4.生产者 消费者模式的RabbitMQ

1.生产者:

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

namespace Publisher1
{
    class Program
    {
        static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "127.0.0.1",
                UserName = "mytest",
                Password = "mytest"
            };
            //第一步：创建connection
            var connection = factory.CreateConnection();
            //第二步：创建channel
            var channel = connection.CreateModel();
            //第三步：申明交换机

            //第四步：声明一个队列
            channel.QueueDeclare("manQueue", true, false, false, null);
            //循环往队列中插入100条数据
            for (int i = 1; i <= 100; i++)
            {
                var msg = Encoding.UTF8.GetBytes($"{i}:希望！");
                //第五步：发布消息
                channel.BasicPublish(string.Empty, routingKey: "manQueue", basicProperties: null, body: msg);
            }

            Console.WriteLine("完成");
        }
    }
}

2.消费者

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

namespace Consumer1
{
    class Program
    {
        static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "127.0.0.1",
                UserName = "mytest",
                Password = "mytest"
            };
            //第一步：创建connection
            var connection = factory.CreateConnection();
            //第二步：创建channel
            var channel = connection.CreateModel();
            //第三步：申明交换机
            channel.QueueDeclare("manQueue", true, false, false, null);

            //第四步：获取消息
            //BasicGet是主动获取 这里要使用发布订阅模式
            //var result = channel.BasicGet("manQueue", true);
            //var msg = Encoding.UTF8.GetString(result.Body);
            EventingBasicConsumer consumer = new EventingBasicConsumer(channel);
            consumer.Received += (sender,e)=> {
                var msg = Encoding.UTF8.GetString(e.Body);
                Console.WriteLine(msg);
            };
            //第五步 要指出 去订阅哪个队列 用哪个消费者
            channel.BasicConsume("manQueue", true, consumer);
            Console.ReadKey();
        }
    }
}

3.如果要使用自定义的交换机 不用默认的交换机

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

namespace Publisher1
{
    class Program
    {
        static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "127.0.0.1",
                UserName = "mytest",
                Password = "mytest"
            };
            //第一步：创建connection
            var connection = factory.CreateConnection();
            //第二步：创建channel
            var channel = connection.CreateModel();
            //第三步：申明交换机
            channel.ExchangeDeclare("MyExchange",ExchangeType.Direct,true,false,null);
            //由于不是默认的交换机 所以还要跟队列做一个绑定
            channel.QueueBind("manQueue", "MyExchange", "manQueue", null);

            //第四步：声明一个队列
            channel.QueueDeclare("manQueue", true, false, false, null);
            //循环往队列中插入100条数据
            for (int i = 1; i <= 100; i++)
            {
                var msg = Encoding.UTF8.GetBytes($"{i}:希望！");
                //第五步：发布消息
                //这时候要使用指定的交换机
                //channel.BasicPublish(string.Empty, routingKey: "manQueue", basicProperties: null, body: msg);
                channel.BasicPublish("MyExchange", routingKey: "manQueue", basicProperties: null, body: msg);
            }

            Console.WriteLine("完成");
        }
    }
}