public void Received(string topic, Action <string> handler)
{
IConnection conn = RabbitMQConnectionFactory.CreateConnection();
IModel channel = conn.CreateModel();
string queueName = $"{topic}.qu";
channel.QueueDeclare(queueName, false, false, false, null);
channel.BasicQos(prefetchSize: 0, prefetchCount: 1, global: false);
var consumer = new EventingBasicConsumer(channel);
consumer.Received += (model, ea) =>
{
var msg = Encoding.UTF8.GetString(ea.Body);
handler?.Invoke(msg);
//处理完成，告诉Broker可以服务端可以删除消息，分配新的消息过来
channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
};
//noAck设置false,告诉broker，发送消息之后，消息暂时不要删除，等消费者处理完成再说
channel.BasicConsume(queueName, autoAck: false, consumer: consumer);
}
private static IConnection GetConnection()
{
if (conn == null)
{
lock (padlock)
{
if (conn == null)
{
conn = RabbitMQConnectionFactory.CreateConnection();
}
}
}
return(conn);
}