C#用RabbitMQ实现消息订阅与发布

/// <summary>
    /// fanout类型交换机，发送消息
    /// </summary>
    public class RabbitMqFanoutSendHelper : RabbitMqHelper {
        /// <summary>
        /// 发送消息
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool SendMsg(string msg)
        {
            try
            {
                using (var conn = GetConnection("/Alan.hsiang"))
                {
                    using (var channel = conn.CreateModel())
                    {
                        channel.ExchangeDeclare(exchange: "amq.fanout", type: ExchangeType.Fanout,durable:true);

                        var body = Encoding.UTF8.GetBytes(msg);

                        channel.BasicPublish(exchange: "amq.fanout",
                                             routingKey: "",
                                             basicProperties: null,
                                             body: body);

                        //Console.WriteLine(" [x] Sent {0}", message);
                    };
                };
                return true;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }

/// <summary>
    /// 扇形交换机接收消息
    /// </summary>
    public class RabbitMqFanoutReceiveHelper : RabbitMqHelper
    {
        public RabbitMqReceiveEventHandler OnReceiveEvent;

        private IConnection conn;

        private IModel channel;

        private EventingBasicConsumer consumer;

        public bool StartReceiveMsg(string queueName)
        {
            try
            {
                conn = GetConnection("/Alan.hsiang");

                channel = conn.CreateModel();
                channel.ExchangeDeclare(exchange: "amq.fanout", type: ExchangeType.Fanout,durable:true);
                //此处随机取出交换机下的队列
                //var queueName = channel.QueueDeclare().QueueName;
                channel.QueueBind(queue: queueName, exchange: "amq.fanout", routingKey: "");
                consumer = new EventingBasicConsumer(channel);
                consumer.Received += (model, ea) =>
                {
                    var body = ea.Body.ToArray();
                    var message = Encoding.UTF8.GetString(body);
                    //Console.WriteLine(" [x] Received {0}", message);
                    if (OnReceiveEvent != null)
                    {
                        OnReceiveEvent(queueName+"::"+message);
                    }
                };
                channel.BasicConsume(queue: queueName,
                                        autoAck: true,
                                        consumer: consumer);
                return true;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }