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c# rabbitmq 簡單收發(fā)消息的示例代碼

 更新時(shí)間:2020年08月19日 09:49:30   作者:潘達(dá)小新  
這篇文章主要介紹了c# rabbitmq 簡單收發(fā)消息的示例代碼,文中通過示例代碼介紹的非常詳細(xì),對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

發(fā)布消息:(生產(chǎn)者)

   /// <summary>
    /// 發(fā)送消息
    /// </summary>
    /// <param name="queue">隊(duì)列名</param>
    /// <param name="message">消息內(nèi)容</param>
    private static void PublishInfo(string queue, string message)
    {
      try
      {
        var factory = new ConnectionFactory();
        factory.HostName = "localhost";//RabbitMQ服務(wù)在本地運(yùn)行
        factory.UserName = "guest";//用戶名
        factory.Password = "guest";//密碼

        using (var connection = factory.CreateConnection())
        {
          using (var channel = connection.CreateModel())
          {
            bool durable = true;//將消息標(biāo)記為持久性
            channel.QueueDeclare(queue, durable, false, false, null);

            IBasicProperties properties = channel.CreateBasicProperties();
            properties.DeliveryMode = 2;

            var body = Encoding.UTF8.GetBytes(message);
            channel.BasicPublish("", queue, properties, body); //開始傳遞

          }
        }
      }
      catch (System.Exception ex)
      {
        Console.WriteLine(ex.ToString());
      }
      Console.ReadLine();
    }

使用:

PublishInfo("test", "222222222222");

 點(diǎn)擊test進(jìn)入隊(duì)列內(nèi)部:

消費(fèi)消息:

方法一:舊版可用

 private static void ConsumeInfo(string queue)
    {
      try
      {
        var factory = new ConnectionFactory();
        factory.HostName = "localhost";//RabbitMQ服務(wù)在本地運(yùn)行
        factory.UserName = "guest";//用戶名
        factory.Password = "guest";//密碼

        using (var connection = factory.CreateConnection())
        {
          using (var channel = connection.CreateModel())
          {
            //bool durable = true;//將消息標(biāo)記為持久性
            //channel.QueueDeclare("sljcgx:finish-queue", durable, false, false, null);//聲明隊(duì)列,隊(duì)列不存在則創(chuàng)建該隊(duì)列

            //設(shè)置prefetchCount : 1來告知RabbitMQ,在未收到消費(fèi)端的消息確認(rèn)時(shí),不再分發(fā)消息,也就確保了當(dāng)消費(fèi)端處于忙碌狀態(tài)時(shí),不再分配任務(wù)。
            channel.BasicQos(prefetchSize: 0, prefetchCount: 1, global: false);
            var consumer = new QueueingBasicConsumer(channel);
           
            //false為手動(dòng)確認(rèn),獲取消息后需要添加 channel.BasicAck(ea.DeliveryTag, false)確認(rèn)
            //true則為自動(dòng)確認(rèn),不需要這行代碼
            channel.BasicConsume(queue, false, consumer);

            while (true)
            {
              try
              {
                var ea = (BasicDeliverEventArgs)consumer.Queue.Dequeue();//阻塞函數(shù),獲取隊(duì)列中的消息
                var bodyReceive = ea.Body;
                string message = Encoding.UTF8.GetString(bodyReceive);
                Console.WriteLine(message);
                channel.BasicAck(ea.DeliveryTag, false);// 消息確認(rèn)信號,確認(rèn)后該消息將從隊(duì)列里移除
              }
              catch (System.Exception ex)
              {
                
                Console.WriteLine(ex.Message);
              }
            }
          }

        }
      }
      catch (System.Exception ex)
      {
        Console.WriteLine(ex.ToString());
      }
      Console.ReadLine();
    }

方法二:(通用)

   private static void ConsumeInfo2(string queue)
    {
      try
      {
        var factory = new ConnectionFactory();
        factory.HostName = "localhost";//RabbitMQ服務(wù)在本地運(yùn)行
        factory.UserName = "guest";//用戶名
        factory.Password = "guest";//密碼
        var connection = factory.CreateConnection();
        var channel = connection.CreateModel();
        channel.QueueDeclare(queue, true, false, false, null);//聲明隊(duì)列,隊(duì)列不存在則創(chuàng)建該隊(duì)列
        channel.BasicQos(0, 1, false);//公平分發(fā)、同一時(shí)間只處理一個(gè)消息。

        var consumer = new EventingBasicConsumer(channel); //消費(fèi)者(指定消息通道)該事件在接收到消息時(shí)觸發(fā)
        consumer.Received += (sender, e) =>
        {
          byte[] body = e.Body.ToArray();  //消息字節(jié)數(shù)組
          string message = Encoding.UTF8.GetString(body); //消息內(nèi)容

          Console.WriteLine(message);
          channel.BasicAck(e.DeliveryTag, false);    //手工確認(rèn)

        };
        channel.BasicConsume(queue, false, consumer);  //消費(fèi)消息(在當(dāng)前通道中監(jiān)聽 queue 隊(duì)列,并進(jìn)行消費(fèi))
        Console.ReadLine();
        connection.Close();
        channel.Close();
      }
      catch (System.Exception ex)
      {
        Console.WriteLine(ex.ToString());
      }
    }

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