rabbitmq的使用

1安装rabbitmq先要安装erlang，这里就不演示了（两个版本要适应）

2nuget包（RabbitMQ.Client）

3appsetting配置（这里选择rabbitmq默认的）

 "RabbitMQ": {
    "MessageMQUserName": "guest",   //我选的是默认的用户，也可以自行添加，添加新用户时，要给用户添加权限
    "MessageMQPassword": "guest",
    "MessageMQHostName": "5672",
    "MessageMQQueueName": "123456"    
  }

4配置类用来接收appsetting中的

 public class RabbitMQDto
    {
        public string MessageMQUserName { get; set; }
        public string MessageMQPassword { get; set; }
        public string MessageMQHostName { get; set; }
        public string MessageMQQueueName { get; set; }
    }

5注入

 services.Configure<RabbitMQDto>(Configuration.GetSection("RabbitMQ"));

6控制器使用（这里没有封装了，直接来用）

        private readonly RabbitMQDto _rabbitMQDto;
        public DemoController(IOptionsMonitor<RabbitMQDto> rabbitMQDto)
        {
            _rabbitMQDto = rabbitMQDto.CurrentValue;
        }
        /// <summary>
        /// 发送消息
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        public void RabbitMQ()
        {
            var a = _rabbitMQDto.MessageMQUserName;
            ConnectionFactory factory = new ConnectionFactory
            {
                UserName = _rabbitMQDto.MessageMQUserName,
                Password = _rabbitMQDto.MessageMQPassword,
                HostName = "localhost",
                Port = 5672,
            };
            using (IConnection con = factory.CreateConnection())//创建连接对象
            {
                using (IModel channel = con.CreateModel())//创建连接会话对象
                {

                    //声明一个队列
                    channel.QueueDeclare(
                      queue: _rabbitMQDto.MessageMQQueueName,//消息队列名称
                      durable: false,//是否缓存
                      exclusive: false,
                      autoDelete: false,
                      arguments: null
                       );
                    for (int i = 0; i < 10; i++)
                    {
                        Console.WriteLine("消息内容:");
                        var message = "233";
                        //消息内容
                        byte[] body = Encoding.UTF8.GetBytes(message);
                        //发送消息
                        channel.BasicPublish(exchange: "", routingKey: _rabbitMQDto.MessageMQQueueName, basicProperties: null, body: body);
                        Console.WriteLine("成功发送消息:" + message);
                    }
                }
            }

        }


        //接收消息
        public void GetInformationFromRabbitMQ()
        {
            Console.WriteLine("Start");
            IConnectionFactory connectionFactory = new ConnectionFactory
            {
                HostName = "localhost",
                Port = 5672,
                UserName = _rabbitMQDto.MessageMQUserName,
                Password = _rabbitMQDto.MessageMQPassword
            };
            using (IConnection conn = connectionFactory.CreateConnection())
            {
                using (IModel channel = conn.CreateModel())
                {
                    channel.QueueDeclare(
                         queue: _rabbitMQDto.MessageMQQueueName,
                         durable: false,  //是否缓存
                        exclusive: false,
                        autoDelete: false,
                        arguments: null

                        );
                    //创建消费者对象
                    var consumer = new EventingBasicConsumer(channel);
                    consumer.Received += (model, ea) =>
                    {

                        //byte[] message = ea.Body;//接受到的消息
                        var message = Encoding.UTF8.GetString(ea.Body.ToArray());
                        Console.WriteLine("接受到信息为：" + message);
                    };
                    //消费者开启监听
                    channel.BasicConsume(queue
                        : _rabbitMQDto.MessageMQQueueName, autoAck: true, consumer: consumer);
                    Console.ReadKey();
                }
            }
        }