rpm -ivh erlang-21.3-1.el7.x86_64.rpm 
yum install socat -y
rpm -ivh rabbitmq-server-3.8.8-1.el7.noarch.rpm
systemctl start rabbitmq-server
systemctl status rabbitmq-server
systemctl stop rabbitmq-server
rabbitmq-plugins enable rabbitmq_management
systemctl start rabbitmq-server

# 添加一个新的用户创建账号
[root@rabbitmq opt]# rabbitmqctl add_user admin 123
Adding user "admin" ...
# 设置用户角色 
[root@rabbitmq opt]# rabbitmqctl set_user_tags admin administrator
Setting tags for user "admin" to [administrator] ...
# 用户 user_admin 具有/vhost1 这个 virtual host 中所有资源的配置、写、读权限当前用户和角色
[root@rabbitmq opt]# rabbitmqctl set_permissions -p "/" admin ".*" ".*" ".*"
Setting permissions for user "admin" in vhost "/" ...
# 当前用户和角色
[root@rabbitmq opt]# rabbitmqctl list_users
Listing users ...
user  tags
admin [administrator]
guest [administrator]

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.example</groupId>
    <artifactId>rabbitmq-test</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <!--rabbitmq 依赖客户端-->
        <dependency>
            <groupId>com.rabbitmq</groupId>
            <artifactId>amqp-client</artifactId>
            <version>5.8.0</version>
        </dependency>
        <!--操作文件流的一个依赖-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.6</version>
        </dependency>
    </dependencies>
</project>

package com.caq.rabbitmq.one;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeoutException;
/**
 * 生产者：发消息
 */
public class Producer {
    //队列名称
    public static final String QUEUE_NAME = "hello";
    //发消息
    public static void main(String[] args) throws IOException, TimeoutException {
//        创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
//        工厂ip，连接rabbitmq的队列
        factory.setHost("192.168.42.96");
        factory.setUsername("admin");
        factory.setPassword("123");
//        创建连接
        Connection connection = factory.newConnection();
//        获取信道
        Channel channel = connection.createChannel();
        /**
         * 生成一个队列
         * 1.队列名称
         * 2.队列里面的消息是否持久化 默认情况消息存储在内存中true持久化，false不持久化
         * 3.该队列是否只供一个消费者进行消费 是否进行消息共享，true可以多个消费者消费，false只能一个消费者消费
         * 4.是否自动删除，最后一个消费者断开连接以后，该队列是否自动删除 true自动 false不自动
         * 5.其他参数
         *
         */
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        //发消息
        String message = "hello world";
        /**
         * 发送一个消费
         * 1.发送到那个交换机
         * 2.路由的key值是那个  本次是队列的名称
         * 3.其他参数信息
         * 4.发送的消息体
         */
        channel.basicPublish("",QUEUE_NAME,null,message.getBytes());
        System.out.println("消息发送完毕");
    }
}

@FunctionalInterface
public interface DeliverCallback {
    /**
     * Called when a <code><b>basic.deliver</b></code> is received for this consumer.
     * @param consumerTag the <i>consumer tag</i> associated with the consumer
     * @param message the delivered message
     * @throws IOException if the consumer encounters an I/O error while processing the message
     */
    void handle(String consumerTag, Delivery message) throws IOException;
}

package com.caq.rabbitmq.one;
import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
/**
 * 消费者 接受消息的
 */
public class Consumer {
    //    队列的名称
    public static final String QUEUE_NAME = "hello";
    //发消息
    public static void main(String[] args) throws IOException, TimeoutException {
//        创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
//        工厂ip，连接rabbitmq的队列
        factory.setHost("192.168.42.96");
        factory.setUsername("admin");
        factory.setPassword("123");
//        创建连接
        Connection connection = factory.newConnection();
//        获取信道
        Channel channel = connection.createChannel();
        //声明
        DeliverCallback deliverCallback = (consumerTag, message) -> {
            System.out.println(new String(message.getBody()));
        };
        //取消消息时的回调
        CancelCallback cancelCallback = consumerTag -> {
            System.out.println("消息消费被中断");
        };
        /**
         * 消费者消费消息
         * 1.消费那个队列
         * 2.消费成功后是否要自动应答 true代表自动应答 false代表手动
         * 3.消费者为成功消费的回调
         * 4.消费者取消消费的回调
         */
        channel.basicConsume(QUEUE_NAME,true,deliverCallback,cancelCallback);
    }
}