1、准备工具
VS2013Apache.NMS.ActiveMQ-1.7.2-bin.zip
apache-activemq-5.14.0-bin.zip
apache-activemq-5.14.0-bin.zip
2、开始项目
VS2013新建一个C#控制台应用程序,项目中添加两个dll引用,一个是D:Apache.NMS.ActiveMQ-1.7.2-binlibApache.NMS
et-4.0目录下的Apache.NMS.dll,另一个是D:Apache.NMS.ActiveMQ-1.7.2-binuild
et-4.0debug目录下的Apache.NMS.ActiveMQ.dll。
新建一个类,MyActiveMq.cs,用于对activemq消息队列接口的封装,实现如下:
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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using Apache.NMS; using Apache.NMS.ActiveMQ; namespace NmsProducerClasses { public class MyActiveMq { private IConnectionFactory factory; private IConnection connection; private ISession session; private IMessageProducer prod; private IMessageConsumer consumer; private ITextMessage msg; private bool isTopic = false ; private bool hasSelector = false ; private const string ClientID = "clientid" ; private const string Selector = "filter='demo'" ; private bool sendSuccess = true ; private bool receiveSuccess = true ; public MyActiveMq(bool isLocalMachine, string remoteAddress) { try { //初始化工厂 if (isLocalMachine) { } else { factory = new ConnectionFactory( "tcp://" + remoteAddress + ":61616/" ); //写tcp:// 192.168 . 1.111 : 61616 的形式连接其他服务器上的ActiveMQ服务器 } //通过工厂建立连接 connection = factory.CreateConnection(); connection.ClientId = ClientID; connection.Start(); //通过连接创建Session会话 session = connection.CreateSession(); } catch (System.Exception e) { sendSuccess = false ; receiveSuccess = false ; Console.WriteLine( "Exception:{0}" , e.Message); Console.ReadLine(); throw e; } Console.WriteLine( "Begin connection..." ); } ~MyActiveMq() { //this.ShutDown(); } /// <summary> /// 初始化 /// </summary> ///<param name="topic">选择是否是Topic ///<param name="name">队列名 ///<param name="selector">是否设置过滤 public bool InitQueueOrTopic(bool topic, string name, bool selector = false ) { try { //通过会话创建生产者、消费者 if (topic) { prod = session.CreateProducer( new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name)); if (selector) { consumer = session.CreateDurableConsumer( new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name), ClientID, Selector, false ); hasSelector = true ; } else { consumer = session.CreateDurableConsumer( new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name), ClientID, null , false ); hasSelector = false ; } isTopic = true ; } else { prod = session.CreateProducer( new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name)); if (selector) { consumer = session.CreateConsumer( new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name), Selector); hasSelector = true ; } else { consumer = session.CreateConsumer( new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name)); hasSelector = false ; } isTopic = false ; } //创建一个发送的消息对象 msg = prod.CreateTextMessage(); } catch (System.Exception e) { sendSuccess = false ; receiveSuccess = false ; Console.WriteLine( "Exception:{0}" , e.Message); Console.ReadLine(); throw e; } return sendSuccess; } public bool SendMessage(string message, string msgId = "defult" , MsgPriority priority = MsgPriority.Normal) { if (prod == null ) { sendSuccess = false ; Console.WriteLine( "call InitQueueOrTopic() first!!" ); return false ; } Console.WriteLine( "Begin send messages..." ); //给这个对象赋实际的消息 msg.NMSCorrelationID = msgId; msg.Properties[ "MyID" ] = msgId; msg.NMSMessageId = msgId; msg.Text = message; Console.WriteLine(message); if (isTopic) { sendSuccess = ProducerSubcriber(message, priority); } else { sendSuccess = P2P(message, priority); } return sendSuccess; } public string GetMessage() { if (prod == null ) { Console.WriteLine( "call InitQueueOrTopic() first!!" ); return null ; } Console.WriteLine( "Begin receive messages..." ); ITextMessage revMessage = null ; try { //同步阻塞10ms,没消息就直接返回null,注意此处时间不能设太短,否则还没取到消息就直接返回null了!!! revMessage = consumer.Receive( new TimeSpan(TimeSpan.TicksPerMillisecond * 10 )) as ITextMessage; } catch (System.Exception e) { receiveSuccess = false ; Console.WriteLine( "Exception:{0}" , e.Message); Console.ReadLine(); throw e; } if (revMessage == null ) { Console.WriteLine( "No message received!" ); return null ; } else { Console.WriteLine( "Received message with Correlation ID: " + revMessage.NMSCorrelationID); //Console.WriteLine("Received