rabbitmq用法

首先nuget上下载rabbitmq

版本要5.1.2

然后要自己搞一台服务器，上面要部署mq的服务端(具体教程网上很多)

接下来就是代码了，目前例两种模式，以后再有用到再说，

需要注意一下，不能同时定义多个队列名一样的接收端，这样会造成：定义了多少个同样的队列名，就要发定义同样队列名接收端个数次消息才能让它们全收到，什么意思？

比如说你定义了两个队列名都叫q1的接收端，这时候我们往q1发送消息的时候会发现只有一个接收端会收到消息，再发一次的时候另一个接收端才会收到消息，这样的情况两个模式都会这样。

1.队列模式

发送端：

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

class Program
{
    //发送
    static void Main(string[] args)
    {
        String exchangeName = "自己定一个频道名";
        ConnectionFactory factory = new ConnectionFactory() { AutomaticRecoveryEnabled = true };
        factory.HostName = "你部署的mq的ip";
        factory.UserName = "账号";
        factory.Password = "密码";

        IConnection connection = factory.CreateConnection();//连接服务器，即正在创建终结点。
        IModel channel = connection.CreateModel();
        channel.QueueDeclare(exchangeName, true, false, false, null);//创建一个名称为kibaqueue的消息队列
        IBasicProperties properties = channel.CreateBasicProperties();
        properties.DeliveryMode = 1;
        channel.BasicPublish("", exchangeName, properties, Encoding.UTF8.GetBytes("啊啊啊")); //生产消息
        channel.Dispose();
        connection.Dispose();
    }
}

接收端：

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


class Program
{
    //接收
    static void Main(string[] args)
    {
        ConnectionFactory factory = new ConnectionFactory() { AutomaticRecoveryEnabled = true };
        factory.HostName = "你部署的mq的ip";
        factory.UserName = "账号";
        factory.Password = "密码";
        IConnection connection = factory.CreateConnection();
        // 创建通道
        IModel channel = connection.CreateModel();
        channel.QueueDeclare("你定义的频道名", true, false, false, null);
        EventingBasicConsumer consumer = new EventingBasicConsumer(channel);//消费者
        consumer.Received += ReceivedEvent;
        channel.BasicConsume("你定义的频道名", true, consumer);//消费消息

        Console.ReadKey();
    }



    public static void ReceivedEvent(object model, BasicDeliverEventArgs ea)
    {
        try
        {
            var body = ea.Body;
            string message = Encoding.UTF8.GetString(body);
            Console.WriteLine("接受到了：" + message);
        }
        catch (Exception ex)
        {
        }
    }
}

打开发送控制台和接收控制台测试一下：

 2.广播模式

广播模式就是在定义了某个交换机下的所有队列名都会收到消息，比如说我注册了名字叫做"qqq"的交换机，下面队列名有"q1"、"q2"，那么q1和q2都会收到消息

发送端

using RabbitMQ.Client;
using System.Text;


class Program
{
    //发送端
    static void Main(string[] args)
    {
        string exchangeName = "交换机名字";
        string routeKey = "";

        //创建连接工厂
        ConnectionFactory factory = new ConnectionFactory
        {
            UserName = "用户名",//用户名
            Password = "密码",//密码
            HostName = "你部署的mq服务器"
        };

        //创建连接
        IConnection connection = factory.CreateConnection();
        //创建通道
        IModel channel = connection.CreateModel();string msg = "啊啊啊啊";
        channel.BasicPublish(exchangeName, routeKey, null, Encoding.UTF8.GetBytes(msg));
        channel.Close();
        connection.Close();
    }
}

接收端

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

class Program
{
    //接收
    static void Main(string[] args)
    {
        string queueName = "队列名";
        string exchangeName = "交换机名";
        string rotkingKey = string.Empty;
        //创建连接工厂
        ConnectionFactory factory = new ConnectionFactory
        {
            UserName = "用户名",//用户名
            Password = "密码",//密码
            HostName = "你部署的mq服务器ip"
        };

        //创建连接
        IConnection connection = factory.CreateConnection();
        //创建通道
        IModel channel = connection.CreateModel();
　　　　　
　　　　　channel.ExchangeDeclare(exchangeName, ExchangeType.Fanout, true, false, null);
        //队列声明
        channel.QueueDeclare(queueName, false, false, false, null);
        //绑定交换机，绑定完成以后就可以收到消息了
        channel.QueueBind(queueName, exchangeName, rotkingKey, null);
        //channel.QueueUnbind(queueName, exchangeName, rotkingKey, null);取消绑定队列名
        //事件基本消费者
        EventingBasicConsumer consumer = new EventingBasicConsumer(channel);

        //接收到消息事件
        consumer.Received += (ch, ea) =>
        {
            var message = Encoding.UTF8.GetString(ea.Body);

            Console.WriteLine($"Queue:{queueName}收到消息： {message}");
                //确认该消息已被消费
                channel.BasicAck(ea.DeliveryTag, true);
        };
        //启动消费者 设置为手动应答消息
        channel.BasicConsume(queueName, false, consumer);
    }
}