Apache ActiveMQ™ -- NMS 简单同步消费者示例
本示例演示如何创建和使用 NMS 消费者来同步地消费消息。
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using System;
using Apache.NMS;
using Apache.NMS.Util;
namespace Apache.NMS.ActiveMQ.Test
{
public class TestMain
{
public static void Main(string\[\] args)
{
// Example connection strings:
// activemq:tcp://activemqhost:61616
// stomp:tcp://activemqhost:61613
// ems:tcp://tibcohost:7222
// msmq://127.0.0.1
Uri connecturi = new Uri("activemq:tcp://activemqhost:61616");
Console.WriteLine("About to connect to " + connecturi);
// NOTE: ensure the nmsprovider-activemq.config file exists in the executable folder.
IConnectionFactory factory = new NMSConnectionFactory(connecturi);
using(IConnection connection = factory.CreateConnection())
using(ISession session = connection.CreateSession())
{
// Examples for getting a destination:
//
// Hard coded destinations:
// IDestination destination = session.GetQueue("FOO.BAR");
// Debug.Assert(destination is IQueue);
// IDestination destination = session.GetTopic("FOO.BAR");
// Debug.Assert(destination is ITopic);
//
// Embedded destination type in the name:
// IDestination destination = SessionUtil.GetDestination(session, "queue://FOO.BAR");
// Debug.Assert(destination is IQueue);
// IDestination destination = SessionUtil.GetDestination(session, "topic://FOO.BAR");
// Debug.Assert(destination is ITopic);
//
// Defaults to queue if type is not specified:
// IDestination destination = SessionUtil.GetDestination(session, "FOO.BAR");
// Debug.Assert(destination is IQueue);
//
// .NET 3.5 Supports Extension methods for a simplified syntax:
// IDestination destination = session.GetDestination("queue://FOO.BAR");
// Debug.Assert(destination is IQueue);
// IDestination destination = session.GetDestination("topic://FOO.BAR");
// Debug.Assert(destination is ITopic);
IDestination destination = SessionUtil.GetDestination(session, "queue://FOO.BAR");
Console.WriteLine("Using destination: " + destination);
// Create a consumer and producer
using(IMessageConsumer consumer = session.CreateConsumer(destination))
using(IMessageProducer producer = session.CreateProducer(destination))
{
// Start the connection so that messages will be processed.
connection.Start();
producer.DeliveryMode = MsgDeliveryMode.Persistent;
// Send a message
ITextMessage request = session.CreateTextMessage("Hello World!");
request.NMSCorrelationID = "abc";
request.Properties\["NMSXGroupID"\] = "cheese";
request.Properties\["myHeader"\] = "Cheddar";
producer.Send(request);
// Consume a message
ITextMessage message = consumer.Receive() as ITextMessage;
if(message == null)
{
Console.WriteLine("No message received!");
}
else
{
Console.WriteLine("Received message with ID: " + message.NMSMessageId);
Console.WriteLine("Received message with text: " + message.Text);
}
}
}
}
}
}