message with Properties'ID: " + revMessage.Properties["MyID"]); Console.WriteLine( "Received message with text: " + revMessage.Text); } return revMessage.Text; } //P2P模式,一个生产者对应一个消费者 private bool P2P(string message, MsgPriority priority) { try { if (hasSelector) { //设置消息对象的属性,这个很重要,是Queue的过滤条件,也是P2P消息的唯一指定属性 msg.Properties.SetString( "filter" , "demo" ); //P2P模式 } prod.Priority = priority; //设置持久化 prod.DeliveryMode = MsgDeliveryMode.Persistent; //生产者把消息发送出去,几个枚举参数MsgDeliveryMode是否持久化,MsgPriority消息优先级别,存活时间,当然还有其他重载 prod.Send(msg, MsgDeliveryMode.Persistent, priority, TimeSpan.MinValue); } catch (System.Exception e) { sendSuccess = false ; Console.WriteLine( "Exception:{0}" , e.Message); Console.ReadLine(); throw e; } return sendSuccess; } //发布订阅模式,一个生产者多个消费者 private bool ProducerSubcriber(string message, MsgPriority priority) { try { prod.Priority = priority; //设置持久化,如果DeliveryMode没有设置或者设置为NON_PERSISTENT,那么重启MQ之后消息就会丢失 prod.DeliveryMode = MsgDeliveryMode.Persistent; prod.Send(msg, Apache.NMS.MsgDeliveryMode.Persistent, priority, TimeSpan.MinValue); //System.Threading.Thread.Sleep(1000); } catch (System.Exception e) { sendSuccess = false ; Console.WriteLine( "Exception:{0}" , e.Message); Console.ReadLine(); throw e; } return sendSuccess; } public void ShutDown() { Console.WriteLine( "Close connection and session..." ); session.Close(); connection.Close(); } } } |
Program.cs代码如下:
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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; using System.Threading; namespace NmsProducerClasses { class Program { static void Main(string[] args) { MyActiveMq mymq = new MyActiveMq(isLocalMachine: true , remoteAddress: "" ); mymq.InitQueueOrTopic(topic: false , name: "myqueue" , selector: false ); //mymq.InitQueueOrTopic(topic: false, name: "seletorqueue", selector: true); //mymq.InitQueueOrTopic(topic: true, name: "noselectortopic", selector: false); //mymq.InitQueueOrTopic(topic: true, name: "selectortopic", selector: true); //The full range of priority values (0-9) are supported by the JDBC message store. For KahaDB three priority categories are supported, Low (< 4), Default (= 4) and High (> 4). User myuser0 = new User( "0000" , "Lowest" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser0), "newid" , priority: Apache.NMS.MsgPriority.Lowest); User myuser1 = new User( "1111" , "AboveLow" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser1), "newid" , priority: Apache.NMS.MsgPriority.AboveLow); User myuser2 = new User( "2222" , "AboveNormal" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser2), "newid" , priority: Apache.NMS.MsgPriority.AboveNormal); User myuser3 = new User( "0000" , "BelowNormal" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser3), "newid" , priority: Apache.NMS.MsgPriority.BelowNormal); User myuser4 = new User( "1111" , "High" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser4), "newid" , priority: Apache.NMS.MsgPriority.High); User myuser5 = new User( "2222" , "Highest" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser5), "newid" , priority: Apache.NMS.MsgPriority.Highest); User myuser6 = new User( "0000" , "Low" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser6), "newid" , priority: Apache.NMS.MsgPriority.Low); User myuser7 = new User( "1111" , "Normal" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser7), "newid" , priority: Apache.NMS.MsgPriority.Normal); User myuser8 = new User( "2222" , "VeryHigh" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser8), "newid" , priority: Apache.NMS.MsgPriority.VeryHigh); User myuser9 = new User( "2222" , "VeryLow" , "img/p.jpg" ); mymq.SendMessage(JsonUtil.ObjectToJson(myuser8), "newid" , priority: Apache.NMS.MsgPriority.VeryLow); int num = 20 ; while (num-- > 0 ) { mymq.GetMessage(); //Thread.Sleep(1000); } mymq.ShutDown(); //XML测试 //string xml = XmlTest.ObjToXml(); //Console.WriteLine("ObjToXml: {0}", xml); //Json测试 //User u = new User() { Id="88", Imgurl="img/88.jpg", Name="haha88"}; //string jsonstr = JsonUtil.ObjectToJson(u); //Console.WriteLine(jsonstr); } } |
3、测试
首先,需要启动消息队列,具体启动及测试消息队列步骤可见这边:点击打开链接
然后,运行项目,运行结果如下:
4、存在问题
priority并不能决定消息传送的严格消息,具体原因可见