RabbitMQ通过Exchange.topic 对routingkey 进行正则表达式匹配

消费者：

 static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "192.168.254.40",
                UserName = "admin",
                Password = "admin",
            };

            //第一步：创建connection 
            var connection = factory.CreateConnection();

            //第二步：创建一个channel
            var channel = connection.CreateModel();

            //第三步：申明交换机【因为rabbitmq已经有了自定义的ampq default exchange】
            channel.ExchangeDeclare("mytopicexchange", ExchangeType.Topic, true, false, null);

            //第四步：创建一个队列(queue)
            channel.QueueDeclare("mytopicqueue", true, false, false, null);

            //将queue绑定到exchange之上。。。。
            channel.QueueBind("mytopicqueue", "mytopicexchange", "*.com", null);

            EventingBasicConsumer consumer = new EventingBasicConsumer(channel);

            consumer.Received += (sender, e) =>
            {
                var msg = Encoding.UTF8.GetString(e.Body);

                Console.WriteLine(msg);
            };

            channel.BasicConsume("mytopicqueue", true, consumer);

            Console.WriteLine("consumer1 端启动完毕！！！");

            Console.Read();
        }

生产者：

static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "192.168.254.40",
                UserName = "admin",
                Password = "admin",
            };

            //第一步：创建connection
            var connection = factory.CreateConnection();

            //第二步：创建一个channel
            var channel = connection.CreateModel();

            for (int i = 0; i < 100; i++)
            {
                var msg = Encoding.UTF8.GetBytes(string.Format("{0} :{1}", i, "你好"));

                var routingKey = i % 13 == 0 ? "a.com" : "*.cn";

                //第五步：发布消息
                channel.BasicPublish("mytopicexchange", routingKey: routingKey, basicProperties: null, body: msg);

                Console.WriteLine(i);
            }
        }

当生产者routingkey 为a.com,消费者*.com 会匹配上