RabbitMQ .NET Client 实战实验

  由于公司业务需求,最近想上RabbitMQ,之前我研究了一段时间微软的MSMQ。开源队列有很多,各有优劣。就先拿RabbitMQ练练手吧。本篇着重代码部分,至于怎么安装,怎么配置不在赘述。而且代码是在RabbitMQ.NET Client 类库基础上实现。

  假设阅读本文的人已经安装好RabbitMQ并且做了相应的用户配置。而且项目中已经从nuget安装了rabbitmq.client.dll.我们开始做一个简单的队列发送和接收消息。

  1. 将需要配置的东西放在配置文件里,例如主机地址,端口,用户名,密码等。
  2. 实现消息发送端:Product
  3. 实现消息接收端:Customer
  4. Demo测试

 

  将以下内容作为可配置部分放在配置文件中

<appSettings>
    <!--RabbitMQ-->
    <add key="RabbitMQ_HostUri" value="amqp://192.168.1.119:5672/"/>
    <add key="RabbitMQ_HostName" value="192.168.1.119"/>
    <add key="RabbitMQ_UserName" value="test_user"/>
    <add key="RabbitMQ_Password" value="123456"/>
    <add key="RabbitMQ_VirtualHost" value="ms_mq"/>
  </appSettings>

  由于只是对RabbitMQ.Client.dll中的又一次封装,所以代码不过多解释,其中要注意的就是某些配置问题,例如是否持久化,消息处理模式是怎么样的等等。

  首先我们创建一个连接工厂:

 public ConnectionFactory CreateFactory()
        {
            if (_factory == null) {

                const ushort heartbeat = 0;
                //主机地址
                Uri uri = new Uri(RabbitMQConfig.HostUri);

                _factory = new ConnectionFactory();
                //_factory.HostName = RabbitMQConfig.HostName;
                //用户名
                _factory.UserName = RabbitMQConfig.UserName;
                //密码
                _factory.Password = RabbitMQConfig.PassWord;
                //虚拟主机名
                _factory.VirtualHost = RabbitMQConfig.VirtualHost;
                //连接终端
                _factory.Endpoint = new AmqpTcpEndpoint(uri);

                _factory.RequestedHeartbeat = heartbeat;
                //自动重连
                _factory.AutomaticRecoveryEnabled = true;
            }
            return _factory;
        }

  一个简单的消息发布:(对代码研究不够透彻,只能一切从简~~)

 public void Publish(string message, string queueName=null)
        {
            if (queueName == null) {
                queueName = _queueName;
            }

            var factory = RabbitMQFactory.Instance.CreateFactory();
            using (var connection = factory.CreateConnection())
            {
                using (var model = connection.CreateModel())
                {
                    //消息持久化,防止丢失
                    model.QueueDeclare(queueName, RabbitMQConfig.IsDurable, false, false, null);
                    var properties = model.CreateBasicProperties();
                    properties.Persistent = RabbitMQConfig.IsDurable;
                    properties.DeliveryMode = 2;

                    //消息转换为二进制
                    var msgBody = Encoding.UTF8.GetBytes(message);
                    //消息发出到队列
                    model.BasicPublish("", queueName, properties, msgBody);
                }
            }
        }

  消息接收:

 public void Consume() {
            var factory = RabbitMQFactory.Instance.CreateFactory();

            var connection = factory.CreateConnection();

            connection.ConnectionShutdown += Connection_ConnectionShutdown;

            ListenChannel = connection.CreateModel();


            bool autoDeleteMessage = false;
            var queue = ListenChannel.QueueDeclare(_queueName, RabbitMQConfig.IsDurable, false, false, null);

            //公平分发,不要同一时间给一个工作者发送多于一个消息
            ListenChannel.BasicQos(0, 1, false);
            //创建事件驱动的消费者类型,不要用下边的死循环来消费消息
            var consumer = new EventingBasicConsumer(ListenChannel);
            consumer.Received += Consumer_Received;
            //消费消息
            ListenChannel.BasicConsume(_queueName, autoDeleteMessage, consumer);
        }

  我在Customer中定义了一个 ReceiveMessageCallback Func回调,这里就是当客户端从队列接收到消息之后,怎么处理由客户端来决定

  public Func<string, bool> ReceiveMessageCallback { get; set; }

  处理消息:

 private void Consumer_Received(object sender, BasicDeliverEventArgs args) {
            try {
                var body = args.Body;
                var message = Encoding.UTF8.GetString(body);
                //将消息业务处理交给外部业务
                bool result = ReceiveMessageCallback(message);
                if (result) {
                    if (ListenChannel != null && !ListenChannel.IsClosed) {
                        ListenChannel.BasicAck(args.DeliveryTag, false);
                    }
                }
                else {

                }

            }
            catch (Exception ex) {
                throw ex;
            }
        }

  基本代码已经完成,我们写一个测试,消息发送端:

    static void Main(string[] args)
        {
            var testQueueName = "test";
            IMessageProduct product = new MessageProduct(testQueueName);
            for (int i = 0; i < 10000; i++)
            {
                Console.WriteLine("正在发送第" + i + "条消息...");
                product.Publish("消息体" + i);
            }

            Console.Read();
        }

  消息接收端:(开多个口接收)

    static void Main(string[] args)
        {

            Parallel.For(0, RabbitMQConfig.ThreadCount, i =>
            {
                IMessageCustomer customer = new MessageCustomer("test");
         //开始监听 customer.StartListening(); customer.ReceiveMessageCallback
= message => {
            //客户端处理消息(打印) Console.WriteLine(
"接收到消息:" + message); return true; }; }); Console.Read(); }

 

  打开发送消息端:

  打开消息接收端:

  到此为止,RabbitMQ队列的简单测试就完成了,没有介绍什么新知识,基本就是套DLL中的方法,不过也有很多不合理的地方,如果真正应用到项目中,还需要多加测试和修改。

  DEMO地址:https://github.com/fanpan26/RabbitMQ.NETClient

posted @ 2016-05-24 11:57  丶Pz  阅读(5560)  评论(1编辑  收藏  举报