUTINGKEY_B);
    }
}

FanoutExchangeConfig

package com.zdj.config;

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

@Configuration
public class FanoutExchangeConfig {
    @Bean(value = "exchange2")
    public FanoutExchange fanoutExchange(){
        FanoutExchange fanoutExchange = new FanoutExchange("exchange2");
        return fanoutExchange;
    }

    @Bean(value = "exchange2toQueue3")
    public Binding exchange2toQueue3(@Qualifier("queue3") Queue queue){
        return BindingBuilder.bind(queue).to(fanoutExchange());
    }
}

Producer

package com.zdj.producer;

import com.zdj.config.RabbitMqConfig;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.UUID;

@Component
public class MsgProducer implements RabbitTemplate.ConfirmCallback {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void sendMsg(String content){
        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
        //put content to queue according to the routingKey_A
        rabbitTemplate.convertAndSend(RabbitMqConfig.EXCHANGE_A, RabbitMqConfig.ROUTINGKEY_A, content, correlationId);
    }

    /**
     * callback
     * @param correlationData
     * @param b
     * @param s
     */
    @Override
    public void confirm(CorrelationData correlationData, boolean b, String s) {
        System.out.println("callbackId" + correlationData);
        if(b){
            System.out.println("success consume");
        }else{
            System.out.println("fail consume");
        }
    }
}

Listener

package com.zdj.listener;

import com.zdj.config.RabbitMqConfig;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;


@Component
@RabbitListener(queues = RabbitMqConfig.QUEUE_A)
public class Queue1Listener1 {

    @RabbitHandler
    public void process(String content){
        System.out.println("cpu1监听queue1：" + content);
    }
}

package com.zdj.listener;

import com.zdj.config.RabbitMqConfig;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Component
@RabbitListener(queues = RabbitMqConfig.QUEUE_A)
public class Queue1Listener2 {

    @RabbitHandler
    public void process(String content){
        System.out.println("cpu2监听queue1" + content);
    }
}

Test

package com.zdj.test;

import com.zdj.TestZdjMainApplication;
import com.zdj.producer.MsgProducer;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;


@RunWith(SpringRunner.class)
@SpringBootTest(classes = TestZdjMainApplication.class)
public class Test{
    @Autowired
    private MsgProducer msgProducer;
    @Test
    public void set(){
        for(int i = 0; i < 10;  i++){
            msgProducer.sendMsg("第" + i + "条");
        }
    }
}

问题：

1.RabbitMQ的几种Exchange消息调度策略

fanout，direct，Topic（*代表一个单词，#代表多个单词），headers（键值对）

2.使用情况

我最开始是想在前端和controller中间添加MQ，用作削峰和增加并发量，但是我想到的MQ不能实现实时的返回一些东西，所以没有实现转而实现了日志系统，定义了两个监听器监听队列，当打印出日志的时候只进行入队列操作，存储日志交给监听器来做。