rabbitmq系列——（2 多生产多消费）

 订单多任务处理

 能够让生产者的横向扩展，支持多个服务器；  生产者集群架构，消费端集群架构；

 同一个队列的话，消息是被瓜分掉的

　 设置均衡消费端：

　　channel.BasicQos(0, 1, false);

　　//预取数量设置为1个; 设置false

　　

nuget ：

1. 生产者

using RabbitMQMsgProducer.MessageProducer;
using Microsoft.Extensions.Configuration;
using System;
using System.IO;

namespace RabbitMQMsgProducer
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                {
                    //多生产者多消费者
                    //订单任务处理
                    IConfigurationRoot config = new ConfigurationBuilder()
                     .SetBasePath(Directory.GetCurrentDirectory())
                     .AddCommandLine(args)//支持命令行参数
                     .Build();

                    string strMinute = config["minute"];  //什么时候开始执行
                    string Num = config["num"]; //生产者编号 
                    int minute = Convert.ToInt32(strMinute);
                    bool flg = true;
                    while (flg)
                    {
                        if (DateTime.Now.Minute == minute)
                        {
                            Console.WriteLine($"到{strMinute}分钟，开始写入消息。。。");
                            flg = false;
                            MultiProducerMsg.Send(Num);
                        }
                    }
                }
                Console.ReadLine();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
}

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

namespace RabbitMQMsgProducer.MessageProducer
{
    public class MultiProducerMsg
    {
        public static void Send(string Num)
        {
            ConnectionFactory connectionFactory = new ConnectionFactory();
            connectionFactory.HostName = "localhost";
            connectionFactory.UserName = "guest";
            connectionFactory.Password = "guest";
            string exchangeName = "MultiProducerMsgExchange";
            string queueName = "MultiProducerMsgQueue";
            using (IConnection connection = connectionFactory.CreateConnection())
            {
                using (IModel channel = connection.CreateModel())
                {
                    // 声明 exchange 类型为 Direct，durable 持久化为true
                    channel.ExchangeDeclare(exchange: exchangeName, type: ExchangeType.Direct, durable: true, autoDelete: false, arguments: null);
                    // 声明 queue
                    channel.QueueDeclare(queue: queueName, durable: true, exclusive: false, autoDelete: false, arguments: null);
                    // 绑定
                    channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: string.Empty, arguments: null);
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine($"the producer {Num} is ready.");
                    while (true)
                    {
                        string msg = $"producer{Num} : message {DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss fff")} .";
                        byte[] body = Encoding.UTF8.GetBytes(msg);
                        // 发送消息
                        channel.BasicPublish(exchange: exchangeName, routingKey: string.Empty, basicProperties: null, body: body);
                        Console.WriteLine($"the message : {msg} is send .");
                        Thread.Sleep(200);
                    }
                }
            }
        }
    }
}

2. 消费者

using RabbitMQMsgConsumer001.MessageConsumer;
using System;
using System.Threading.Tasks;

namespace RabbitMQMsgConsumer001
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                {
                    // 多生产多消费
                    // 规模处理任务清单操作
                    Task.Run(() => { MultiConsumerMsg.Receive001(); });
                    Task.Run(() => { MultiConsumerMsg.Receive002(); });
                    Task.Run(() => { MultiConsumerMsg.Receive003(); });
                }
                Console.ReadLine();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
}

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

namespace RabbitMQMsgConsumer001.MessageConsumer
{
    public class MultiConsumerMsg
    {
        public static void Receive001()
        {
            var factory = new ConnectionFactory();
            factory.HostName = "localhost";
            factory.UserName = "guest";
            factory.Password = "guest";
            string queueName = "MultiProducerMsgQueue";
            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    try
                    {
                        var consumer = new EventingBasicConsumer(channel);
                        consumer.Received += (model, ea) =>
                        {
                            var body = ea.Body;
                            var message = Encoding.UTF8.GetString(body.ToArray());
                            Console.WriteLine($"the consumer 001 received: {message}");
                        };
                        channel.BasicConsume(queue: queueName,
                                     autoAck: true,
                                     consumer: consumer);
                        Console.WriteLine(" Press [enter] to exit.");
                        Console.ReadLine();
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                }
            }
        }

        public static void Receive002()
        {
            var factory = new ConnectionFactory();
            factory.HostName = "localhost";
            factory.UserName = "guest";
            factory.Password = "guest";
            string queueName = "MultiProducerMsgQueue";
            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    try
                    {
                        var consumer = new EventingBasicConsumer(channel);
                        consumer.Received += (model, ea) =>
                        {
                            var body = ea.Body;
                            var message = Encoding.UTF8.GetString(body.ToArray());
                            Console.WriteLine($"the consumer 002 received: {message}");
                        };
                        channel.BasicConsume(queue: queueName,
                                     autoAck: true,
                                     consumer: consumer);
                        Console.WriteLine(" Press [enter] to exit.");
                        Console.ReadLine();
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                }
            }
        }

        public static void Receive003()
        {
            var factory = new ConnectionFactory();
            factory.HostName = "localhost";
            factory.UserName = "guest";
            factory.Password = "guest";
            string queueName = "MultiProducerMsgQueue";
            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    try
                    {
                        var consumer = new EventingBasicConsumer(channel);
                        consumer.Received += (model, ea) =>
                        {
                            var body = ea.Body;
                            var message = Encoding.UTF8.GetString(body.ToArray());
                            Console.WriteLine($"the consumer 003 received: {message}");
                        };
                        channel.BasicConsume(queue: queueName,
                                     autoAck: true,
                                     consumer: consumer);
                        Console.WriteLine(" Press [enter] to exit.");
                        Console.ReadLine();
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                }
            }
        }
    }
}

3. 运行效果

dotnet RabbitMQMsgProducer.dll num=001 minute=22

dotnet RabbitMQMsgConsumer001.dll