c# rabbitmq 简单收发消息的示例代码
发布消息:(生产者)
/// <summary> /// 发送消息 /// </summary> /// <param name="queue">队列名</param> /// <param name="message">消息内容</param> private static void PublishInfo(string queue, string message) { try { var factory = new ConnectionFactory(); factory.HostName = "localhost";//RabbitMQ服务在本地运行 factory.UserName = "guest";//用户名 factory.Password = "guest";//密码 using (var connection = factory.CreateConnection()) { using (var channel = connection.CreateModel()) { bool durable = true;//将消息标记为持久性 channel.QueueDeclare(queue, durable, false, false, null); IBasicProperties properties = channel.CreateBasicProperties(); properties.DeliveryMode = 2; var body = Encoding.UTF8.GetBytes(message); channel.BasicPublish("", queue, properties, body); //开始传递 } } } catch (System.Exception ex) { Console.WriteLine(ex.ToString()); } Console.ReadLine(); }
使用:
PublishInfo("test", "222222222222");
点击test进入队列内部:
消费消息:
方法一:旧版可用
private static void ConsumeInfo(string queue) { try { var factory = new ConnectionFactory(); factory.HostName = "localhost";//RabbitMQ服务在本地运行 factory.UserName = "guest";//用户名 factory.Password = "guest";//密码 using (var connection = factory.CreateConnection()) { using (var channel = connection.CreateModel()) { //bool durable = true;//将消息标记为持久性 //channel.QueueDeclare("sljcgx:finish-queue", durable, false, false, null);//声明队列,队列不存在则创建该队列 //设置prefetchCount : 1来告知RabbitMQ,在未收到消费端的消息确认时,不再分发消息,也就确保了当消费端处于忙碌状态时,不再分配任务。 channel.BasicQos(prefetchSize: 0, prefetchCount: 1, global: false); var consumer = new QueueingBasicConsumer(channel); //false为手动确认,获取消息后需要添加 channel.BasicAck(ea.DeliveryTag, false)确认 //true则为自动确认,不需要这行代码 channel.BasicConsume(queue, false, consumer); while (true) { try { var ea = (BasicDeliverEventArgs)consumer.Queue.Dequeue();//阻塞函数,获取队列中的消息 var bodyReceive = ea.Body; string message = Encoding.UTF8.GetString(bodyReceive); Console.WriteLine(message); channel.BasicAck(ea.DeliveryTag, false);// 消息确认信号,确认后该消息将从队列里移除 } catch (System.Exception ex) { Console.WriteLine(ex.Message); } } } } } catch (System.Exception ex) { Console.WriteLine(ex.ToString()); } Console.ReadLine(); }
方法二:(通用)
private static void ConsumeInfo2(string queue) { try { var factory = new ConnectionFactory(); factory.HostName = "localhost";//RabbitMQ服务在本地运行 factory.UserName = "guest";//用户名 factory.Password = "guest";//密码 var connection = factory.CreateConnection(); var channel = connection.CreateModel(); channel.QueueDeclare(queue, true, false, false, null);//声明队列,队列不存在则创建该队列 channel.BasicQos(0, 1, false);//公平分发、同一时间只处理一个消息。 var consumer = new EventingBasicConsumer(channel); //消费者(指定消息通道)该事件在接收到消息时触发 consumer.Received += (sender, e) => { byte[] body = e.Body.ToArray(); //消息字节数组 string message = Encoding.UTF8.GetString(body); //消息内容 Console.WriteLine(message); channel.BasicAck(e.DeliveryTag, false); //手工确认 }; channel.BasicConsume(queue, false, consumer); //消费消息(在当前通道中监听 queue 队列,并进行消费) Console.ReadLine(); connection.Close(); channel.Close(); } catch (System.Exception ex) { Console.WriteLine(ex.ToString()); } }
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