1、去ActiveMQ官方网站下载最新版的ActiveMQ,我之前下的是5.3.1,5.3.2如今也已出来了。
2、去ActiveMQ官方网站下载最新版的Apache.NMS,须要下载Apache.NMS和Apache.NMS.ActiveMQ两个bin包,假如对源码感兴趣,也可下载src包。这里要提示一下,假如下载1.2.0版本的NMS.ActiveMQ,Apache.NMS.ActiveMQ.dll在实际使用中有个bug,即住手ActiveMQ运用时会抛WaitOne函数非常,检察src包中的源码发现是因为Apache.NMS.ActiveMQ-1.2.0-src\src\main\csharp\Transport\InactivityMonitor.cs中的以下代码形成的,修正一下源码从新编译即可。看了一下最新版1.3.0已修复了这个bug,因而下载最新版即可。
private void StopMonitorThreads() { lock(monitor) { if(monitorStarted.CompareAndSet(true, false)) { AutoResetEvent shutdownEvent = new AutoResetEvent(false); // Attempt to wait for the Timers to shutdown, but don't wait // forever, if they don't shutdown after two seconds, just quit. this.readCheckTimer.Dispose(shutdownEvent); shutdownEvent.WaitOne(TimeSpan.FromMilliseconds(2000)); this.writeCheckTimer.Dispose(shutdownEvent); shutdownEvent.WaitOne(TimeSpan.FromMilliseconds(2000)); //WaitOne的定义:public virtual bool WaitOne(TimeSpan timeout,bool exitContext) this.asyncTasks.Shutdown(); this.asyncTasks = null; this.asyncWriteTask = null; this.asyncErrorTask = null; } } } private void StopMonitorThreads() { lock(monitor) { if(monitorStarted.CompareAndSet(true, false)) { AutoResetEvent shutdownEvent = new AutoResetEvent(false); // Attempt to wait for the Timers to shutdown, but don't wait // forever, if they don't shutdown after two seconds, just quit. this.readCheckTimer.Dispose(shutdownEvent); shutdownEvent.WaitOne(TimeSpan.FromMilliseconds(2000)); this.writeCheckTimer.Dispose(shutdownEvent); shutdownEvent.WaitOne(TimeSpan.FromMilliseconds(2000)); //WaitOne的定义:public virtual bool WaitOne(TimeSpan timeout,bool exitContext) this.asyncTasks.Shutdown(); this.asyncTasks = null; this.asyncWriteTask = null; this.asyncErrorTask = null; } } }
3、运转ActiveMQ,找到ActiveMQ解压后的bin文件夹:...\apache-activemq-5.3.1\bin,实行activemq.bat批处理文件即可启动ActiveMQ服务器,默许端口为61616,这可在配置文件中修正。
4、写C#顺序完成ActiveMQ的简朴运用。新建C#工程(一个Producter项目和一个Consumer项目),WinForm或Console顺序都可,这里建的是Console工程,添加对Apache.NMS.dll和Apache.NMS.ActiveMQ.dll的援用,然后即可编写完成代码了,简朴的Producer和Consumer完成代码以下:
producer:
using System; using System.Collections.Generic; using System.Text; using Apache.NMS; using Apache.NMS.ActiveMQ; using System.IO; using System.Xml.Serialization; using System.Runtime.Serialization.Formatters.Binary; namespace Publish { class Program { static void Main(string[] args) { try { //Create the Connection Factory IConnectionFactory factory = new ConnectionFactory("tcp://localhost:61616/"); using (IConnection connection = factory.CreateConnection()) { //Create the Session using (ISession session = connection.CreateSession()) { //Create the Producer for the topic/queue IMessageProducer prod = session.CreateProducer( new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic("testing")); //Send Messages int i = 0; while (!Console.KeyAvailable) { ITextMessage msg = prod.CreateTextMessage(); msg.Text = i.ToString(); Console.WriteLine("Sending: " + i.ToString()); prod.Send(msg, Apache.NMS.MsgDeliveryMode.NonPersistent, Apache.NMS.MsgPriority.Normal, TimeSpan.MinValue); System.Threading.Thread.Sleep(5000); i++; } } } Console.ReadLine(); } catch (System.Exception e) { Console.WriteLine("{0}",e.Message); Console.ReadLine(); } } } }
consumer:
using System; using System.Collections.Generic; using System.Text; using Apache.NMS; using Apache.NMS.ActiveMQ; using System.IO; using System.Xml.Serialization; using System.Runtime.Serialization.Formatters.Binary; namespace Subscribe { class Program { static void Main(string[] args) { try { //Create the Connection factory IConnectionFactory factory = new ConnectionFactory("tcp://localhost:61616/"); //Create the connection using (IConnection connection = factory.CreateConnection()) { connection.ClientId = "testing listener"; connection.Start(); //Create the Session using (ISession session = connection.CreateSession()) { //Create the Consumer IMessageConsumer consumer = session.CreateDurableConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic("testing"), "testing listener", null, false); consumer.Listener += new MessageListener(consumer_Listener); Console.ReadLine(); } connection.Stop(); connection.Close(); } } catch (System.Exception e) { Console.WriteLine(e.Message); } } static void consumer_Listener(IMessage message) { try { ITextMessage msg = (ITextMessage)message; Console.WriteLine("Receive: " + msg.Text); } catch (System.Exception e) { Console.WriteLine(e.Message); } } } }
顺序完成的功用:生产者producer竖立名为testing的主题,并每隔5秒向该主题发送音讯,消费者consumer定阅了testing主题,因而只需生产者发送testing主题的音讯到ActiveMQ服务器,服务器就将该音讯发送给定阅了testing主题的消费者。
编译生成producer.exe和consumer.exe,并实行两个exe,即可看到音讯的发送与接收了。
这个例子是建的主题(Topic),ActiveMQ还支撑另一种体式格局:Queue,即P2P,二者有什么区分呢?区分在于,Topic是播送,即假如某个Topic被多个消费者定阅,那末只需有音讯抵达服务器,服务器就将该音讯发给悉数的消费者;而Queue是点到点,即一个音讯只能发给一个消费者,假如某个Queue被多个消费者定阅,没有特殊情况的话音讯会一个一个地轮番发给差别的消费者,比方:
msg1-->consumer A
msg2-->consumer B
msg3-->consumer C
msg4-->consumer A
msg5-->consumer B
msg6-->consumer C
特殊情况是指:ActiveMQ支撑过滤机制,即生产者能够设置音讯的属性(Properties),该属性与消费者端的Selector对应,只要消费者设置的selector与音讯的Properties婚配,音讯才会发给该消费者。Topic和Queue都支撑Selector。
Properties和Selector该怎样设置呢?请看以下代码:
producer:
public void SetProperties() { ITextMessage msg = prod.CreateTextMessage(); msg.Text = i.ToString(); msg.Properties.SetString("myFilter", "test1"); Console.WriteLine("Sending: " + i.ToString()); prod.Send(msg, Apache.NMS.MsgDeliveryMode.NonPersistent, Apache.NMS.MsgPriority.Normal, TimeSpan.MinValue); ITextMessage msg = prod.CreateTextMessage(); msg.Text = i.ToString(); msg.Properties.SetString("myFilter", "test1"); Console.WriteLine("Sending: " + i.ToString()); prod.Send(msg, Apache.NMS.MsgDeliveryMode.NonPersistent, Apache.NMS.MsgPriority.Normal, TimeSpan.MinValue); }
consumer:
public void SetSelector() { //生成consumer时经由过程参数设置Selector IMessageConsumer consumer = session.CreateConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue("testing"), "myFilter='test1'"); //生成consumer时经由过程参数设置Selector IMessageConsumer consumer = session.CreateConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue("testing"), "myFilter='test1'"); }
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