本文实例讲述了C#实现同Active MQ通讯的方法。分享给大家供大家参考,具体如下:
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#中的应用示例》 http://HdhCmsTestzzvips测试数据/article/87956.htm
* [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);
}
}
希望本文所述对大家C#程序设计有所帮助。
dy("nrwz");
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