Question

我是RabbitMQ的新手，我很难找到一个VS2017 C＃示例，该示例可以打印到控制台。我可以发送和接收消息没问题，但我想获取消息的内容并实际使用它。以下是我的代码：

using System.Text;
using RabbitMQ.Client;
using RabbitMQ.Client.Events;
using System.IO;

namespace MyCode
{
  class Program
  {
    public static void Main()
    {
      var factory = new ConnectionFactory() { HostName = "xxx.xx.x.x", UserName = "MyTest", Password = "MyTest", Port = 5672 };
      using (var connection = factory.CreateConnection())
      {
        using (var channel = connection.CreateModel())
        {

          channel.QueueDeclare(queue: "MyTest", durable: false, exclusive: false, autoDelete: false, arguments: null);

          var consumer = new EventingBasicConsumer(channel);
          consumer.Received += (model, ea) =>
          {
            var body = ea.Body;
            var message = Encoding.UTF8.GetString(body);
            DoSomething(message);
          };

          channel.BasicConsume(queue: "MyTest", autoAck: true, consumer: consumer);
        }
      }
    }
    static void DoSomething(string message)
    {
      File.AppendAllText(@"C:\RMQ.txt", message);
    }
  }
}

问题是，我似乎无法从Consumer.Received步骤中获得任何东西。任何帮助将不胜感激！

EDIT ::

我能够通过使用此代码使其工作：

  var factory = new ConnectionFactory() { HostName = "xxx.xx.x.x", UserName = "MyTest", Password = "MyTest", Port = 5672 };
  using (IConnection connection = factory.CreateConnection())
  {
    using (IModel channel = connection.CreateModel())
    {

      channel.QueueDeclare(queue: "MyTest", durable: false, exclusive: false, autoDelete: false, arguments: null);

      BasicGetResult consumer = channel.BasicGet("MyTest", true);

      if (consumer != null)
      {
        string message = Encoding.UTF8.GetString(consumer.Body);
        DoSomething(message);
      }

    }
  }

有人看到有任何问题吗？

Answer 1

第一段代码的问题在于程序在处理任何消息之前完成执行。 EventingBasedConsumer是异步的，并且实际上不会阻止您的程序退出。您需要实现某种等待以便能够实际处理消息。尝试在Thread.Sleep(10000);之后添加Channel.BasicConsume并检查是否有任何消息正在处理中。

RabbitMQ C＃实例

1 个答案: