Centos7 安装rabbitMQ

首先需要安装erlang，根据rabbitMQ的版本不同安装的erlang版本也不一样：

erlang与rabbitMQ版本关系

我的系统是centos7 、Erlang 20.x rabbitMQ 3.6.11.

第一步添加yum源

# vi /etc/yum.repos.d/rabbitmq-erlang.repo

添加如下内容：
[rabbitmq-erlang]
name=rabbitmq-erlang
baseurl=https://dl.bintray.com/rabbitmq/rpm/erlang/20/el/7
gpgcheck=1
gpgkey=https://dl.bintray.com/rabbitmq/Keys/rabbitmq-release-signing-key.asc
repo_gpgcheck=0
enabled=1

第二步安装Erlang

#yum celan all

# yum install erlang

检查erlang是否安装好

#erl -version

显示如下内容说明安装成功

Erlang (SMP,ASYNC_THREADS,HIPE) (BEAM) emulator version 9.3.3.2

第三步安装 socat

#yum -y install socat

第四步下载并安装rabbitMQ

# wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.6/rabbitmq-server-3.6.6-1.el7.noarch.rpm

#rpm -vih rabbitmq-server-3.6.6-1.el7.noarch.rpm 

第五步启动

#systemctl start rabbitmq-server.service 

可以查看服务状态：

#systemctl status rabbitmq-server.service 

开放5672端口：

#firewall-cmd --zone=public --add-port=5672/tcp --permanent
#firewall-cmd --reload 

或者直接关闭防火墙

#systemctl stop firewalld.service 

 

第六步 开启管理UI：

#rabbitmq-plugins enable rabbitmq_management
#firewall-cmd --zone=public --add-port=15672/tcp --permanent
#firewall-cmd --reload

在浏览器下打开地址：

http://192.168.0.119:15672/

rabbitmq默认创建的用户guest，密码也是guest，这个用户默认只能是本机访问，localhost或者127.0.0.1，从外部访问需要添加配置。

cd /etc/rabbitmq/
vi rabbitmq.config

编辑内容如下：

[{rabbit, [{loopback_users, []}]}].

这里的意思是开放使用，rabbitmq默认创建的用户guest，密码也是guest，这个用户默认只能是本机访问，localhost或者127.0.0.1，从外部访问需要添加上面的配置。

保存配置后重启服务

 

SpringBoot+RabbitMq的使用

在Windows上进行测试：

新建.net core控制台项目，引用RabbitMQ.Client包：

Install-Package RabbitMQ.Client

测试代码：

public static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory();
            factory.UserName = "guest";
            factory.Password = "guest";
            factory.VirtualHost = "/";
            factory.HostName = "localhost";
            //factory.HostName = "192.168.0.119";
            try
            {
                IConnection conn = factory.CreateConnection();
                IModel model = conn.CreateModel();
                string exchangeName = "test";
                string queueName = "testq";
                string routingKey = "first";

                model.ExchangeDeclare(exchangeName, ExchangeType.Direct);
                model.QueueDeclare(queueName, false, false, false, null);
                model.QueueBind(queueName, exchangeName, routingKey, null);
                byte[] messageBodyBytes = System.Text.Encoding.UTF8.GetBytes("Hello, world!");
                model.BasicPublish(exchangeName, routingKey, null, messageBodyBytes);
                Console.WriteLine("message sended.");

                bool noAck = false;
                BasicGetResult result = model.BasicGet(queueName, noAck);
                if (result == null)
                {
                    Console.Write("no message.");
                }
                else
                {
                    IBasicProperties props = result.BasicProperties;
                    byte[] body = result.Body;
                    model.BasicAck(result.DeliveryTag, false);
                    string message = System.Text.Encoding.UTF8.GetString(body);
                    Console.Write(message);
                }
            }
            catch (Exception ex)
            {
                Console.Write(ex.Message);
            }
        }

 也可以使用官网的例子（这里更清晰）：

http://www.rabbitmq.com/tutorials/tutorial-one-dotnet.html

发送端：

using System;
using RabbitMQ.Client;
using System.Text;

class Send
{
    public static void Main()
    {
        var factory = new ConnectionFactory() { HostName = "localhost" };
        using(var connection = factory.CreateConnection())
        using(var channel = connection.CreateModel())
        {
            channel.QueueDeclare(queue: "hello",
                                 durable: false,
                                 exclusive: false,
                                 autoDelete: false,
                                 arguments: null);

            string message = "Hello World!";
            var body = Encoding.UTF8.GetBytes(message);

            channel.BasicPublish(exchange: "",
                                 routingKey: "hello",
                                 basicProperties: null,
                                 body: body);
            Console.WriteLine(" [x] Sent {0}", message);
        }

        Console.WriteLine(" Press [enter] to exit.");
        Console.ReadLine();
    }
}

 

接收端：

using RabbitMQ.Client;
using RabbitMQ.Client.Events;
using System;
using System.Text;

class Receive
{
    public static void Main()
    {
        var factory = new ConnectionFactory() { HostName = "localhost" };
        using(var connection = factory.CreateConnection())
        using(var channel = connection.CreateModel())
        {
            channel.QueueDeclare(queue: "hello",
                                 durable: false,
                                 exclusive: false,
                                 autoDelete: false,
                                 arguments: null);

            var consumer = new EventingBasicConsumer(channel);
            consumer.Received += (model, ea) =>
            {
                var body = ea.Body;
                var message = Encoding.UTF8.GetString(body);
                Console.WriteLine(" [x] Received {0}", message);
            };
            channel.BasicConsume(queue: "hello",
                                 noAck: true,
                                 consumer: consumer);

            Console.WriteLine(" Press [enter] to exit.");
            Console.ReadLine();
        }
    }
}

在Windows上发送，在CentOS上接收，效果如图：