MSMQ客户端代码（Oracle service bus）

今天做了一个MSMQ客户端（服务器是OSB）来帮助项目上找问题，代码很简单，发现MQ协议也很方便呢。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

using WebLogic.Messaging;

namespace jmsclient
{
    public partial class Form1 : Form
    {
        private string host = "10.18.105.40";
        private int port = 8201;
        private string cfName = "LESJMSCF";
        private string queueName = "VehicleOrderQueueIn";


        public IConnection connection = null;
        public IContext context = null;
        public IQueue queue = null;


        public Form1()
        {
            InitializeComponent();

            /*
            //10秒一次操作线程
            Control.CheckForIllegalCrossThreadCalls = false;
            Thread m1Thread = new Thread(new ThreadStart(m1));
            m1Thread.IsBackground = true;
            m1Thread.Start();
            */

            IDictionary<string, Object> paramMap = new Dictionary<string, Object>();
            paramMap[Constants.Context.PROVIDER_URL] = "10.18.105.40://" + this.host + ":" + this.port;
             context = ContextFactory.CreateContext(paramMap);

            IConnectionFactory cf = context.LookupConnectionFactory(this.cfName);
             queue = (IQueue)context.LookupDestination(this.queueName);
             connection = cf.CreateConnection();

            connection.Start();
        }





        private void m1()
        {

            IDictionary<string, Object> paramMap = new Dictionary<string, Object>();
            paramMap[Constants.Context.PROVIDER_URL] = "10.18.105.10://" + this.host + ":" + this.port;
            IContext context = ContextFactory.CreateContext(paramMap);

            IConnectionFactory cf = context.LookupConnectionFactory(this.cfName);
            IQueue queue = (IQueue)context.LookupDestination(this.queueName);
            IConnection connection = cf.CreateConnection();


            connection.Start();

            int total = 0;

            while (true)
            {
                Thread.Sleep(10 * 1000);

                string now = System.DateTime.Now.ToShortTimeString();     //得到现在的时间 

                ISession session = connection.CreateSession(Constants.SessionMode.AUTO_ACKNOWLEDGE);
                IMessageProducer producer = session.CreateProducer(queue);
                producer.DeliveryMode = Constants.DeliveryMode.PERSISTENT;
                ITextMessage sendMessage = session.CreateTextMessage("james's message   " + now );

                producer.Send(sendMessage);
                total++;
                label1.Text = "发送消息总数："+ total.ToString();



            }

           // connection.Close();
           // context.CloseAll();

        }

        private void button1_Click(object sender, EventArgs e)
        { 


            ISession session = connection.CreateSession(Constants.SessionMode.AUTO_ACKNOWLEDGE);
            IMessageConsumer consumer = session.CreateConsumer(queue);         

            IMessage recvMessage = consumer.Receive(500);


            try
            {
                listBox1.Items.Insert(0, ((ITextMessage)recvMessage).Text);
          
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
  

        }



        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            connection.Close();
            context.CloseAll();
        }

        
        


      
    }
}

---------2018.11.28-----WebLogic.Messaging.dll使用心得-------------------

和微软的LES团队交流，对这个WebLogic.Messaging.dll，做了更进一步的使用。

接收Queeu消息可以有2种办法，一种是显示的方法调用：

IMessage recvMessage = consumer.Receive(500);

一种是消息映射，在消息响应函数中处理得到的消息：

consumer.Message += new MessageEventHandler(this.OnMessage);
public void OnMessage(IMessageConsumer consumer, MessageEventArgs args)
{
}

如果长时间Q里没有数据接收，可能客户端到Q服务器的链接会断掉，所以需要定时的丢一个心跳消息在Q里。

再接收这个消息丢弃掉，这样可以保证链路一直可用。

按这个场景，我写了一个程序，启动一个工厂实例A-连接-生产者，每隔10秒去丢一个心跳消息在Q里,

再启动一个工厂实例B-连接-消费者用消息映射，在消息响应函数方法自动得到消息。

测试了几个小时，中间也手动发了好多包。结果非常稳定，1000多个包，一个没有丢。

MSMQ客户端代码（Oracle service bus）

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