分布式中Remoting的示例

我分别做了WebService和Remoting放在外网上进行测试，结果发现WebService的速度明显比Remoting慢许多，同样读取1000条数据，Remoting只需100毫秒左右（为什么外网的速度比本机的还快，本机要500毫秒左右？），所以决定使用Remoting来做数据传输。

 

首先，定义一个Model,这使用的是Sqlserver中的示例库Northwind

Code
using System;
using FaibClass.Data;

namespace FBS.Chance.DAL
{
    [Serializable]
    public class Order : IDataModel
    {
        private int m_OrderID;
        public int OrderID
        {
            get { return m_OrderID; }
            set { m_OrderID = value; }
        }
        private string m_CustomerID;
        public string CustomerID
        {
            get { return m_CustomerID; }
            set { m_CustomerID = value; }
        }
        private int m_EmployeeID;
        public int EmployeeID
        {
            get { return m_EmployeeID; }
            set { m_EmployeeID = value; }
        }
        private DateTime m_OrderDate;
        public DateTime OrderDate
        {
            get { return m_OrderDate; }
            set { m_OrderDate = value; }
        }
        private decimal m_Freight;
        public decimal Freight
        {
            get { return m_Freight; }
            set { m_Freight = value; }
        }
        private string m_ShipName;
        public string ShipName
        {
            get { return m_ShipName; }
            set { m_ShipName = value; }
        }
        private string m_ShipAddress;
        public string ShipAddress
        {
            get { return m_ShipAddress; }
            set { m_ShipAddress = value; }
        }
    }

    [Serializable]
    public class Orders : DataModelList<Order>
    {
    }
}

 

写一个DAL

Code
using System;
using FaibClass.Data;
using FaibClass.Data.Configuration;

namespace FBS.Chance.DAL
{
    public class Test : MarshalByRefObject
    {
        public Orders GetOrders()
        {
            try{
                SqlServer sql = new SqlServer(new SysXmlConnectionConfig("wtcp.config").Read("//config/ConnectionString"));
                Orders list = new Orders();
                    sql.FillModelList(list, "select * from Orders");
                    sql.Dispose();
                    return list;
            }
            catch (Exception exp)
            {
            }
            return null;
        }
    }
}

 

现在，写一个Windows Service程序，OnStart和OnStop中加入以下代码：

Code
        protected override void OnStart(string[] args)
        {
            try
            {
                TcpChannel channel = new TcpChannel(8093);
                ChannelServices.RegisterChannel(channel, false);
                RemotingConfiguration.ApplicationName = "ChanceService";
                RemotingConfiguration.RegisterActivatedServiceType(typeof(Test));
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }

        protected override void OnStop()
        {
            foreach (IChannel chan in ChannelServices.RegisteredChannels)
            {
                if (chan.ChannelName == "tcp")
                {
                    TcpChannel tcpChannel = (TcpChannel)chan;
                    tcpChannel.StopListening(null);
                    ChannelServices.UnregisterChannel(tcpChannel);
                }
            }
        }

 

好了，服务的安装这里就不再说了，接下来写客户端程序：

Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using FBS.Chance.DAL;
using System.Runtime.Remoting.Activation;
using FaibClass.Data;

namespace FSB.Chance.Client
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Test test;

            DateTime d = DateTime.Now;
            string serverStr = "tcp://localhost:8093/ChanceService";
            object[] attrs = { new UrlAttribute(serverStr) };
            test = (Test)Activator.CreateInstance(typeof(Test), new object[] { }, attrs);
            Console.WriteLine(test.GetOrders().Count);
            Console.WriteLine(((TimeSpan)(DateTime.Now - d)).Milliseconds);
        }
    }
}