netcore rabbitMq

    public class RabbitConf 
    {
        public string HostName { get; set; }
        public string UserName { get; set; }
        public string Password { get; set; }
        public string Port { get; set; }
    }

    public abstract class RabbitListenerService : IHostedService
    {
        private IConnection connection = null;
        private IModel channel = null;

        protected string Exchange;
        protected string RouteKey;
        protected string QueueName;

        public RabbitListenerService()
        {
            try
            {
                var config = LocalAppsetting.GetSettingNode("Startup", "RabbitMq")?.FirstOrDefault();
                var factory = new ConnectionFactory()
                {
                    HostName = config.HostName,
                    UserName = config.UserName,
                    Password = config.Password,
                };

                if (!string.IsNullOrEmpty(config.Port))
                {
                    factory.Port = Convert.ToInt32(config.Port);
                }
                connection = factory.CreateConnection();
                channel = connection.CreateModel();
            }
            catch (Exception ex)
            {
                Log4netHelper.Error(ex.Message +Environment.NewLine+ ex.StackTrace);
            }
        }

        public Task StartAsync(CancellationToken cancellationToken)
        {
            Register();
            return Task.CompletedTask;
        }

        public async virtual Task<bool> Process(string message)
        {
            throw new NotImplementedException();
        }

        public void Register()
        {
            channel.ExchangeDeclare(Exchange, "topic", true, false, null);
            channel.QueueDeclare(QueueName, true, false, false, null);
            channel.QueueBind(QueueName, Exchange, RouteKey);

            var consumer = new EventingBasicConsumer(channel);
            consumer.Received += async (model, ea) =>
            {
                var body = ea.Body.ToArray();
                var message = Encoding.UTF8.GetString(body);
                var result = await Process(message);
                if (result)
                {
                    channel.BasicAck(ea.DeliveryTag, false);
                }
            };
            channel.BasicConsume(queue: QueueName, consumer: consumer);
        }

        public void DeRegister()
        {
            connection.Close();
        }

        public Task StopAsync(CancellationToken cancellationToken)
        {
            connection.Close();
            return Task.CompletedTask;
        }
    }

    public class RabbitErpFefundConfirmService : RabbitListenerService
    {
        private readonly IRefundServices _refundServices;

        public RabbitErpFefundConfirmService(IRefundServices refundServices)
        {
            Exchange = "ErpRefund";
            QueueName = "RefundConfirm";
            RouteKey = "RefundConfirm";
            _refundServices = refundServices;
        }

        public async override Task<bool> Process(string message)
        {
            try
            {
                Log4netHelper.Info(message);
                var msg = JsonConvert.DeserializeObject>(message);
                var result = await _refundServices.RefundAudit(msg);
                return result;
            }
            catch (Exception err)
            {
                Log4netHelper.Error(err.Message + Environment.NewLine + err.StackTrace);
                return false;
            }
        }

    }

    public class RabbitMqUtil
    {
        static ConnectionFactory GetConnectionFactory
        {
            get
            {
                var config = LocalAppsetting.GetSettingNode("Startup", "RabbitMq")?.FirstOrDefault();
                var factory = new ConnectionFactory()
                {
                    HostName = config.HostName,
                    UserName = config.UserName,
                    Password = config.Password,
                };

                if (!string.IsNullOrEmpty(config.Port))
                {
                    factory.Port = Convert.ToInt32(config.Port);
                }
                return factory;
            }
        }

        public static bool BasicPublish(string exchange, string routeKey, object msg, string queue = "")
        {
            try
            {
                using (var connection = GetConnectionFactory.CreateConnection())
                {
                    using (var channel = connection.CreateModel())
                    {
                        channel.ExchangeDeclare(exchange, "topic", true, false, null);
                        if (!string.IsNullOrEmpty(queue))
                        {
                            channel.QueueDeclare(queue, true, false, false, null);
                            channel.QueueBind(queue, exchange, $"#.{routeKey}.#", null);
                        }

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

                        string message = JsonConvert.SerializeObject(msg);
                        channel.BasicPublish(exchange, routeKey, properties, Encoding.UTF8.GetBytes(message));
                        return true;
                    }
                }
            }
            catch (Exception err)
            {
                Log4netHelper.Error("发送消息失败：" + err.Message);
                return false;
            }

        }
    }