Active MQ C#实现
原文链接:
内容概要
主要以源码的形式介绍如何用C#实现同Active MQ 的通讯。本文假设你已经正确安装JDK1.6.x,了解Active MQ并有一定的编程基础。
正文
JMS 程序的最终目的是生产和消费的消息能被其他程序使用,JMS 的 Message 是一个既简单又不乏灵活性的基本格式,允许创建不同平台上符合非JMS 程序格式的消息。
Message 由消息头,属性和消息体三部份组成。
Active MQ支持过滤机制,即生产者可以设置消息的属性(Properties),该属性与消费者端的Selector对应,只有消费者设置的selector与消息的Properties匹配,消息才会发给该消费者。Topic和Queue都支持Selector。
示例代码
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using Apache.NMS; using System.Diagnostics; using Apache.NMS.Util; using System.Windows.Threading; /* * 功能描述:C#使用ActiveMQ示例 * 修改次数:2 * 最后更新: by Kagula,2012-07-31 * * 前提条件: * [1]apache-activemq-5.4.2 * [2]Apache.NMS.ActiveMQ-1.5.6-bin * [3]WinXP SP3 * [4]VS2008 SP1 * [5]WPF工程 With .NET Framework 3.5 * * 启动 * * 不带安全控制方式启动 * [你的解压路径]\apache-activemq-5.4.2\bin\activemq.bat * * 安全方式启动 * 添加环境变量: ACTIVEMQ_ENCRYPTION_PASSWORD=activemq * [你的解压路径]\apache-activemq-5.4.2\bin>activemq xbean:file:../conf/activemq-security.xml * * Active MQ 管理地址 * http://127.0.0.1:8161/admin/ * 添加访问"http://127.0.0.1:8161/admin/"的限制 * * 第一步:添加访问限制 * 修改D:\apache\apache-activemq-5.4.2\conf\jetty.xml文件 * 下面这行编码,原 * <property name="authenticate" value="true" /> * 修改为 * <property name="authenticate" value="false" /> * * 第二步:修改登录用户名密码,缺省分别为admin,admin * D:\apache\apache-activemq-5.4.2\conf\jetty-realm.properties * * 用户管理(前提:以安全方式启动ActiveMQ) * * 在[你的解压路径]\apache-activemq-5.4.2\conf\credentials.properties文件中修改默认的用户名密码 * 在[你的解压路径]\apache-activemq-5.4.2\conf\activemq-security.xml文件中可以添加新的用户名 * e.g. 添加oa用户,密码同用户名。 * <authenticationUser username="oa" password="oa" groups="users,admins"/> * * 在[你的解压路径]\apache-activemq-5.4.2\conf\activemq-security.xml文件中你还可以设置指定的Topic或Queue * 只能被哪些用户组read 或 write。 * * * 配置C# with WPF项目 * 项目的[Application]->[TargetFramework]属性设置为[.NETFramework 3.5](这是VS2008WPF工程的默认设置) * 添加[你的解压路径]\Apache.NMS.ActiveMQ-1.5.6-bin\lib\Apache.NMS\net-3.5\Apache.NMS.dll的引用 * Apache.NMS.dll相当于接口 * * 如果是以Debug方式调试 * 把[你的解压路径]\Apache.NMS.ActiveMQ-1.5.6-bin\build\net-3.5\debug\目录下的 * Apache.NMS.ActiveMQ.dll文件复制到你项目的Debug目录下 * Apache.NMS.ActiveMQ.dll相当于实现 * * 如果是以Release方式调试 * 参考上文,去取Apache.NMS,Release目录下相应的DLL文件,并复制到你项目的Release目录下。 * * * 参考资料 * [1]《C#调用ActiveMQ官方示例》 http://activemq.apache.org/nms/examples.html * [2]《ActiveMQ NMS下载地址》http://activemq.apache.org/nms/activemq-downloads.html * [3]《Active MQ在C#中的应用》http://www.cnblogs.com/guthing/archive/2010/06/17/1759333.html * [4]《NMS API Reference》http://activemq.apache.org/nms/nms-api.html */ namespace testActiveMQSubscriber { /// <summary> /// Interaction logic for Window1.xaml /// </summary> public partial class Window1 : Window { private static IConnectionFactory connFac; private static IConnection connection; private static ISession session; private static IDestination destination; private static IMessageProducer producer; private static IMessageConsumer consumer; protected static ITextMessage message = null; public Window1() { InitializeComponent(); initAMQ("MyFirstTopic"); } private void initAMQ(String strTopicName) { try { connFac = new NMSConnectionFactory(new Uri("activemq:failover:(tcp://localhost:61616)")); //新建连接 //connection = connFac.CreateConnection("oa","oa");//设置连接要用的用户名、密码 //如果你要持久“订阅”,则需要设置ClientId,这样程序运行当中被停止,恢复运行时,能拿到没接收到的消息! connection.ClientId = "testing listener"; connection = connFac.CreateConnection();//如果你是缺省方式启动Active MQ服务,则不需填用户名、密码 //创建Session session = connection.CreateSession(); //发布/订阅模式,适合一对多的情况 destination = SessionUtil.GetDestination(session, "topic://" + strTopicName); //新建生产者对象 producer = session.CreateProducer(destination); producer.DeliveryMode = MsgDeliveryMode.NonPersistent;//ActiveMQ服务器停止工作后,消息不再保留 //新建消费者对象:普通“订阅”模式 //consumer = session.CreateConsumer(destination);//不需要持久“订阅” //新建消费者对象:持久"订阅"模式: // 持久“订阅”后,如果你的程序被停止工作后,恢复运行, //从第一次持久订阅开始,没收到的消息还可以继续收 consumer = session.CreateDurableConsumer( session.GetTopic(strTopicName) , connection.ClientId, null, false); //设置消息接收事件 consumer.Listener += new MessageListener(OnMessage); //启动来自Active MQ的消息侦听 connection.Start(); } catch (Exception e) { //初始化ActiveMQ连接失败,往VS2008的Output窗口写入出错信息! Debug.WriteLine(e.Message); } } private void SendMsg2Topic_Click(object sender, RoutedEventArgs e) { //发送消息 ITextMessage request = session.CreateTextMessage(DateTime.Now.ToLocalTime()+" "+tbMsg.Text); producer.Send(request); } protected void OnMessage(IMessage receivedMsg) { //接收消息 message = receivedMsg as ITextMessage; //UI线程,显示收到的消息 Dispatcher.Invoke(DispatcherPriority.Normal, new Action(() => { DateTime dt = new DateTime(); ListBoxItem lbi = new ListBoxItem(); lbi.Content = DateTime.Now.ToLocalTime() + " " + message.Text; lbR.Items.Add(lbi); })); } } }
队列通讯方式,消费者例子
using System; using System.Collections.Generic; using System.Linq; using System.Text; using Apache.NMS; using System.Diagnostics; using log4net; using Apache.NMS.Util; using System.Collections; namespace Cat8637AutoCallServer { public class SMTask { public String Callee { get; set; } public String CheckNumber { get; set; } public int Deadline { get; set; } public override String ToString() { return String.Format("Callee={0},CheckNumber={1},Deadline={2}", Callee,CheckNumber,Deadline); } } /* * 负责接收任务,并把任务放在任务等待队列中。 */ public class MQClient { private static readonly ILog logger = LogManager.GetLogger(typeof(MQClient)); private static IConnection connection = null; private static ISession session = null; Queue _voiceSMTasks = new Queue(); public MQClient() { try { IConnectionFactory factory = new NMSConnectionFactory(new Uri("activemq:failover:(tcp://localhost:61616)")); //新建连接 //connection = connFac.CreateConnection("oa","oa");//设置连接要用的用户名、密码 connection = factory.CreateConnection(); session = connection.CreateSession(); IMessageConsumer consumer = session.CreateConsumer(session.GetQueue("TaskIssue_VoiceSM")); consumer.Listener += new MessageListener(OnMessage); connection.Start(); } catch (Exception ex) { Debug.WriteLine(ex.Message); } } protected void OnMessage(IMessage receivedMsg) { IMessage message = receivedMsg as ITextMessage; SMTask smTask = new SMTask(); smTask.Callee = message.Properties["Callee"] as String; smTask.CheckNumber = message.Properties["Message"] as String; smTask.Deadline = Convert.ToInt32(message.Properties["deadline"] as String); logger.Info("Received: "+smTask.ToString()); lock (_voiceSMTasks) { _voiceSMTasks.Enqueue(smTask); } } public SMTask GetVoiceSMTask() { SMTask result = null; lock (_voiceSMTasks) { if (_voiceSMTasks.Count > 0) { result = _voiceSMTasks.Dequeue() as SMTask; } } return result; } } }
队列通讯方式,生产者例子
private void Send_Click(object sender, RoutedEventArgs e) { try { IDestination destination = SessionUtil.GetDestination(session, "queue://TaskIssue_VoiceSM"); //新建生产者对象 IMessageProducer producer = session.CreateProducer(destination); producer.DeliveryMode = MsgDeliveryMode.NonPersistent;//ActiveMQ服务器停止工作后,消息不再保留 ITextMessage request = session.CreateTextMessage(); request.NMSCorrelationID = "TestVoiceSM";//这里我填了应用程序的名称。 request.Properties["Callee"] = tbCallee.Text; request.Properties["Message"] = tbCheckNumber.Text; request.Properties["deadline"] = tbValidDuration.Text; producer.Send(request); } catch (Exception ex) { //初始化ActiveMQ连接失败,往VS2008的Output窗口写入出错信息! Debug.WriteLine(ex.Message); } } private void Window_Closed(object sender, EventArgs e) { try { if (session == null) return; //if (connection == null) // return; session.Close(); //connection.Close(); } catch (Exception ex) { Debug.WriteLine(ex.Message); } }